diff --git a/app/analysis/page.tsx b/app/analysis/page.tsx
index ac6f9b8..ae9a5cf 100644
--- a/app/analysis/page.tsx
+++ b/app/analysis/page.tsx
@@ -16,6 +16,7 @@ import {
 import {
   BrainCircuit,
   ChartNoAxesCombined,
+  NotebookTabs,
   NotebookPen,
   RefreshCcw,
   Search,
@@ -29,6 +30,7 @@ import { Input } from '@/components/ui/input';
 import { Panel } from '@/components/ui/panel';
 import { useAuthGuard } from '@/hooks/use-auth-guard';
 import { useLinkPrefetch } from '@/hooks/use-link-prefetch';
+import { buildGraphingHref } from '@/lib/graphing/catalog';
 import {
   createResearchJournalEntry,
   deleteResearchJournalEntry,
@@ -407,6 +409,14 @@ function AnalysisPageContent() {
               >
                 Open filing stream
               </Link>
+              <Link
+                href={buildGraphingHref(analysis.company.ticker)}
+                onMouseEnter={() => prefetchResearchTicker(analysis.company.ticker)}
+                onFocus={() => prefetchResearchTicker(analysis.company.ticker)}
+                className="text-sm text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
+              >
+                Open graphing
+              </Link>
             </>
           ) : null}
         </form>
@@ -756,113 +766,70 @@ function AnalysisPageContent() {
         )}
       </Panel>
 
-      <div className="grid grid-cols-1 gap-6 xl:grid-cols-[1fr_1.3fr]">
+      <div className="grid grid-cols-1 gap-6 xl:grid-cols-[0.95fr_1.3fr]">
         <Panel
-          title={editingJournalId === null ? 'Research Journal' : 'Edit Journal Entry'}
-          subtitle="Private markdown notes for this company. Linked filing notes update the coverage review timestamp."
+          title="Research Summary"
+          subtitle="The full thesis workflow now lives in the dedicated Research workspace."
+          actions={(
+            <Link
+              href={`/research?ticker=${encodeURIComponent(activeTicker)}`}
+              onMouseEnter={() => prefetchResearchTicker(activeTicker)}
+              onFocus={() => prefetchResearchTicker(activeTicker)}
+              className="inline-flex items-center gap-2 rounded-lg border border-[color:var(--line-weak)] px-3 py-2 text-xs uppercase tracking-[0.12em] text-[color:var(--accent)] transition hover:border-[color:var(--line-strong)] hover:text-[color:var(--accent-strong)]"
+            >
+              <NotebookTabs className="size-4" />
+              Open research
+            </Link>
+          )}
         >
-          <form onSubmit={saveJournalEntry} className="space-y-3">
-            <div>
-              <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Title</label>
-              <Input
-                value={journalForm.title}
-                aria-label="Journal title"
-                onChange={(event) => setJournalForm((prev) => ({ ...prev, title: event.target.value }))}
-                placeholder="Investment thesis checkpoint, risk note, follow-up..."
-              />
+          <div className="space-y-4">
+            <div className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
+              <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Workspace focus</p>
+              <p className="mt-2 text-sm leading-6 text-[color:var(--terminal-bright)]">
+                Use the research surface to manage the typed library, attach evidence to memo sections, upload diligence files, and assemble the packet view for investor review.
+              </p>
             </div>
-            <div>
-              <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Linked Filing (optional)</label>
-              <Input
-                value={journalForm.accessionNumber}
-                aria-label="Journal linked filing"
-                onChange={(event) => setJournalForm((prev) => ({ ...prev, accessionNumber: event.target.value }))}
-                placeholder="0000000000-26-000001"
-              />
+            <div className="grid grid-cols-1 gap-3 md:grid-cols-2">
+              <div className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
+                <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Stored research entries</p>
+                <p className="mt-2 text-2xl font-semibold text-[color:var(--terminal-bright)]">{journalEntries.length}</p>
+              </div>
+              <div className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
+                <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Latest update</p>
+                <p className="mt-2 text-sm text-[color:var(--terminal-bright)]">{journalEntries[0] ? formatDateTime(journalEntries[0].updated_at) : 'No research activity yet'}</p>
+              </div>
             </div>
-            <div>
-              <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Body</label>
-              <textarea
-                value={journalForm.bodyMarkdown}
-                aria-label="Journal body"
-                onChange={(event) => setJournalForm((prev) => ({ ...prev, bodyMarkdown: event.target.value }))}
-                placeholder="Write your thesis update, questions, risks, and next steps..."
-                className="min-h-[220px] w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)] outline-none transition placeholder:text-[color:var(--terminal-muted)] focus:border-[color:var(--line-strong)] focus:shadow-[0_0_0_3px_rgba(0,255,180,0.14)]"
-                required
-              />
-            </div>
-            <div className="flex flex-wrap gap-2">
-              <Button type="submit">
-                <NotebookPen className="size-4" />
-                {editingJournalId === null ? 'Save note' : 'Update note'}
-              </Button>
-              {editingJournalId !== null ? (
-                <Button type="button" variant="ghost" onClick={resetJournalForm}>
-                  Cancel edit
-                </Button>
-              ) : null}
-            </div>
-          </form>
+          </div>
         </Panel>
 
-        <Panel title="Journal Timeline" subtitle={`${journalEntries.length} stored entries for ${activeTicker}.`}>
+        <Panel title="Recent Research Feed" subtitle={`Previewing the latest ${Math.min(journalEntries.length, 4)} research entries for ${activeTicker}.`}>
           {journalLoading ? (
-            <p className="text-sm text-[color:var(--terminal-muted)]">Loading journal entries...</p>
+            <p className="text-sm text-[color:var(--terminal-muted)]">Loading research entries...</p>
           ) : journalEntries.length === 0 ? (
-            <p className="text-sm text-[color:var(--terminal-muted)]">No journal notes yet. Start a thesis log or attach a filing note from the filings stream.</p>
+            <p className="text-sm text-[color:var(--terminal-muted)]">No research saved yet. Use AI memo saves from reports or open the Research workspace to start building the thesis.</p>
           ) : (
             <div className="space-y-3">
-              {journalEntries.map((entry) => {
-                const canEdit = entry.entry_type !== 'status_change';
-
-                return (
-                  <article key={entry.id} className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
-                    <div className="flex flex-wrap items-start justify-between gap-3">
-                      <div>
-                        <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">
-                          {entry.entry_type.replace('_', ' ')} · {formatDateTime(entry.updated_at)}
-                        </p>
-                        <h4 className="mt-1 text-sm font-semibold text-[color:var(--terminal-bright)]">
-                          {entry.title ?? 'Untitled entry'}
-                        </h4>
-                      </div>
-                      {entry.accession_number ? (
-                        <Link
-                          href={`/filings?ticker=${activeTicker}`}
-                          onMouseEnter={() => prefetchResearchTicker(activeTicker)}
-                          onFocus={() => prefetchResearchTicker(activeTicker)}
-                          className="text-xs uppercase tracking-[0.12em] text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
-                        >
-                          Open filing stream
-                        </Link>
-                      ) : null}
+              {journalEntries.slice(0, 4).map((entry) => (
+                <article key={entry.id} className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
+                  <div className="flex flex-wrap items-start justify-between gap-3">
+                    <div>
+                      <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">
+                        {entry.entry_type.replace('_', ' ')} · {formatDateTime(entry.updated_at)}
+                      </p>
+                      <h4 className="mt-1 text-sm font-semibold text-[color:var(--terminal-bright)]">{entry.title ?? 'Untitled entry'}</h4>
                     </div>
-                    <p className="mt-3 whitespace-pre-wrap text-sm leading-6 text-[color:var(--terminal-bright)]">{entry.body_markdown}</p>
-                    {canEdit ? (
-                      <div className="mt-4 flex flex-wrap items-center gap-2">
-                        <Button
-                          variant="ghost"
-                          className="px-2 py-1 text-xs"
-                          onClick={() => beginEditJournalEntry(entry)}
-                        >
-                          <SquarePen className="size-3" />
-                          Edit
-                        </Button>
-                        <Button
-                          variant="danger"
-                          className="px-2 py-1 text-xs"
-                          onClick={() => {
-                            void removeJournalEntry(entry);
-                          }}
-                        >
-                          <Trash2 className="size-3" />
-                          Delete
-                        </Button>
-                      </div>
-                    ) : null}
-                  </article>
-                );
-              })}
+                    <Link
+                      href={`/research?ticker=${encodeURIComponent(activeTicker)}`}
+                      onMouseEnter={() => prefetchResearchTicker(activeTicker)}
+                      onFocus={() => prefetchResearchTicker(activeTicker)}
+                      className="text-xs uppercase tracking-[0.12em] text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
+                    >
+                      Open workspace
+                    </Link>
+                  </div>
+                  <p className="mt-3 whitespace-pre-wrap text-sm leading-6 text-[color:var(--terminal-bright)]">{entry.body_markdown}</p>
+                </article>
+              ))}
             </div>
           )}
         </Panel>
@@ -871,7 +838,7 @@ function AnalysisPageContent() {
       <Panel>
         <div className="flex items-center gap-2 text-xs uppercase tracking-[0.24em] text-[color:var(--terminal-muted)]">
           <ChartNoAxesCombined className="size-4" />
-          Analysis scope: price + filings + ai synthesis + research journal
+          Analysis scope: price + filings + ai synthesis + research workspace
         </div>
       </Panel>
     </AppShell>
diff --git a/app/analysis/reports/[ticker]/[accessionNumber]/page.tsx b/app/analysis/reports/[ticker]/[accessionNumber]/page.tsx
index 7a3ca51..c2c64b5 100644
--- a/app/analysis/reports/[ticker]/[accessionNumber]/page.tsx
+++ b/app/analysis/reports/[ticker]/[accessionNumber]/page.tsx
@@ -14,7 +14,7 @@ import { aiReportQueryOptions } from '@/lib/query/options';
 import type { CompanyAiReportDetail } from '@/lib/types';
 import { Button } from '@/components/ui/button';
 import { Panel } from '@/components/ui/panel';
-import { createResearchJournalEntry } from '@/lib/api';
+import { createResearchArtifact } from '@/lib/api';
 
 function formatFilingDate(value: string) {
   const date = new Date(value);
@@ -87,6 +87,7 @@ export default function AnalysisReportPage() {
 
   const resolvedTicker = report?.ticker ?? tickerFromRoute;
   const analysisHref = resolvedTicker ? `/analysis?ticker=${encodeURIComponent(resolvedTicker)}` : '/analysis';
+  const researchHref = resolvedTicker ? `/research?ticker=${encodeURIComponent(resolvedTicker)}` : '/research';
   const filingsHref = resolvedTicker ? `/filings?ticker=${encodeURIComponent(resolvedTicker)}` : '/filings';
 
   return (
@@ -135,6 +136,15 @@ export default function AnalysisReportPage() {
             <ArrowLeft className="size-3" />
             Back to filings
           </Link>
+          <Link
+            href={researchHref}
+            onMouseEnter={() => prefetchResearchTicker(resolvedTicker)}
+            onFocus={() => prefetchResearchTicker(resolvedTicker)}
+            className="inline-flex items-center gap-1 text-xs uppercase tracking-[0.12em] text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
+          >
+            <ArrowLeft className="size-3" />
+            Open research
+          </Link>
         </div>
       </Panel>
 
@@ -193,11 +203,14 @@ export default function AnalysisReportPage() {
                   setJournalNotice(null);
 
                   try {
-                    await createResearchJournalEntry({
+                    await createResearchArtifact({
                       ticker: report.ticker,
+                      kind: 'ai_report',
+                      source: 'system',
+                      subtype: 'filing_analysis',
                       accessionNumber: report.accessionNumber,
-                      entryType: 'filing_note',
                       title: `${report.filingType} AI memo`,
+                      summary: report.summary,
                       bodyMarkdown: [
                         `Stored AI memo for ${report.companyName} (${report.ticker}).`,
                         `Accession: ${report.accessionNumber}`,
@@ -205,19 +218,21 @@ export default function AnalysisReportPage() {
                         report.summary
                       ].join('\n')
                     });
+                    void queryClient.invalidateQueries({ queryKey: queryKeys.researchWorkspace(report.ticker) });
+                    void queryClient.invalidateQueries({ queryKey: queryKeys.researchPacket(report.ticker) });
                     void queryClient.invalidateQueries({ queryKey: queryKeys.researchJournal(report.ticker) });
                     void queryClient.invalidateQueries({ queryKey: queryKeys.companyAnalysis(report.ticker) });
                     void queryClient.invalidateQueries({ queryKey: queryKeys.watchlist() });
-                    setJournalNotice('Saved to the company research journal.');
+                    setJournalNotice('Saved to the company research library.');
                   } catch (err) {
-                    setError(err instanceof Error ? err.message : 'Unable to save report to journal');
+                    setError(err instanceof Error ? err.message : 'Unable to save report to library');
                   } finally {
                     setSavingToJournal(false);
                   }
                 }}
               >
                 <NotebookPen className="size-4" />
-                {savingToJournal ? 'Saving...' : 'Add to journal'}
+                {savingToJournal ? 'Saving...' : 'Save to library'}
               </Button>
             </div>
             <p className="whitespace-pre-wrap text-sm leading-7 text-[color:var(--terminal-bright)]">
diff --git a/app/api/[[...slugs]]/route.ts b/app/api/[[...slugs]]/route.ts
index 462b38a..70c07e9 100644
--- a/app/api/[[...slugs]]/route.ts
+++ b/app/api/[[...slugs]]/route.ts
@@ -1,8 +1,25 @@
 import { app } from '@/lib/server/api/app';
 
-export const GET = app.fetch;
-export const POST = app.fetch;
-export const PATCH = app.fetch;
-export const PUT = app.fetch;
-export const DELETE = app.fetch;
-export const OPTIONS = app.fetch;
+export async function GET(request: Request) {
+  return await app.fetch(request);
+}
+
+export async function POST(request: Request) {
+  return await app.fetch(request);
+}
+
+export async function PATCH(request: Request) {
+  return await app.fetch(request);
+}
+
+export async function PUT(request: Request) {
+  return await app.fetch(request);
+}
+
+export async function DELETE(request: Request) {
+  return await app.fetch(request);
+}
+
+export async function OPTIONS(request: Request) {
+  return await app.fetch(request);
+}
diff --git a/app/filings/page.tsx b/app/filings/page.tsx
index fa75ddb..fe01512 100644
--- a/app/filings/page.tsx
+++ b/app/filings/page.tsx
@@ -14,7 +14,7 @@ import { Input } from '@/components/ui/input';
 import { useAuthGuard } from '@/hooks/use-auth-guard';
 import { useLinkPrefetch } from '@/hooks/use-link-prefetch';
 import {
-  createResearchJournalEntry,
+  createResearchArtifact,
   queueFilingAnalysis,
   queueFilingSync
 } from '@/lib/api';
@@ -202,27 +202,39 @@ function FilingsPageContent() {
     }
   };
 
-  const addToJournal = async (filing: Filing) => {
+  const saveToLibrary = async (filing: Filing) => {
     try {
-      await createResearchJournalEntry({
+      await createResearchArtifact({
         ticker: filing.ticker,
+        kind: 'filing',
+        source: 'system',
+        subtype: 'filing_snapshot',
         accessionNumber: filing.accession_number,
-        entryType: 'filing_note',
-        title: `${filing.filing_type} filing note`,
+        title: `${filing.filing_type} filing snapshot`,
+        summary: filing.analysis?.text ?? filing.analysis?.legacyInsights ?? `Captured filing ${filing.accession_number}.`,
         bodyMarkdown: [
           `Captured filing note for ${filing.company_name} (${filing.ticker}).`,
           `Filed: ${formatFilingDate(filing.filing_date)}`,
           `Accession: ${filing.accession_number}`,
           '',
           filing.analysis?.text ?? filing.analysis?.legacyInsights ?? 'Follow up on this filing from the stream.'
-        ].join('\n')
+        ].join('\n'),
+        metadata: {
+          filingType: filing.filing_type,
+          filingDate: filing.filing_date,
+          filingUrl: filing.filing_url,
+          submissionUrl: filing.submission_url ?? null,
+          primaryDocument: filing.primary_document ?? null
+        }
       });
+      void queryClient.invalidateQueries({ queryKey: queryKeys.researchWorkspace(filing.ticker) });
+      void queryClient.invalidateQueries({ queryKey: queryKeys.researchPacket(filing.ticker) });
       void queryClient.invalidateQueries({ queryKey: queryKeys.researchJournal(filing.ticker) });
       void queryClient.invalidateQueries({ queryKey: queryKeys.companyAnalysis(filing.ticker) });
       void queryClient.invalidateQueries({ queryKey: queryKeys.watchlist() });
-      setActionNotice(`Saved ${filing.accession_number} to the ${filing.ticker} journal.`);
+      setActionNotice(`Saved ${filing.accession_number} to the ${filing.ticker} research library.`);
     } catch (err) {
-      setError(err instanceof Error ? err.message : 'Failed to add filing to journal');
+      setError(err instanceof Error ? err.message : 'Failed to save filing to library');
     }
   };
 
@@ -411,11 +423,11 @@ function FilingsPageContent() {
                       </Button>
                       <Button
                         variant="ghost"
-                        onClick={() => void addToJournal(filing)}
+                        onClick={() => void saveToLibrary(filing)}
                         className="px-2 py-1 text-xs"
                       >
                         <NotebookPen className="size-3" />
-                        Add to journal
+                        Save to library
                       </Button>
                       {hasAnalysis ? (
                         <Link
@@ -489,7 +501,7 @@ function FilingsPageContent() {
                             </Button>
                             <Button
                               variant="ghost"
-                              onClick={() => void addToJournal(filing)}
+                              onClick={() => void saveToLibrary(filing)}
                               className="px-2 py-1 text-xs"
                             >
                               <NotebookPen className="size-3" />
diff --git a/app/financials/page.tsx b/app/financials/page.tsx
index c209a93..2c5a38f 100644
--- a/app/financials/page.tsx
+++ b/app/financials/page.tsx
@@ -40,6 +40,7 @@ import {
   formatPercent,
   type NumberScaleUnit
 } from '@/lib/format';
+import { buildGraphingHref } from '@/lib/graphing/catalog';
 import { queryKeys } from '@/lib/query/keys';
 import { companyFinancialStatementsQueryOptions } from '@/lib/query/options';
 import type {
@@ -630,14 +631,24 @@ function FinancialsPageContent() {
             Load Financials
           </Button>
           {financials ? (
-            <Link
-              href={`/analysis?ticker=${financials.company.ticker}`}
-              onMouseEnter={() => prefetchResearchTicker(financials.company.ticker)}
-              onFocus={() => prefetchResearchTicker(financials.company.ticker)}
-              className="text-sm text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
-            >
-              Open analysis
-            </Link>
+            <>
+              <Link
+                href={`/analysis?ticker=${financials.company.ticker}`}
+                onMouseEnter={() => prefetchResearchTicker(financials.company.ticker)}
+                onFocus={() => prefetchResearchTicker(financials.company.ticker)}
+                className="text-sm text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
+              >
+                Open analysis
+              </Link>
+              <Link
+                href={buildGraphingHref(financials.company.ticker)}
+                onMouseEnter={() => prefetchResearchTicker(financials.company.ticker)}
+                onFocus={() => prefetchResearchTicker(financials.company.ticker)}
+                className="text-sm text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
+              >
+                Open graphing
+              </Link>
+            </>
           ) : null}
         </form>
       </Panel>
diff --git a/app/graphing/page.tsx b/app/graphing/page.tsx
new file mode 100644
index 0000000..5819bb6
--- /dev/null
+++ b/app/graphing/page.tsx
@@ -0,0 +1,664 @@
+'use client';
+
+import { useQueryClient } from '@tanstack/react-query';
+import { format } from 'date-fns';
+import { Bar, BarChart, CartesianGrid, Line, LineChart, ResponsiveContainer, Tooltip, XAxis, YAxis } from 'recharts';
+import Link from 'next/link';
+import { Suspense, useCallback, useEffect, useMemo, useState } from 'react';
+import { useRouter, useSearchParams } from 'next/navigation';
+import { BarChart3, RefreshCcw, Search, X } from 'lucide-react';
+import { AppShell } from '@/components/shell/app-shell';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Panel } from '@/components/ui/panel';
+import { useAuthGuard } from '@/hooks/use-auth-guard';
+import { useLinkPrefetch } from '@/hooks/use-link-prefetch';
+import {
+  GRAPH_CADENCE_OPTIONS,
+  GRAPH_CHART_OPTIONS,
+  GRAPH_SCALE_OPTIONS,
+  GRAPH_SURFACE_LABELS,
+  buildGraphingHref,
+  getGraphMetricDefinition,
+  metricsForSurfaceAndCadence,
+  normalizeGraphTickers,
+  parseGraphingParams,
+  resolveGraphMetric,
+  serializeGraphingParams,
+  type GraphChartKind,
+  type GraphMetricDefinition,
+  type GraphingUrlState
+} from '@/lib/graphing/catalog';
+import {
+  buildGraphingComparisonData,
+  type GraphingChartDatum,
+  type GraphingFetchResult,
+  type GraphingLatestValueRow,
+  type GraphingSeriesPoint
+} from '@/lib/graphing/series';
+import { ApiError } from '@/lib/api';
+import {
+  formatCurrencyByScale,
+  formatPercent,
+  type NumberScaleUnit
+} from '@/lib/format';
+import type {
+  FinancialCadence,
+  FinancialUnit
+} from '@/lib/types';
+import { companyFinancialStatementsQueryOptions } from '@/lib/query/options';
+import { cn } from '@/lib/utils';
+
+const CHART_COLORS = ['#68ffd5', '#5fd3ff', '#ffd08a', '#ff8a8a', '#c39bff'] as const;
+const CHART_MUTED = '#b4ced9';
+const CHART_GRID = 'rgba(126, 217, 255, 0.24)';
+const CHART_TOOLTIP_BG = 'rgba(6, 17, 24, 0.95)';
+const CHART_TOOLTIP_BORDER = 'rgba(123, 255, 217, 0.45)';
+
+type TooltipEntry = {
+  dataKey?: string | number;
+  color?: string;
+  value?: number | string | null;
+  payload?: GraphingChartDatum;
+};
+
+function formatLongDate(value: string | null) {
+  if (!value) {
+    return 'n/a';
+  }
+
+  const parsed = new Date(value);
+  if (Number.isNaN(parsed.getTime())) {
+    return 'n/a';
+  }
+
+  return format(parsed, 'MMM dd, yyyy');
+}
+
+function formatShortDate(value: string) {
+  const parsed = new Date(value);
+  if (Number.isNaN(parsed.getTime())) {
+    return value;
+  }
+
+  return format(parsed, 'MMM yyyy');
+}
+
+function formatMetricValue(
+  value: number | null | undefined,
+  unit: FinancialUnit,
+  scale: NumberScaleUnit
+) {
+  if (value === null || value === undefined) {
+    return 'n/a';
+  }
+
+  switch (unit) {
+    case 'currency':
+      return formatCurrencyByScale(value, scale);
+    case 'percent':
+      return formatPercent(value * 100);
+    case 'ratio':
+      return `${value.toFixed(2)}x`;
+    case 'shares':
+    case 'count':
+      return new Intl.NumberFormat('en-US', { notation: 'compact', maximumFractionDigits: 2 }).format(value);
+    default:
+      return String(value);
+  }
+}
+
+function formatChangeValue(
+  value: number | null,
+  unit: FinancialUnit,
+  scale: NumberScaleUnit
+) {
+  if (value === null) {
+    return 'n/a';
+  }
+
+  if (unit === 'percent') {
+    const signed = value >= 0 ? '+' : '';
+    return `${signed}${formatPercent(value * 100)}`;
+  }
+
+  if (unit === 'ratio') {
+    const signed = value >= 0 ? '+' : '';
+    return `${signed}${value.toFixed(2)}x`;
+  }
+
+  if (unit === 'currency') {
+    const formatted = formatCurrencyByScale(Math.abs(value), scale);
+    return value >= 0 ? `+${formatted}` : `-${formatted}`;
+  }
+
+  const formatted = new Intl.NumberFormat('en-US', { notation: 'compact', maximumFractionDigits: 2 }).format(Math.abs(value));
+  return value >= 0 ? `+${formatted}` : `-${formatted}`;
+}
+
+function tickerPillClass(disabled?: boolean) {
+  return cn(
+    'inline-flex items-center gap-2 rounded-full border px-3 py-1 text-xs',
+    disabled
+      ? 'border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] text-[color:var(--terminal-muted)]'
+      : 'border-[color:var(--line-strong)] bg-[color:var(--panel-bright)] text-[color:var(--terminal-bright)]'
+  );
+}
+
+function ControlSection<T extends string>(props: {
+  label: string;
+  value: T;
+  options: Array<{ value: T; label: string }>;
+  onChange: (value: T) => void;
+  ariaLabel: string;
+}) {
+  return (
+    <div className="space-y-2">
+      <p className="panel-heading text-[11px] uppercase tracking-[0.18em] text-[color:var(--terminal-muted)]">{props.label}</p>
+      <div className="flex flex-wrap gap-2">
+        {props.options.map((option) => (
+          <Button
+            key={option.value}
+            type="button"
+            aria-label={`${props.ariaLabel} ${option.label}`}
+            variant={option.value === props.value ? 'primary' : 'ghost'}
+            className="px-3 py-1.5 text-xs"
+            onClick={() => props.onChange(option.value)}
+          >
+            {option.label}
+          </Button>
+        ))}
+      </div>
+    </div>
+  );
+}
+
+function ComparisonTooltip(props: {
+  active?: boolean;
+  payload?: TooltipEntry[];
+  metric: GraphMetricDefinition;
+  scale: NumberScaleUnit;
+}) {
+  if (!props.active || !props.payload || props.payload.length === 0) {
+    return null;
+  }
+
+  const datum = props.payload[0]?.payload;
+  if (!datum) {
+    return null;
+  }
+
+  const entries = props.payload
+    .filter((entry) => typeof entry.dataKey === 'string')
+    .map((entry) => {
+      const ticker = entry.dataKey as string;
+      const meta = datum[`meta__${ticker}`] as GraphingSeriesPoint | undefined;
+
+      return {
+        ticker,
+        color: entry.color ?? CHART_MUTED,
+        value: typeof entry.value === 'number' ? entry.value : null,
+        meta
+      };
+    });
+
+  return (
+    <div
+      className="min-w-[220px] rounded-xl border px-3 py-3 text-sm shadow-[0_16px_40px_rgba(0,0,0,0.34)]"
+      style={{
+        backgroundColor: CHART_TOOLTIP_BG,
+        borderColor: CHART_TOOLTIP_BORDER
+      }}
+    >
+      <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">
+        {formatLongDate(entries[0]?.meta?.dateKey ?? null)}
+      </p>
+      <div className="mt-3 space-y-2">
+        {entries.map((entry) => (
+          <div key={entry.ticker} className="rounded-lg border border-[color:var(--line-weak)] bg-[color:rgba(4,16,24,0.72)] px-2 py-2">
+            <div className="flex items-center justify-between gap-3">
+              <div className="flex items-center gap-2">
+                <span className="size-2 rounded-full" style={{ backgroundColor: entry.color }} aria-hidden="true" />
+                <span className="font-medium text-[color:var(--terminal-bright)]">{entry.ticker}</span>
+              </div>
+              <span className="text-[color:var(--terminal-bright)]">
+                {formatMetricValue(entry.value, props.metric.unit, props.scale)}
+              </span>
+            </div>
+            {entry.meta ? (
+              <p className="mt-1 text-xs text-[color:var(--terminal-muted)]">
+                {entry.meta.filingType} · {entry.meta.periodLabel}
+              </p>
+            ) : null}
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}
+
+export default function GraphingPage() {
+  return (
+    <Suspense fallback={<div className="flex min-h-screen items-center justify-center text-sm text-[color:var(--terminal-muted)]">Loading graphing desk...</div>}>
+      <GraphingPageContent />
+    </Suspense>
+  );
+}
+
+function GraphingPageContent() {
+  const { isPending, isAuthenticated } = useAuthGuard();
+  const searchParams = useSearchParams();
+  const router = useRouter();
+  const queryClient = useQueryClient();
+  const { prefetchResearchTicker } = useLinkPrefetch();
+
+  const graphState = useMemo(() => parseGraphingParams(searchParams), [searchParams]);
+  const canonicalQuery = useMemo(() => serializeGraphingParams(graphState), [graphState]);
+  const currentQuery = searchParams.toString();
+
+  const [tickerInput, setTickerInput] = useState(graphState.tickers.join(', '));
+  const [results, setResults] = useState<GraphingFetchResult[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [refreshNonce, setRefreshNonce] = useState(0);
+
+  useEffect(() => {
+    setTickerInput(graphState.tickers.join(', '));
+  }, [graphState.tickers]);
+
+  useEffect(() => {
+    if (currentQuery !== canonicalQuery) {
+      router.replace(`/graphing?${canonicalQuery}`, { scroll: false });
+    }
+  }, [canonicalQuery, currentQuery, router]);
+
+  const replaceGraphState = useCallback((patch: Partial<GraphingUrlState>) => {
+    const nextSurface = patch.surface ?? graphState.surface;
+    const nextCadence = patch.cadence ?? graphState.cadence;
+    const nextTickers = patch.tickers && patch.tickers.length > 0 ? patch.tickers : graphState.tickers;
+    const nextMetric = resolveGraphMetric(
+      nextSurface,
+      nextCadence,
+      patch.metric ?? graphState.metric
+    );
+
+    const nextState: GraphingUrlState = {
+      tickers: nextTickers,
+      surface: nextSurface,
+      cadence: nextCadence,
+      metric: nextMetric,
+      chart: patch.chart ?? graphState.chart,
+      scale: patch.scale ?? graphState.scale
+    };
+
+    router.replace(`/graphing?${serializeGraphingParams(nextState)}`, { scroll: false });
+  }, [graphState, router]);
+
+  useEffect(() => {
+    if (isPending || !isAuthenticated) {
+      return;
+    }
+
+    let cancelled = false;
+
+    async function loadComparisonSet() {
+      setLoading(true);
+
+      const settled = await Promise.allSettled(graphState.tickers.map(async (ticker) => {
+        const response = await queryClient.ensureQueryData(companyFinancialStatementsQueryOptions({
+          ticker,
+          surfaceKind: graphState.surface,
+          cadence: graphState.cadence,
+          includeDimensions: false,
+          includeFacts: false,
+          limit: 16
+        }));
+
+        return response.financials;
+      }));
+
+      if (cancelled) {
+        return;
+      }
+
+      setResults(settled.map((entry, index) => {
+        const ticker = graphState.tickers[index] ?? `ticker-${index + 1}`;
+
+        if (entry.status === 'fulfilled') {
+          return {
+            ticker,
+            financials: entry.value
+          } satisfies GraphingFetchResult;
+        }
+
+        const reason = entry.reason instanceof ApiError
+          ? entry.reason.message
+          : entry.reason instanceof Error
+            ? entry.reason.message
+            : 'Unable to load financial history';
+
+        return {
+          ticker,
+          error: reason
+        } satisfies GraphingFetchResult;
+      }));
+      setLoading(false);
+    }
+
+    void loadComparisonSet();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [graphState, isAuthenticated, isPending, queryClient, refreshNonce]);
+
+  const metricOptions = useMemo(() => metricsForSurfaceAndCadence(graphState.surface, graphState.cadence), [graphState.cadence, graphState.surface]);
+  const selectedMetric = useMemo(
+    () => getGraphMetricDefinition(graphState.surface, graphState.cadence, graphState.metric),
+    [graphState.cadence, graphState.metric, graphState.surface]
+  );
+  const comparison = useMemo(() => buildGraphingComparisonData({
+    results,
+    surface: graphState.surface,
+    metric: graphState.metric
+  }), [graphState.metric, graphState.surface, results]);
+
+  const hasCurrencyScale = selectedMetric?.unit === 'currency';
+
+  if (isPending || !isAuthenticated) {
+    return <div className="flex min-h-screen items-center justify-center text-sm text-[color:var(--terminal-muted)]">Loading graphing desk...</div>;
+  }
+
+  return (
+    <AppShell
+      title="Graphing"
+      subtitle="Compare one normalized filing metric across multiple companies with shareable chart state."
+      activeTicker={graphState.tickers[0] ?? null}
+      actions={(
+        <div className="flex flex-wrap items-center gap-2">
+          <Button
+            variant="secondary"
+            onClick={() => setRefreshNonce((current) => current + 1)}
+          >
+            <RefreshCcw className="size-4" />
+            Refresh
+          </Button>
+          <Button
+            variant="secondary"
+            onClick={() => replaceGraphState(parseGraphingParams(new URLSearchParams()))}
+          >
+            <BarChart3 className="size-4" />
+            Reset View
+          </Button>
+        </div>
+      )}
+    >
+      <Panel title="Compare Set" subtitle="Enter up to five tickers. Duplicates are removed and the first ticker anchors research context.">
+        <form
+          className="flex flex-col gap-4"
+          onSubmit={(event) => {
+            event.preventDefault();
+            const nextTickers = normalizeGraphTickers(tickerInput);
+            replaceGraphState({ tickers: nextTickers.length > 0 ? nextTickers : [...graphState.tickers] });
+          }}
+        >
+          <div className="flex flex-wrap items-center gap-3">
+            <Input
+              aria-label="Compare tickers"
+              value={tickerInput}
+              onChange={(event) => setTickerInput(event.target.value.toUpperCase())}
+              placeholder="MSFT, AAPL, NVDA"
+              className="min-w-[260px] flex-1"
+            />
+            <Button type="submit">
+              <Search className="size-4" />
+              Update Compare Set
+            </Button>
+            <Link
+              href={buildGraphingHref(graphState.tickers[0] ?? null)}
+              onMouseEnter={() => {
+                if (graphState.tickers[0]) {
+                  prefetchResearchTicker(graphState.tickers[0]);
+                }
+              }}
+              onFocus={() => {
+                if (graphState.tickers[0]) {
+                  prefetchResearchTicker(graphState.tickers[0]);
+                }
+              }}
+              className="text-sm text-[color:var(--accent)] hover:text-[color:var(--accent-strong)]"
+            >
+              Open canonical graphing URL
+            </Link>
+          </div>
+          <div className="flex flex-wrap gap-2">
+            {graphState.tickers.map((ticker, index) => (
+              <span key={ticker} className={tickerPillClass(index === 0)}>
+                {ticker}
+                <button
+                  type="button"
+                  aria-label={`Remove ${ticker}`}
+                  disabled={graphState.tickers.length === 1}
+                  className="rounded-full p-0.5 text-[color:var(--terminal-muted)] transition hover:text-[color:var(--terminal-bright)] disabled:cursor-not-allowed disabled:opacity-40"
+                  onClick={() => {
+                    const nextTickers = graphState.tickers.filter((entry) => entry !== ticker);
+                    if (nextTickers.length > 0) {
+                      replaceGraphState({ tickers: nextTickers });
+                    }
+                  }}
+                >
+                  <X className="size-3" />
+                </button>
+              </span>
+            ))}
+          </div>
+        </form>
+      </Panel>
+
+      <Panel title="Chart Controls" subtitle="Surface, metric, cadence, chart style, and scale stay in the URL for deep-linking.">
+        <div className="grid gap-5 lg:grid-cols-[1.2fr_1fr]">
+          <div className="space-y-5">
+            <ControlSection
+              label="Surface"
+              ariaLabel="Graph surface"
+              value={graphState.surface}
+              options={Object.entries(GRAPH_SURFACE_LABELS).map(([value, label]) => ({ value: value as GraphingUrlState['surface'], label }))}
+              onChange={(value) => replaceGraphState({ surface: value })}
+            />
+            <ControlSection
+              label="Cadence"
+              ariaLabel="Graph cadence"
+              value={graphState.cadence}
+              options={GRAPH_CADENCE_OPTIONS}
+              onChange={(value) => replaceGraphState({ cadence: value as FinancialCadence })}
+            />
+            <ControlSection
+              label="Chart Type"
+              ariaLabel="Chart type"
+              value={graphState.chart}
+              options={GRAPH_CHART_OPTIONS}
+              onChange={(value) => replaceGraphState({ chart: value as GraphChartKind })}
+            />
+            {hasCurrencyScale ? (
+              <ControlSection
+                label="Scale"
+                ariaLabel="Value scale"
+                value={graphState.scale}
+                options={GRAPH_SCALE_OPTIONS}
+                onChange={(value) => replaceGraphState({ scale: value as NumberScaleUnit })}
+              />
+            ) : null}
+          </div>
+
+          <div className="space-y-2">
+            <p className="panel-heading text-[11px] uppercase tracking-[0.18em] text-[color:var(--terminal-muted)]">Metric</p>
+            <select
+              aria-label="Metric selector"
+              value={graphState.metric}
+              onChange={(event) => replaceGraphState({ metric: event.target.value })}
+              className="w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2.5 text-sm text-[color:var(--terminal-bright)] outline-none transition focus:border-[color:var(--line-strong)] focus:shadow-[0_0_0_3px_rgba(0,255,180,0.14)]"
+            >
+              {metricOptions.map((option) => (
+                <option key={option.key} value={option.key} className="bg-[#07161f]">
+                  {option.label}
+                </option>
+              ))}
+            </select>
+            {selectedMetric ? (
+              <div className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-3 text-sm text-[color:var(--terminal-muted)]">
+                <p className="text-[color:var(--terminal-bright)]">{selectedMetric.label}</p>
+                <p className="mt-1">
+                  {GRAPH_SURFACE_LABELS[selectedMetric.surface]} · {selectedMetric.category.replace(/_/g, ' ')} · unit {selectedMetric.unit}
+                </p>
+              </div>
+            ) : null}
+          </div>
+        </div>
+      </Panel>
+
+      <Panel title="Comparison Chart" subtitle="One metric, multiple companies, aligned by actual reported dates.">
+        {loading ? (
+          <p className="text-sm text-[color:var(--terminal-muted)]">Loading comparison chart...</p>
+        ) : !selectedMetric || !comparison.hasAnyData ? (
+          <div className="rounded-xl border border-dashed border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-4 py-6">
+            <p className="text-sm text-[color:var(--terminal-bright)]">No chart data available for the selected compare set.</p>
+            <p className="mt-2 text-sm text-[color:var(--terminal-muted)]">Try a different metric, cadence, or company basket.</p>
+          </div>
+        ) : (
+          <>
+            {comparison.hasPartialData ? (
+              <div className="mb-4 rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-3 text-sm text-[color:var(--terminal-muted)]">
+                Partial coverage detected. Some companies are missing values for this metric or failed to load, but the remaining series still render.
+              </div>
+            ) : null}
+            <div className="mb-4 flex flex-wrap gap-2">
+              {comparison.companies.map((company, index) => (
+                <span key={company.ticker} className={tickerPillClass(company.status !== 'ready')}>
+                  <span
+                    className="size-2 rounded-full"
+                    style={{ backgroundColor: CHART_COLORS[index % CHART_COLORS.length] }}
+                    aria-hidden="true"
+                  />
+                  {company.ticker}
+                  <span className="text-[color:var(--terminal-muted)]">{company.companyName}</span>
+                </span>
+              ))}
+            </div>
+            <div className="h-[360px]">
+              <ResponsiveContainer width="100%" height="100%">
+                {graphState.chart === 'line' ? (
+                  <LineChart data={comparison.chartData}>
+                    <CartesianGrid strokeDasharray="2 2" stroke={CHART_GRID} />
+                    <XAxis
+                      dataKey="dateKey"
+                      stroke={CHART_MUTED}
+                      fontSize={12}
+                      minTickGap={20}
+                      tickFormatter={(value: string) => formatShortDate(value)}
+                    />
+                    <YAxis
+                      stroke={CHART_MUTED}
+                      fontSize={12}
+                      tickFormatter={(value: number) => formatMetricValue(value, selectedMetric.unit, graphState.scale)}
+                    />
+                    <Tooltip content={<ComparisonTooltip metric={selectedMetric} scale={graphState.scale} />} />
+                    {comparison.companies.map((company, index) => (
+                      <Line
+                        key={company.ticker}
+                        type="monotone"
+                        dataKey={company.ticker}
+                        connectNulls={false}
+                        stroke={CHART_COLORS[index % CHART_COLORS.length]}
+                        strokeWidth={2.5}
+                        dot={false}
+                        name={company.ticker}
+                      />
+                    ))}
+                  </LineChart>
+                ) : (
+                  <BarChart data={comparison.chartData}>
+                    <CartesianGrid strokeDasharray="2 2" stroke={CHART_GRID} />
+                    <XAxis
+                      dataKey="dateKey"
+                      stroke={CHART_MUTED}
+                      fontSize={12}
+                      minTickGap={20}
+                      tickFormatter={(value: string) => formatShortDate(value)}
+                    />
+                    <YAxis
+                      stroke={CHART_MUTED}
+                      fontSize={12}
+                      tickFormatter={(value: number) => formatMetricValue(value, selectedMetric.unit, graphState.scale)}
+                    />
+                    <Tooltip content={<ComparisonTooltip metric={selectedMetric} scale={graphState.scale} />} />
+                    {comparison.companies.map((company, index) => (
+                      <Bar
+                        key={company.ticker}
+                        dataKey={company.ticker}
+                        fill={CHART_COLORS[index % CHART_COLORS.length]}
+                        radius={[6, 6, 0, 0]}
+                        name={company.ticker}
+                      />
+                    ))}
+                  </BarChart>
+                )}
+              </ResponsiveContainer>
+            </div>
+          </>
+        )}
+      </Panel>
+
+      <Panel title="Latest Values" subtitle="Most recent reported point per company, plus the prior point and one-step change.">
+        <div className="overflow-x-auto">
+          <table className="data-table min-w-[920px]">
+            <thead>
+              <tr>
+                <th>Company</th>
+                <th>Latest</th>
+                <th>Prior</th>
+                <th>Change</th>
+                <th>Period</th>
+                <th>Filing</th>
+                <th>Status</th>
+              </tr>
+            </thead>
+            <tbody>
+              {comparison.latestRows.map((row, index) => (
+                <tr key={row.ticker}>
+                  <td>
+                    <div className="flex flex-col gap-1">
+                      <div className="flex items-center gap-2">
+                        <span
+                          className="size-2 rounded-full"
+                          style={{ backgroundColor: CHART_COLORS[index % CHART_COLORS.length] }}
+                          aria-hidden="true"
+                        />
+                        <span>{row.ticker}</span>
+                      </div>
+                      <span className="text-xs text-[color:var(--terminal-muted)]">{row.companyName}</span>
+                    </div>
+                  </td>
+                  <td>{selectedMetric ? formatMetricValue(row.latestValue, selectedMetric.unit, graphState.scale) : 'n/a'}</td>
+                  <td>{selectedMetric ? formatMetricValue(row.priorValue, selectedMetric.unit, graphState.scale) : 'n/a'}</td>
+                  <td className={cn(row.changeValue !== null && row.changeValue >= 0 ? 'text-[color:var(--accent)]' : row.changeValue !== null ? 'text-[#ffb5b5]' : 'text-[color:var(--terminal-muted)]')}>
+                    {selectedMetric ? formatChangeValue(row.changeValue, selectedMetric.unit, graphState.scale) : 'n/a'}
+                  </td>
+                  <td>{formatLongDate(row.latestDateKey)} {row.latestPeriodLabel ? <span className="text-xs text-[color:var(--terminal-muted)]">· {row.latestPeriodLabel}</span> : null}</td>
+                  <td>{row.latestFilingType ?? 'n/a'}</td>
+                  <td>
+                    {row.status === 'ready' ? (
+                      <span className="text-[color:var(--accent)]">Ready</span>
+                    ) : row.status === 'no_metric_data' ? (
+                      <span className="text-[color:var(--terminal-muted)]">No metric data</span>
+                    ) : (
+                      <span className="text-[#ffb5b5]">{row.errorMessage ?? 'Load failed'}</span>
+                    )}
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      </Panel>
+    </AppShell>
+  );
+}
diff --git a/app/page.tsx b/app/page.tsx
index 0b94d73..ada3304 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -15,6 +15,7 @@ import {
   queuePortfolioInsights,
   queuePriceRefresh
 } from '@/lib/api';
+import { buildGraphingHref } from '@/lib/graphing/catalog';
 import type { PortfolioInsight, PortfolioSummary, Task } from '@/lib/types';
 import { formatCompactCurrency, formatCurrency, formatPercent } from '@/lib/format';
 import { queryKeys } from '@/lib/query/keys';
@@ -203,6 +204,10 @@ export default function CommandCenterPage() {
             <p className="panel-heading text-xs uppercase text-[color:var(--terminal-muted)]">Financials</p>
             <p className="mt-2 text-sm text-[color:var(--terminal-bright)]">Focus on multi-period filing metrics, margins, leverage, and balance sheet composition.</p>
           </Link>
+          <Link className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4 transition hover:border-[color:var(--line-strong)] hover:bg-[color:var(--panel-bright)]" href={buildGraphingHref()}>
+            <p className="panel-heading text-xs uppercase text-[color:var(--terminal-muted)]">Graphing</p>
+            <p className="mt-2 text-sm text-[color:var(--terminal-bright)]">Compare one normalized metric across multiple companies with shareable chart state.</p>
+          </Link>
           <Link
             className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4 transition hover:border-[color:var(--line-strong)] hover:bg-[color:var(--panel-bright)]"
             href="/filings"
diff --git a/app/research/page.tsx b/app/research/page.tsx
new file mode 100644
index 0000000..60dcead
--- /dev/null
+++ b/app/research/page.tsx
@@ -0,0 +1,831 @@
+'use client';
+
+import { Suspense, useDeferredValue, useEffect, useMemo, useState } from 'react';
+import { format } from 'date-fns';
+import { useQueryClient } from '@tanstack/react-query';
+import { BookOpenText, Download, FilePlus2, Filter, FolderUp, Link2, NotebookPen, Search, ShieldCheck, Sparkles, Trash2 } from 'lucide-react';
+import Link from 'next/link';
+import { useSearchParams } from 'next/navigation';
+import { AppShell } from '@/components/shell/app-shell';
+import { Panel } from '@/components/ui/panel';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { useAuthGuard } from '@/hooks/use-auth-guard';
+import { useLinkPrefetch } from '@/hooks/use-link-prefetch';
+import {
+  addResearchMemoEvidence,
+  createResearchArtifact,
+  deleteResearchArtifact,
+  deleteResearchMemoEvidence,
+  getResearchArtifactFileUrl,
+  updateResearchArtifact,
+  uploadResearchArtifact,
+  upsertResearchMemo
+} from '@/lib/api';
+import { queryKeys } from '@/lib/query/keys';
+import {
+  researchLibraryQueryOptions,
+  researchWorkspaceQueryOptions
+} from '@/lib/query/options';
+import type {
+  ResearchArtifact,
+  ResearchArtifactKind,
+  ResearchArtifactSource,
+  ResearchMemo,
+  ResearchMemoSection,
+  ResearchWorkspace
+} from '@/lib/types';
+
+const MEMO_SECTIONS: Array<{ value: ResearchMemoSection; label: string }> = [
+  { value: 'thesis', label: 'Thesis' },
+  { value: 'variant_view', label: 'Variant View' },
+  { value: 'catalysts', label: 'Catalysts' },
+  { value: 'risks', label: 'Risks' },
+  { value: 'disconfirming_evidence', label: 'Disconfirming Evidence' },
+  { value: 'next_actions', label: 'Next Actions' }
+];
+
+const KIND_OPTIONS: Array<{ value: '' | ResearchArtifactKind; label: string }> = [
+  { value: '', label: 'All artifacts' },
+  { value: 'note', label: 'Notes' },
+  { value: 'ai_report', label: 'AI memos' },
+  { value: 'filing', label: 'Filings' },
+  { value: 'upload', label: 'Uploads' },
+  { value: 'status_change', label: 'Status events' }
+];
+
+const SOURCE_OPTIONS: Array<{ value: '' | ResearchArtifactSource; label: string }> = [
+  { value: '', label: 'All sources' },
+  { value: 'user', label: 'User-authored' },
+  { value: 'system', label: 'System-generated' }
+];
+
+type NoteFormState = {
+  id: number | null;
+  title: string;
+  summary: string;
+  bodyMarkdown: string;
+  tags: string;
+};
+
+type MemoFormState = {
+  rating: string;
+  conviction: string;
+  timeHorizonMonths: string;
+  packetTitle: string;
+  packetSubtitle: string;
+  thesisMarkdown: string;
+  variantViewMarkdown: string;
+  catalystsMarkdown: string;
+  risksMarkdown: string;
+  disconfirmingEvidenceMarkdown: string;
+  nextActionsMarkdown: string;
+};
+
+const EMPTY_NOTE_FORM: NoteFormState = {
+  id: null,
+  title: '',
+  summary: '',
+  bodyMarkdown: '',
+  tags: ''
+};
+
+const EMPTY_MEMO_FORM: MemoFormState = {
+  rating: '',
+  conviction: '',
+  timeHorizonMonths: '',
+  packetTitle: '',
+  packetSubtitle: '',
+  thesisMarkdown: '',
+  variantViewMarkdown: '',
+  catalystsMarkdown: '',
+  risksMarkdown: '',
+  disconfirmingEvidenceMarkdown: '',
+  nextActionsMarkdown: ''
+};
+
+function parseTags(value: string) {
+  const unique = new Set<string>();
+
+  for (const segment of value.split(',')) {
+    const normalized = segment.trim();
+    if (!normalized) {
+      continue;
+    }
+
+    unique.add(normalized);
+  }
+
+  return [...unique];
+}
+
+function tagsToInput(tags: string[]) {
+  return tags.join(', ');
+}
+
+function formatTimestamp(value: string | null | undefined) {
+  if (!value) {
+    return 'n/a';
+  }
+
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return 'n/a';
+  }
+
+  return format(date, 'MMM dd, yyyy · HH:mm');
+}
+
+function toMemoForm(memo: ResearchMemo | null): MemoFormState {
+  if (!memo) {
+    return EMPTY_MEMO_FORM;
+  }
+
+  return {
+    rating: memo.rating ?? '',
+    conviction: memo.conviction ?? '',
+    timeHorizonMonths: memo.time_horizon_months ? String(memo.time_horizon_months) : '',
+    packetTitle: memo.packet_title ?? '',
+    packetSubtitle: memo.packet_subtitle ?? '',
+    thesisMarkdown: memo.thesis_markdown,
+    variantViewMarkdown: memo.variant_view_markdown,
+    catalystsMarkdown: memo.catalysts_markdown,
+    risksMarkdown: memo.risks_markdown,
+    disconfirmingEvidenceMarkdown: memo.disconfirming_evidence_markdown,
+    nextActionsMarkdown: memo.next_actions_markdown
+  };
+}
+
+function noteFormFromArtifact(artifact: ResearchArtifact): NoteFormState {
+  return {
+    id: artifact.id,
+    title: artifact.title ?? '',
+    summary: artifact.summary ?? '',
+    bodyMarkdown: artifact.body_markdown ?? '',
+    tags: tagsToInput(artifact.tags)
+  };
+}
+
+export default function ResearchPage() {
+  return (
+    <Suspense fallback={<div className="flex min-h-screen items-center justify-center text-sm text-[color:var(--terminal-muted)]">Loading research workspace...</div>}>
+      <ResearchPageContent />
+    </Suspense>
+  );
+}
+
+function ResearchPageContent() {
+  const { isPending, isAuthenticated } = useAuthGuard();
+  const searchParams = useSearchParams();
+  const queryClient = useQueryClient();
+  const { prefetchResearchTicker } = useLinkPrefetch();
+
+  const [workspace, setWorkspace] = useState<ResearchWorkspace | null>(null);
+  const [library, setLibrary] = useState<ResearchArtifact[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [notice, setNotice] = useState<string | null>(null);
+  const [noteForm, setNoteForm] = useState<NoteFormState>(EMPTY_NOTE_FORM);
+  const [memoForm, setMemoForm] = useState<MemoFormState>(EMPTY_MEMO_FORM);
+  const [searchInput, setSearchInput] = useState('');
+  const [kindFilter, setKindFilter] = useState<'' | ResearchArtifactKind>('');
+  const [sourceFilter, setSourceFilter] = useState<'' | ResearchArtifactSource>('');
+  const [tagFilter, setTagFilter] = useState('');
+  const [linkedOnly, setLinkedOnly] = useState(false);
+  const [attachSection, setAttachSection] = useState<ResearchMemoSection>('thesis');
+  const [uploadFile, setUploadFile] = useState<File | null>(null);
+  const [uploadTitle, setUploadTitle] = useState('');
+  const [uploadSummary, setUploadSummary] = useState('');
+  const [uploadTags, setUploadTags] = useState('');
+
+  const ticker = useMemo(() => searchParams.get('ticker')?.trim().toUpperCase() ?? '', [searchParams]);
+  const deferredSearch = useDeferredValue(searchInput);
+
+  const loadWorkspace = async (symbol: string) => {
+    if (!symbol) {
+      setWorkspace(null);
+      setLibrary([]);
+      setLoading(false);
+      return;
+    }
+
+    const options = researchWorkspaceQueryOptions(symbol);
+    if (!queryClient.getQueryData(options.queryKey)) {
+      setLoading(true);
+    }
+
+    try {
+      const response = await queryClient.ensureQueryData(options);
+      setWorkspace(response.workspace);
+      setLibrary(response.workspace.library);
+      setMemoForm(toMemoForm(response.workspace.memo));
+      setError(null);
+    } catch (err) {
+      setWorkspace(null);
+      setLibrary([]);
+      setError(err instanceof Error ? err.message : 'Unable to load research workspace');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const loadLibrary = async (symbol: string) => {
+    if (!symbol) {
+      return;
+    }
+
+    try {
+      const response = await queryClient.fetchQuery(researchLibraryQueryOptions({
+        ticker: symbol,
+        q: deferredSearch,
+        kind: kindFilter || undefined,
+        source: sourceFilter || undefined,
+        tag: tagFilter || undefined,
+        linkedToMemo: linkedOnly ? true : undefined,
+        limit: 100
+      }));
+      setLibrary(response.artifacts);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Unable to load filtered library');
+    }
+  };
+
+  const invalidateResearch = async (symbol: string) => {
+    await Promise.all([
+      queryClient.invalidateQueries({ queryKey: queryKeys.researchWorkspace(symbol) }),
+      queryClient.invalidateQueries({ queryKey: ['research', 'library', symbol] }),
+      queryClient.invalidateQueries({ queryKey: queryKeys.researchMemo(symbol) }),
+      queryClient.invalidateQueries({ queryKey: queryKeys.researchPacket(symbol) }),
+      queryClient.invalidateQueries({ queryKey: queryKeys.researchJournal(symbol) }),
+      queryClient.invalidateQueries({ queryKey: queryKeys.companyAnalysis(symbol) }),
+      queryClient.invalidateQueries({ queryKey: queryKeys.watchlist() })
+    ]);
+  };
+
+  useEffect(() => {
+    if (!isPending && isAuthenticated) {
+      void loadWorkspace(ticker);
+    }
+  }, [isPending, isAuthenticated, ticker]);
+
+  useEffect(() => {
+    if (!workspace) {
+      return;
+    }
+
+    void loadLibrary(workspace.ticker);
+  }, [workspace?.ticker, deferredSearch, kindFilter, sourceFilter, tagFilter, linkedOnly]);
+
+  if (isPending || !isAuthenticated) {
+    return <div className="flex min-h-screen items-center justify-center text-sm text-[color:var(--terminal-muted)]">Loading research workspace...</div>;
+  }
+
+  const saveNote = async () => {
+    if (!ticker) {
+      return;
+    }
+
+    try {
+      if (noteForm.id === null) {
+        await createResearchArtifact({
+          ticker,
+          kind: 'note',
+          source: 'user',
+          title: noteForm.title || undefined,
+          summary: noteForm.summary || undefined,
+          bodyMarkdown: noteForm.bodyMarkdown || undefined,
+          tags: parseTags(noteForm.tags)
+        });
+        setNotice('Saved note to the research library.');
+      } else {
+        await updateResearchArtifact(noteForm.id, {
+          title: noteForm.title || undefined,
+          summary: noteForm.summary || undefined,
+          bodyMarkdown: noteForm.bodyMarkdown || undefined,
+          tags: parseTags(noteForm.tags)
+        });
+        setNotice('Updated research note.');
+      }
+
+      setNoteForm(EMPTY_NOTE_FORM);
+      await invalidateResearch(ticker);
+      await loadWorkspace(ticker);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Unable to save note');
+    }
+  };
+
+  const saveMemo = async () => {
+    if (!ticker) {
+      return;
+    }
+
+    try {
+      await upsertResearchMemo({
+        ticker,
+        rating: memoForm.rating ? memoForm.rating as ResearchMemo['rating'] : null,
+        conviction: memoForm.conviction ? memoForm.conviction as ResearchMemo['conviction'] : null,
+        timeHorizonMonths: memoForm.timeHorizonMonths ? Number(memoForm.timeHorizonMonths) : null,
+        packetTitle: memoForm.packetTitle || undefined,
+        packetSubtitle: memoForm.packetSubtitle || undefined,
+        thesisMarkdown: memoForm.thesisMarkdown,
+        variantViewMarkdown: memoForm.variantViewMarkdown,
+        catalystsMarkdown: memoForm.catalystsMarkdown,
+        risksMarkdown: memoForm.risksMarkdown,
+        disconfirmingEvidenceMarkdown: memoForm.disconfirmingEvidenceMarkdown,
+        nextActionsMarkdown: memoForm.nextActionsMarkdown
+      });
+      setNotice('Saved investment memo.');
+      await invalidateResearch(ticker);
+      await loadWorkspace(ticker);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Unable to save investment memo');
+    }
+  };
+
+  const uploadFileToLibrary = async () => {
+    if (!ticker || !uploadFile) {
+      return;
+    }
+
+    try {
+      await uploadResearchArtifact({
+        ticker,
+        file: uploadFile,
+        title: uploadTitle || undefined,
+        summary: uploadSummary || undefined,
+        tags: parseTags(uploadTags)
+      });
+      setUploadFile(null);
+      setUploadTitle('');
+      setUploadSummary('');
+      setUploadTags('');
+      setNotice('Uploaded research file.');
+      await invalidateResearch(ticker);
+      await loadWorkspace(ticker);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Unable to upload research file');
+    }
+  };
+
+  const ensureMemo = async () => {
+    if (!ticker) {
+      throw new Error('Ticker is required');
+    }
+
+    if (workspace?.memo) {
+      return workspace.memo.id;
+    }
+
+    const response = await upsertResearchMemo({ ticker });
+    await invalidateResearch(ticker);
+    await loadWorkspace(ticker);
+    return response.memo.id;
+  };
+
+  const attachArtifact = async (artifact: ResearchArtifact) => {
+    try {
+      const memoId = await ensureMemo();
+      await addResearchMemoEvidence({
+        memoId,
+        artifactId: artifact.id,
+        section: attachSection
+      });
+      setNotice(`Attached evidence to ${MEMO_SECTIONS.find((item) => item.value === attachSection)?.label}.`);
+      await invalidateResearch(ticker);
+      await loadWorkspace(ticker);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Unable to attach evidence');
+    }
+  };
+
+  const availableTags = workspace?.availableTags ?? [];
+  const memoEvidenceCount = workspace?.packet.sections.reduce((sum, section) => sum + section.evidence.length, 0) ?? 0;
+
+  return (
+    <AppShell
+      title="Research"
+      subtitle="Build an investor-grade company dossier with evidence-linked memo sections, uploads, and a packet view."
+      activeTicker={ticker || null}
+      breadcrumbs={[
+        { label: 'Analysis', href: ticker ? `/analysis?ticker=${encodeURIComponent(ticker)}` : '/analysis' },
+        { label: 'Research' }
+      ]}
+      actions={(
+        <div className="flex flex-wrap gap-2">
+          <Button
+            variant="secondary"
+            onClick={() => {
+              void invalidateResearch(ticker);
+              void loadWorkspace(ticker);
+            }}
+          >
+            <Sparkles className="size-4" />
+            Refresh
+          </Button>
+          {ticker ? (
+            <Link
+              href={`/analysis?ticker=${encodeURIComponent(ticker)}`}
+              onMouseEnter={() => prefetchResearchTicker(ticker)}
+              onFocus={() => prefetchResearchTicker(ticker)}
+              className="inline-flex items-center gap-2 rounded-lg border border-[color:var(--line-weak)] px-3 py-2 text-sm text-[color:var(--accent)] transition hover:border-[color:var(--line-strong)] hover:text-[color:var(--accent-strong)]"
+            >
+              Open analysis
+            </Link>
+          ) : null}
+        </div>
+      )}
+    >
+      {!ticker ? (
+        <Panel title="Select a company" subtitle="Open this page with `?ticker=NVDA` or use the Coverage and Analysis surfaces to pivot into research.">
+          <p className="text-sm text-[color:var(--terminal-muted)]">This workspace is company-first by design and activates once a ticker is selected.</p>
+        </Panel>
+      ) : null}
+
+      {ticker && workspace ? (
+        <>
+          <Panel className="overflow-hidden border-[color:var(--line-strong)] bg-[linear-gradient(135deg,rgba(6,16,20,0.96),rgba(6,16,20,0.82)_45%,rgba(8,28,30,0.9))]">
+            <div className="grid gap-5 lg:grid-cols-[1.6fr_1fr]">
+              <div>
+                <p className="text-xs uppercase tracking-[0.22em] text-[color:var(--accent)]">Buy-Side Research Workspace</p>
+                <h2 className="mt-3 text-3xl font-semibold text-[color:var(--terminal-bright)]">{workspace.companyName ?? workspace.ticker}</h2>
+                <p className="mt-2 text-sm text-[color:var(--terminal-muted)]">
+                  {workspace.coverage?.status ? `Coverage: ${workspace.coverage.status}` : 'Not yet on the coverage board'} ·
+                  {' '}Last filing: {workspace.latestFilingDate ? formatTimestamp(workspace.latestFilingDate).split(' · ')[0] : 'n/a'} ·
+                  {' '}Private by default
+                </p>
+                <div className="mt-4 flex flex-wrap gap-2">
+                  {(workspace.coverage?.tags ?? []).map((tag) => (
+                    <span key={tag} className="rounded-full border border-[color:var(--line-weak)] bg-[rgba(255,255,255,0.02)] px-3 py-1 text-xs uppercase tracking-[0.14em] text-[color:var(--terminal-muted)]">
+                      {tag}
+                    </span>
+                  ))}
+                </div>
+              </div>
+              <div className="grid gap-3 sm:grid-cols-2 lg:grid-cols-1">
+                <div className="rounded-2xl border border-[color:var(--line-weak)] bg-[rgba(255,255,255,0.03)] p-4">
+                  <p className="text-xs uppercase tracking-[0.14em] text-[color:var(--terminal-muted)]">Memo posture</p>
+                  <p className="mt-2 text-lg font-semibold text-[color:var(--terminal-bright)]">
+                    {workspace.memo?.rating ? workspace.memo.rating.replace('_', ' ') : 'Unrated'}
+                  </p>
+                  <p className="mt-1 text-sm text-[color:var(--terminal-muted)]">
+                    Conviction: {workspace.memo?.conviction ?? 'unset'}
+                  </p>
+                </div>
+                <div className="rounded-2xl border border-[color:var(--line-weak)] bg-[rgba(255,255,255,0.03)] p-4">
+                  <p className="text-xs uppercase tracking-[0.14em] text-[color:var(--terminal-muted)]">Research depth</p>
+                  <p className="mt-2 text-lg font-semibold text-[color:var(--terminal-bright)]">{workspace.library.length} artifacts</p>
+                  <p className="mt-1 text-sm text-[color:var(--terminal-muted)]">{memoEvidenceCount} evidence links in the packet</p>
+                </div>
+              </div>
+            </div>
+          </Panel>
+
+          {notice ? (
+            <Panel className="border-[color:var(--line-strong)] bg-[color:var(--panel-soft)]">
+              <p className="text-sm text-[color:var(--accent)]">{notice}</p>
+            </Panel>
+          ) : null}
+
+          {error ? (
+            <Panel>
+              <p className="text-sm text-[#ffb5b5]">{error}</p>
+            </Panel>
+          ) : null}
+
+          {loading ? (
+            <Panel>
+              <p className="text-sm text-[color:var(--terminal-muted)]">Loading research workspace...</p>
+            </Panel>
+          ) : (
+            <>
+              <div className="grid gap-6 xl:grid-cols-[0.9fr_1.25fr_1.1fr]">
+                <Panel
+                  title="Library Filters"
+                  subtitle="Narrow the evidence set by structure, ownership, and memo linkage."
+                  actions={<Filter className="size-4 text-[color:var(--accent)]" />}
+                >
+                  <div className="space-y-3">
+                    <div>
+                      <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Search</label>
+                      <div className="relative">
+                        <Search className="pointer-events-none absolute left-3 top-1/2 size-4 -translate-y-1/2 text-[color:var(--terminal-muted)]" />
+                        <Input aria-label="Research search" className="pl-9" value={searchInput} onChange={(event) => setSearchInput(event.target.value)} placeholder="Keyword search research..." />
+                      </div>
+                    </div>
+                    <div>
+                      <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Artifact Type</label>
+                      <select aria-label="Artifact type filter" className="w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]" value={kindFilter} onChange={(event) => setKindFilter(event.target.value as '' | ResearchArtifactKind)}>
+                        {KIND_OPTIONS.map((option) => (
+                          <option key={option.label} value={option.value}>{option.label}</option>
+                        ))}
+                      </select>
+                    </div>
+                    <div>
+                      <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Source</label>
+                      <select aria-label="Artifact source filter" className="w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]" value={sourceFilter} onChange={(event) => setSourceFilter(event.target.value as '' | ResearchArtifactSource)}>
+                        {SOURCE_OPTIONS.map((option) => (
+                          <option key={option.label} value={option.value}>{option.label}</option>
+                        ))}
+                      </select>
+                    </div>
+                    <div>
+                      <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Tag</label>
+                      <select aria-label="Artifact tag filter" className="w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]" value={tagFilter} onChange={(event) => setTagFilter(event.target.value)}>
+                        <option value="">All tags</option>
+                        {availableTags.map((tag) => (
+                          <option key={tag} value={tag}>{tag}</option>
+                        ))}
+                      </select>
+                    </div>
+                    <label className="flex items-center gap-2 rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]">
+                      <input type="checkbox" checked={linkedOnly} onChange={(event) => setLinkedOnly(event.target.checked)} />
+                      Show memo-linked evidence only
+                    </label>
+                    <div className="rounded-2xl border border-[color:var(--line-weak)] bg-[rgba(255,255,255,0.02)] p-4">
+                      <div className="flex items-center gap-2 text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">
+                        <ShieldCheck className="size-4 text-[color:var(--accent)]" />
+                        Access Model
+                      </div>
+                      <p className="mt-3 text-sm text-[color:var(--terminal-muted)]">All research artifacts are private to the authenticated user in this release. The data model is prepared for workspace scopes later.</p>
+                    </div>
+                  </div>
+                </Panel>
+
+                <div className="space-y-6">
+                  <Panel
+                    title={noteForm.id === null ? 'Quick Note' : 'Edit Note'}
+                    subtitle="Capture thesis changes, diligence notes, and interpretation gaps directly into the library."
+                    actions={<NotebookPen className="size-4 text-[color:var(--accent)]" />}
+                  >
+                    <div className="space-y-3">
+                      <Input aria-label="Research note title" value={noteForm.title} onChange={(event) => setNoteForm((current) => ({ ...current, title: event.target.value }))} placeholder="Headline or checkpoint title" />
+                      <Input aria-label="Research note summary" value={noteForm.summary} onChange={(event) => setNoteForm((current) => ({ ...current, summary: event.target.value }))} placeholder="One-line summary for skimming and search" />
+                      <textarea
+                        aria-label="Research note body"
+                        value={noteForm.bodyMarkdown}
+                        onChange={(event) => setNoteForm((current) => ({ ...current, bodyMarkdown: event.target.value }))}
+                        placeholder="Write the actual research note, variant view, or diligence conclusion..."
+                        className="min-h-[160px] w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)] outline-none transition placeholder:text-[color:var(--terminal-muted)] focus:border-[color:var(--line-strong)] focus:shadow-[0_0_0_3px_rgba(0,255,180,0.14)]"
+                      />
+                      <Input aria-label="Research note tags" value={noteForm.tags} onChange={(event) => setNoteForm((current) => ({ ...current, tags: event.target.value }))} placeholder="Tags, comma-separated" />
+                      <div className="flex flex-wrap gap-2">
+                        <Button onClick={() => void saveNote()}>
+                          <FilePlus2 className="size-4" />
+                          {noteForm.id === null ? 'Save note' : 'Update note'}
+                        </Button>
+                        {noteForm.id !== null ? (
+                          <Button variant="ghost" onClick={() => setNoteForm(EMPTY_NOTE_FORM)}>
+                            Cancel edit
+                          </Button>
+                        ) : null}
+                      </div>
+                    </div>
+                  </Panel>
+
+                  <Panel
+                    title="Research Library"
+                    subtitle={`${library.length} artifacts match the current filter set.`}
+                    actions={(
+                      <div className="flex items-center gap-2">
+                        <span className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Attach to</span>
+                        <select className="rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-2 py-1 text-xs text-[color:var(--terminal-bright)]" value={attachSection} onChange={(event) => setAttachSection(event.target.value as ResearchMemoSection)}>
+                          {MEMO_SECTIONS.map((section) => (
+                            <option key={section.value} value={section.value}>{section.label}</option>
+                          ))}
+                        </select>
+                      </div>
+                    )}
+                  >
+                    <div className="space-y-3">
+                      {library.length === 0 ? (
+                        <p className="text-sm text-[color:var(--terminal-muted)]">No artifacts match the current search and filter combination.</p>
+                      ) : (
+                        library.map((artifact) => (
+                          <article key={artifact.id} className="rounded-2xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
+                            <div className="flex flex-wrap items-start justify-between gap-3">
+                              <div>
+                                <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">
+                                  {artifact.kind.replace('_', ' ')} · {artifact.source} · {formatTimestamp(artifact.updated_at)}
+                                </p>
+                                <h4 className="mt-1 text-sm font-semibold text-[color:var(--terminal-bright)]">
+                                  {artifact.title ?? `${artifact.kind.replace('_', ' ')} artifact`}
+                                </h4>
+                              </div>
+                              <div className="flex flex-wrap gap-2">
+                                {artifact.kind === 'upload' && artifact.storage_path ? (
+                                  <a className="inline-flex items-center gap-1 rounded-lg border border-[color:var(--line-weak)] px-2 py-1 text-xs text-[color:var(--accent)] transition hover:border-[color:var(--line-strong)]" href={getResearchArtifactFileUrl(artifact.id)}>
+                                    <Download className="size-3" />
+                                    File
+                                  </a>
+                                ) : null}
+                                <Button variant="ghost" className="px-2 py-1 text-xs" onClick={() => void attachArtifact(artifact)}>
+                                  <Link2 className="size-3" />
+                                  Attach
+                                </Button>
+                                {artifact.kind === 'note' ? (
+                                  <Button variant="ghost" className="px-2 py-1 text-xs" onClick={() => setNoteForm(noteFormFromArtifact(artifact))}>
+                                    Edit
+                                  </Button>
+                                ) : null}
+                                {artifact.source === 'user' || artifact.kind === 'upload' ? (
+                                  <Button
+                                    variant="danger"
+                                    className="px-2 py-1 text-xs"
+                                    onClick={async () => {
+                                      try {
+                                        await deleteResearchArtifact(artifact.id);
+                                        setNotice('Removed artifact from the library.');
+                                        await invalidateResearch(ticker);
+                                        await loadWorkspace(ticker);
+                                      } catch (err) {
+                                        setError(err instanceof Error ? err.message : 'Unable to delete artifact');
+                                      }
+                                    }}
+                                  >
+                                    <Trash2 className="size-3" />
+                                    Delete
+                                  </Button>
+                                ) : null}
+                              </div>
+                            </div>
+                            {artifact.summary ? (
+                              <p className="mt-3 text-sm leading-6 text-[color:var(--terminal-bright)]">{artifact.summary}</p>
+                            ) : null}
+                            {artifact.body_markdown ? (
+                              <p className="mt-3 whitespace-pre-wrap text-sm leading-6 text-[color:var(--terminal-muted)]">{artifact.body_markdown}</p>
+                            ) : null}
+                            <div className="mt-4 flex flex-wrap gap-2">
+                              {artifact.linked_to_memo ? (
+                                <span className="rounded-full border border-[color:var(--line-strong)] px-2 py-1 text-[10px] uppercase tracking-[0.14em] text-[color:var(--accent)]">In memo</span>
+                              ) : null}
+                              {artifact.accession_number ? (
+                                <span className="rounded-full border border-[color:var(--line-weak)] px-2 py-1 text-[10px] uppercase tracking-[0.14em] text-[color:var(--terminal-muted)]">{artifact.accession_number}</span>
+                              ) : null}
+                              {artifact.tags.map((tag) => (
+                                <button
+                                  key={`${artifact.id}-${tag}`}
+                                  type="button"
+                                  className="rounded-full border border-[color:var(--line-weak)] px-2 py-1 text-[10px] uppercase tracking-[0.14em] text-[color:var(--terminal-muted)] transition hover:border-[color:var(--line-strong)]"
+                                  onClick={() => setTagFilter(tag)}
+                                >
+                                  {tag}
+                                </button>
+                              ))}
+                            </div>
+                          </article>
+                        ))
+                      )}
+                    </div>
+                  </Panel>
+
+                  <Panel
+                    title="Upload Research"
+                    subtitle="Store decks, transcripts, channel-check notes, and internal models with metadata-first handling."
+                    actions={<FolderUp className="size-4 text-[color:var(--accent)]" />}
+                  >
+                    <div className="space-y-3">
+                      <Input aria-label="Upload title" value={uploadTitle} onChange={(event) => setUploadTitle(event.target.value)} placeholder="Optional display title" />
+                      <Input aria-label="Upload summary" value={uploadSummary} onChange={(event) => setUploadSummary(event.target.value)} placeholder="Optional file summary" />
+                      <Input aria-label="Upload tags" value={uploadTags} onChange={(event) => setUploadTags(event.target.value)} placeholder="Tags, comma-separated" />
+                      <input
+                        aria-label="Upload file"
+                        type="file"
+                        onChange={(event) => setUploadFile(event.target.files?.[0] ?? null)}
+                        className="block w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]"
+                      />
+                      <Button variant="secondary" onClick={() => void uploadFileToLibrary()} disabled={!uploadFile}>
+                        <UploadIcon />
+                        Upload file
+                      </Button>
+                    </div>
+                  </Panel>
+                </div>
+
+                <Panel
+                  title="Investment Memo"
+                  subtitle="This is the living buy-side thesis. Use the library to attach evidence into sections before packet review."
+                  actions={<BookOpenText className="size-4 text-[color:var(--accent)]" />}
+                >
+                  <div className="space-y-4">
+                    <div className="grid gap-3 md:grid-cols-2">
+                      <select aria-label="Memo rating" className="rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]" value={memoForm.rating} onChange={(event) => setMemoForm((current) => ({ ...current, rating: event.target.value }))}>
+                        <option value="">Rating</option>
+                        <option value="strong_buy">Strong Buy</option>
+                        <option value="buy">Buy</option>
+                        <option value="hold">Hold</option>
+                        <option value="sell">Sell</option>
+                      </select>
+                      <select aria-label="Memo conviction" className="rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)]" value={memoForm.conviction} onChange={(event) => setMemoForm((current) => ({ ...current, conviction: event.target.value }))}>
+                        <option value="">Conviction</option>
+                        <option value="high">High</option>
+                        <option value="medium">Medium</option>
+                        <option value="low">Low</option>
+                      </select>
+                    </div>
+                    <div className="grid gap-3 md:grid-cols-2">
+                      <Input aria-label="Memo time horizon" value={memoForm.timeHorizonMonths} onChange={(event) => setMemoForm((current) => ({ ...current, timeHorizonMonths: event.target.value }))} placeholder="Time horizon in months" />
+                      <Input aria-label="Packet title" value={memoForm.packetTitle} onChange={(event) => setMemoForm((current) => ({ ...current, packetTitle: event.target.value }))} placeholder="Packet title override" />
+                    </div>
+                    <Input aria-label="Packet subtitle" value={memoForm.packetSubtitle} onChange={(event) => setMemoForm((current) => ({ ...current, packetSubtitle: event.target.value }))} placeholder="Packet subtitle" />
+                    {MEMO_SECTIONS.map((section) => {
+                      const fieldMap: Record<ResearchMemoSection, keyof MemoFormState> = {
+                        thesis: 'thesisMarkdown',
+                        variant_view: 'variantViewMarkdown',
+                        catalysts: 'catalystsMarkdown',
+                        risks: 'risksMarkdown',
+                        disconfirming_evidence: 'disconfirmingEvidenceMarkdown',
+                        next_actions: 'nextActionsMarkdown'
+                      };
+                      const field = fieldMap[section.value];
+
+                      return (
+                        <div key={section.value}>
+                          <label className="mb-1 block text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">{section.label}</label>
+                          <textarea
+                            aria-label={`Memo ${section.label}`}
+                            value={memoForm[field]}
+                            onChange={(event) => setMemoForm((current) => ({ ...current, [field]: event.target.value }))}
+                            className="min-h-[108px] w-full rounded-lg border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] px-3 py-2 text-sm text-[color:var(--terminal-bright)] outline-none transition placeholder:text-[color:var(--terminal-muted)] focus:border-[color:var(--line-strong)] focus:shadow-[0_0_0_3px_rgba(0,255,180,0.14)]"
+                            placeholder={`Write ${section.label.toLowerCase()}...`}
+                          />
+                        </div>
+                      );
+                    })}
+                    <Button onClick={() => void saveMemo()}>
+                      <NotebookPen className="size-4" />
+                      Save memo
+                    </Button>
+                  </div>
+                </Panel>
+              </div>
+
+              <Panel
+                title="Research Packet"
+                subtitle="Presentation-ready memo sections with attached evidence for quick PM or IC review."
+                actions={<Sparkles className="size-4 text-[color:var(--accent)]" />}
+              >
+                <div className="space-y-6">
+                  {workspace.packet.sections.map((section) => (
+                    <section key={section.section} className="rounded-2xl border border-[color:var(--line-weak)] bg-[color:var(--panel-soft)] p-4">
+                      <div className="flex flex-wrap items-start justify-between gap-3">
+                        <div>
+                          <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">Packet Section</p>
+                          <h3 className="mt-1 text-lg font-semibold text-[color:var(--terminal-bright)]">{section.title}</h3>
+                        </div>
+                        <p className="text-xs uppercase tracking-[0.16em] text-[color:var(--terminal-muted)]">{section.evidence.length} evidence items</p>
+                      </div>
+                      <p className="mt-4 whitespace-pre-wrap text-sm leading-7 text-[color:var(--terminal-bright)]">
+                        {section.body_markdown || 'No memo content yet for this section.'}
+                      </p>
+                      {section.evidence.length > 0 ? (
+                        <div className="mt-4 grid gap-3 lg:grid-cols-2">
+                          {section.evidence.map((item) => (
+                            <article key={item.id} className="rounded-xl border border-[color:var(--line-weak)] bg-[color:var(--panel)] p-3">
+                              <div className="flex items-start justify-between gap-3">
+                                <div>
+                                  <p className="text-xs uppercase tracking-[0.14em] text-[color:var(--terminal-muted)]">{item.artifact.kind.replace('_', ' ')}</p>
+                                  <h4 className="mt-1 text-sm font-semibold text-[color:var(--terminal-bright)]">{item.artifact.title ?? 'Untitled evidence'}</h4>
+                                </div>
+                                {workspace.memo ? (
+                                  <Button
+                                    variant="ghost"
+                                    className="px-2 py-1 text-xs"
+                                    onClick={async () => {
+                                      try {
+                                        await deleteResearchMemoEvidence(workspace.memo!.id, item.id);
+                                        setNotice('Removed memo evidence.');
+                                        await invalidateResearch(ticker);
+                                        await loadWorkspace(ticker);
+                                      } catch (err) {
+                                        setError(err instanceof Error ? err.message : 'Unable to remove memo evidence');
+                                      }
+                                    }}
+                                  >
+                                    Remove
+                                  </Button>
+                                ) : null}
+                              </div>
+                              {item.annotation ? (
+                                <p className="mt-2 text-sm text-[color:var(--terminal-muted)]">{item.annotation}</p>
+                              ) : null}
+                              <p className="mt-2 text-sm text-[color:var(--terminal-bright)]">{item.artifact.summary ?? item.artifact.body_markdown ?? 'No summary available.'}</p>
+                            </article>
+                          ))}
+                        </div>
+                      ) : null}
+                    </section>
+                  ))}
+                </div>
+              </Panel>
+            </>
+          )}
+        </>
+      ) : null}
+    </AppShell>
+  );
+}
+
+function UploadIcon() {
+  return <FolderUp className="size-4" />;
+}
diff --git a/app/watchlist/page.tsx b/app/watchlist/page.tsx
index 1f1990e..313b65d 100644
--- a/app/watchlist/page.tsx
+++ b/app/watchlist/page.tsx
@@ -391,6 +391,14 @@ export default function WatchlistPage() {
                             Analyze
                             <ArrowRight className="size-3" />
                           </Link>
+                          <Link
+                            href={`/research?ticker=${item.ticker}`}
+                            onMouseEnter={() => prefetchResearchTicker(item.ticker)}
+                            onFocus={() => prefetchResearchTicker(item.ticker)}
+                            className="inline-flex items-center gap-1 rounded-md border border-[color:var(--line-weak)] px-2 py-1 text-xs text-[color:var(--accent)] transition hover:border-[color:var(--line-strong)] hover:text-[color:var(--accent-strong)]"
+                          >
+                            Research
+                          </Link>
                           <Link
                             href={`/financials?ticker=${item.ticker}`}
                             onMouseEnter={() => prefetchResearchTicker(item.ticker)}
diff --git a/components/shell/app-shell.tsx b/components/shell/app-shell.tsx
index 4f32338..7b13c61 100644
--- a/components/shell/app-shell.tsx
+++ b/components/shell/app-shell.tsx
@@ -2,7 +2,7 @@
 
 import { useQueryClient } from '@tanstack/react-query';
 import type { LucideIcon } from 'lucide-react';
-import { Activity, BookOpenText, ChartCandlestick, Eye, Landmark, LineChart, LogOut, Menu } from 'lucide-react';
+import { Activity, BarChart3, BookOpenText, ChartCandlestick, Eye, Landmark, LineChart, LogOut, Menu, NotebookTabs } from 'lucide-react';
 import Link from 'next/link';
 import { usePathname, useRouter, useSearchParams } from 'next/navigation';
 import { useEffect, useMemo, useState } from 'react';
@@ -11,6 +11,7 @@ import { TaskDetailModal } from '@/components/notifications/task-detail-modal';
 import { TaskNotificationsTrigger } from '@/components/notifications/task-notifications-trigger';
 import {
   companyAnalysisQueryOptions,
+  companyFinancialStatementsQueryOptions,
   filingsQueryOptions,
   holdingsQueryOptions,
   latestPortfolioInsightQueryOptions,
@@ -18,6 +19,7 @@ import {
   recentTasksQueryOptions,
   watchlistQueryOptions
 } from '@/lib/query/options';
+import { buildGraphingHref } from '@/lib/graphing/catalog';
 import type { ActiveContext, NavGroup, NavItem } from '@/lib/types';
 import { Button } from '@/components/ui/button';
 import { useTaskNotificationsCenter } from '@/hooks/use-task-notifications-center';
@@ -56,6 +58,26 @@ const NAV_ITEMS: NavConfigItem[] = [
     preserveTicker: true,
     mobilePrimary: true
   },
+  {
+    id: 'research',
+    href: '/research',
+    label: 'Research',
+    icon: NotebookTabs,
+    group: 'research',
+    matchMode: 'exact',
+    preserveTicker: true,
+    mobilePrimary: true
+  },
+  {
+    id: 'graphing',
+    href: '/graphing',
+    label: 'Graphing',
+    icon: BarChart3,
+    group: 'research',
+    matchMode: 'exact',
+    preserveTicker: true,
+    mobilePrimary: false
+  },
   {
     id: 'financials',
     href: '/financials',
@@ -117,6 +139,10 @@ function toTickerHref(baseHref: string, activeTicker: string | null) {
 }
 
 function resolveNavHref(item: NavItem, context: ActiveContext) {
+  if (item.href === '/graphing') {
+    return buildGraphingHref(context.activeTicker);
+  }
+
   if (!item.preserveTicker) {
     return item.href;
   }
@@ -134,6 +160,8 @@ function isItemActive(item: NavItem, pathname: string) {
 
 function buildDefaultBreadcrumbs(pathname: string, activeTicker: string | null) {
   const analysisHref = toTickerHref('/analysis', activeTicker);
+  const researchHref = toTickerHref('/research', activeTicker);
+  const graphingHref = buildGraphingHref(activeTicker);
   const financialsHref = toTickerHref('/financials', activeTicker);
   const filingsHref = toTickerHref('/filings', activeTicker);
 
@@ -153,6 +181,13 @@ function buildDefaultBreadcrumbs(pathname: string, activeTicker: string | null)
     return [{ label: 'Analysis' }];
   }
 
+  if (pathname.startsWith('/research')) {
+    return [
+      { label: 'Analysis', href: analysisHref },
+      { label: 'Research', href: researchHref }
+    ];
+  }
+
   if (pathname.startsWith('/financials')) {
     return [
       { label: 'Analysis', href: analysisHref },
@@ -160,6 +195,14 @@ function buildDefaultBreadcrumbs(pathname: string, activeTicker: string | null)
     ];
   }
 
+  if (pathname.startsWith('/graphing')) {
+    return [
+      { label: 'Analysis', href: analysisHref },
+      { label: 'Graphing', href: graphingHref },
+      { label: activeTicker ?? 'Compare Set' }
+    ];
+  }
+
   if (pathname.startsWith('/filings')) {
     return [
       { label: 'Analysis', href: analysisHref },
@@ -281,6 +324,20 @@ export function AppShell({ title, subtitle, actions, activeTicker, breadcrumbs,
       return;
     }
 
+    if (href.startsWith('/graphing')) {
+      if (context.activeTicker) {
+        void queryClient.prefetchQuery(companyFinancialStatementsQueryOptions({
+          ticker: context.activeTicker,
+          surfaceKind: 'income_statement',
+          cadence: 'annual',
+          includeDimensions: false,
+          includeFacts: false,
+          limit: 16
+        }));
+      }
+      return;
+    }
+
     if (href.startsWith('/filings')) {
       void queryClient.prefetchQuery(filingsQueryOptions({
         ticker: context.activeTicker ?? undefined,
@@ -317,7 +374,7 @@ export function AppShell({ title, subtitle, actions, activeTicker, breadcrumbs,
     };
 
     const runPrefetch = () => {
-      const prioritized = navEntries.filter((entry) => entry.id === 'analysis' || entry.id === 'filings' || entry.id === 'portfolio');
+      const prioritized = navEntries.filter((entry) => entry.id === 'analysis' || entry.id === 'graphing' || entry.id === 'filings' || entry.id === 'portfolio');
       for (const entry of prioritized) {
         prefetchForHref(entry.href);
       }
diff --git a/drizzle/0008_research_workspace.sql b/drizzle/0008_research_workspace.sql
new file mode 100644
index 0000000..e3ac136
--- /dev/null
+++ b/drizzle/0008_research_workspace.sql
@@ -0,0 +1,91 @@
+CREATE TABLE `research_artifact` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` text NOT NULL,
+	`organization_id` text,
+	`ticker` text NOT NULL,
+	`accession_number` text,
+	`kind` text NOT NULL,
+	`source` text NOT NULL DEFAULT 'user',
+	`subtype` text,
+	`title` text,
+	`summary` text,
+	`body_markdown` text,
+	`search_text` text,
+	`visibility_scope` text NOT NULL DEFAULT 'private',
+	`tags` text,
+	`metadata` text,
+	`file_name` text,
+	`mime_type` text,
+	`file_size_bytes` integer,
+	`storage_path` text,
+	`created_at` text NOT NULL,
+	`updated_at` text NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `user`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`organization_id`) REFERENCES `organization`(`id`) ON UPDATE no action ON DELETE set null
+);
+--> statement-breakpoint
+CREATE INDEX `research_artifact_ticker_idx` ON `research_artifact` (`user_id`,`ticker`,`updated_at`);
+--> statement-breakpoint
+CREATE INDEX `research_artifact_kind_idx` ON `research_artifact` (`user_id`,`kind`,`updated_at`);
+--> statement-breakpoint
+CREATE INDEX `research_artifact_accession_idx` ON `research_artifact` (`user_id`,`accession_number`);
+--> statement-breakpoint
+CREATE INDEX `research_artifact_source_idx` ON `research_artifact` (`user_id`,`source`,`updated_at`);
+--> statement-breakpoint
+
+CREATE TABLE `research_memo` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` text NOT NULL,
+	`organization_id` text,
+	`ticker` text NOT NULL,
+	`rating` text,
+	`conviction` text,
+	`time_horizon_months` integer,
+	`packet_title` text,
+	`packet_subtitle` text,
+	`thesis_markdown` text NOT NULL DEFAULT '',
+	`variant_view_markdown` text NOT NULL DEFAULT '',
+	`catalysts_markdown` text NOT NULL DEFAULT '',
+	`risks_markdown` text NOT NULL DEFAULT '',
+	`disconfirming_evidence_markdown` text NOT NULL DEFAULT '',
+	`next_actions_markdown` text NOT NULL DEFAULT '',
+	`created_at` text NOT NULL,
+	`updated_at` text NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `user`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`organization_id`) REFERENCES `organization`(`id`) ON UPDATE no action ON DELETE set null
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `research_memo_ticker_uidx` ON `research_memo` (`user_id`,`ticker`);
+--> statement-breakpoint
+CREATE INDEX `research_memo_updated_idx` ON `research_memo` (`user_id`,`updated_at`);
+--> statement-breakpoint
+
+CREATE TABLE `research_memo_evidence` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`memo_id` integer NOT NULL,
+	`artifact_id` integer NOT NULL,
+	`section` text NOT NULL,
+	`annotation` text,
+	`sort_order` integer NOT NULL DEFAULT 0,
+	`created_at` text NOT NULL,
+	FOREIGN KEY (`memo_id`) REFERENCES `research_memo`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`artifact_id`) REFERENCES `research_artifact`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+CREATE INDEX `research_memo_evidence_memo_idx` ON `research_memo_evidence` (`memo_id`,`section`,`sort_order`);
+--> statement-breakpoint
+CREATE INDEX `research_memo_evidence_artifact_idx` ON `research_memo_evidence` (`artifact_id`);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `research_memo_evidence_unique_uidx` ON `research_memo_evidence` (`memo_id`,`artifact_id`,`section`);
+--> statement-breakpoint
+
+CREATE VIRTUAL TABLE `research_artifact_fts` USING fts5(
+	artifact_id UNINDEXED,
+	user_id UNINDEXED,
+	ticker UNINDEXED,
+	title,
+	summary,
+	body_markdown,
+	search_text,
+	tags_text
+);
diff --git a/drizzle/meta/_journal.json b/drizzle/meta/_journal.json
index ea5d4c2..083dfdb 100644
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@@ -57,6 +57,13 @@
       "when": 1772863200000,
       "tag": "0007_company_financial_bundles",
       "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "6",
+      "when": 1772906400000,
+      "tag": "0008_research_workspace",
+      "breakpoints": true
     }
   ]
 }
diff --git a/e2e/auth.spec.ts b/e2e/auth.spec.ts
index f93e1c0..ff0c1d3 100644
--- a/e2e/auth.spec.ts
+++ b/e2e/auth.spec.ts
@@ -1,17 +1,51 @@
-import { expect, test } from '@playwright/test';
+import { expect, test, type Page } from '@playwright/test';
 
 const PASSWORD = 'Sup3rSecure!123';
 
-test('redirects protected routes to sign in and preserves the return path', async ({ page }) => {
-  await page.goto('/analysis?ticker=nvda');
+test.describe.configure({ mode: 'serial' });
+
+function createDeferred() {
+  let resolve: (() => void) | null = null;
+  const promise = new Promise<void>((done) => {
+    resolve = done;
+  });
+
+  return {
+    promise,
+    resolve: () => resolve?.()
+  };
+}
+
+async function gotoAuthPage(page: Page, path: string) {
+  await page.goto(path, { waitUntil: 'domcontentloaded' });
+  await page.waitForLoadState('networkidle');
+}
+
+test('preserves the return path while switching between auth screens and shows the expected controls', async ({ page }) => {
+  await gotoAuthPage(page, '/auth/signin?next=%2Fanalysis%3Fticker%3DNVDA');
 
-  await expect(page).toHaveURL(/\/auth\/signin\?/);
   await expect(page.getByRole('heading', { name: 'Secure Sign In' })).toBeVisible();
-  expect(new URL(page.url()).searchParams.get('next')).toBe('/analysis?ticker=nvda');
+  await expect(page.getByText('Use email/password or request a magic link.')).toBeVisible();
+  await expect(page.locator('input[autocomplete="email"]')).toBeVisible();
+  await expect(page.locator('input[autocomplete="current-password"]')).toBeVisible();
+  await expect(page.getByRole('button', { name: 'Sign in with password' })).toBeVisible();
+  await expect(page.getByRole('button', { name: 'Send magic link' })).toBeVisible();
+  await expect(page.getByRole('link', { name: 'Create one' })).toHaveAttribute('href', '/auth/signup?next=%2Fanalysis%3Fticker%3DNVDA');
+
+  await page.getByRole('link', { name: 'Create one' }).click();
+
+  await expect(page).toHaveURL(/\/auth\/signup\?next=%2Fanalysis%3Fticker%3DNVDA$/);
+  await expect(page.getByRole('heading', { name: 'Create Account' })).toBeVisible();
+  await expect(page.getByText('Set up your operator profile to access portfolio and filings intelligence.')).toBeVisible();
+  await expect(page.locator('input[autocomplete="name"]')).toBeVisible();
+  await expect(page.locator('input[autocomplete="email"]')).toBeVisible();
+  await expect(page.locator('input[autocomplete="new-password"]').first()).toBeVisible();
+  await expect(page.getByRole('button', { name: 'Create account' })).toBeVisible();
+  await expect(page.getByRole('link', { name: 'Sign in' })).toHaveAttribute('href', '/auth/signin?next=%2Fanalysis%3Fticker%3DNVDA');
 });
 
 test('shows client-side validation when signup passwords do not match', async ({ page }) => {
-  await page.goto('/auth/signup');
+  await gotoAuthPage(page, '/auth/signup');
 
   await page.locator('input[autocomplete="name"]').fill('Playwright User');
   await page.locator('input[autocomplete="email"]').fill('mismatch@example.com');
@@ -22,17 +56,57 @@ test('shows client-side validation when signup passwords do not match', async ({
   await expect(page.getByText('Passwords do not match.')).toBeVisible();
 });
 
-test('creates a new account and lands on the command center', async ({ page }) => {
-  const email = `playwright-${Date.now()}@example.com`;
+test('shows loading affordances while sign-in is in flight', async ({ page }) => {
+  const gate = createDeferred();
 
-  await page.goto('/auth/signup');
+  await page.route('**/api/auth/sign-in/email', async (route) => {
+    await gate.promise;
+    await route.fulfill({
+      status: 401,
+      contentType: 'application/json',
+      body: JSON.stringify({ message: 'Invalid credentials' })
+    });
+  });
+
+  await gotoAuthPage(page, '/auth/signin');
+  await page.locator('input[autocomplete="email"]').fill('playwright@example.com');
+  await page.locator('input[autocomplete="current-password"]').fill(PASSWORD);
+
+  const submitButton = page.getByRole('button', { name: 'Sign in with password' });
+  const magicLinkButton = page.getByRole('button', { name: 'Send magic link' });
+
+  await submitButton.click();
+
+  await expect(page.getByRole('button', { name: 'Signing in...' })).toBeDisabled();
+  await expect(magicLinkButton).toBeDisabled();
+
+  gate.resolve();
+
+  await expect(page.getByText('Invalid credentials')).toBeVisible();
+});
+
+test('shows loading affordances while sign-up is in flight', async ({ page }) => {
+  const gate = createDeferred();
+
+  await page.route('**/api/auth/sign-up/email', async (route) => {
+    await gate.promise;
+    await route.fulfill({
+      status: 409,
+      contentType: 'application/json',
+      body: JSON.stringify({ message: 'Email already exists' })
+    });
+  });
+
+  await gotoAuthPage(page, '/auth/signup');
   await page.locator('input[autocomplete="name"]').fill('Playwright User');
-  await page.locator('input[autocomplete="email"]').fill(email);
+  await page.locator('input[autocomplete="email"]').fill(`playwright-${Date.now()}@example.com`);
   await page.locator('input[autocomplete="new-password"]').first().fill(PASSWORD);
   await page.locator('input[autocomplete="new-password"]').nth(1).fill(PASSWORD);
   await page.getByRole('button', { name: 'Create account' }).click();
 
-  await expect(page).toHaveURL(/\/$/);
-  await expect(page.getByRole('heading', { name: 'Command Center' })).toBeVisible();
-  await expect(page.getByText('Quick Links')).toBeVisible();
+  await expect(page.getByRole('button', { name: 'Creating account...' })).toBeDisabled();
+
+  gate.resolve();
+
+  await expect(page.getByText('Email already exists')).toBeVisible();
 });
diff --git a/e2e/fixtures/sample-research.txt b/e2e/fixtures/sample-research.txt
new file mode 100644
index 0000000..f9f32cd
--- /dev/null
+++ b/e2e/fixtures/sample-research.txt
@@ -0,0 +1,4 @@
+Supply-chain diligence notes:
+- Channel checks remain constructive.
+- Gross margin watchpoint is still mix-driven.
+- Need follow-up on inventory normalization pace.
diff --git a/e2e/graphing.spec.ts b/e2e/graphing.spec.ts
new file mode 100644
index 0000000..8fc965b
--- /dev/null
+++ b/e2e/graphing.spec.ts
@@ -0,0 +1,255 @@
+import { expect, test, type Page, type TestInfo } from '@playwright/test';
+
+const PASSWORD = 'Sup3rSecure!123';
+
+function toSlug(value: string) {
+  return value
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, '-')
+    .replace(/^-+|-+$/g, '')
+    .slice(0, 48);
+}
+
+async function signUp(page: Page, testInfo: TestInfo) {
+  const email = `playwright-graphing-${testInfo.workerIndex}-${toSlug(testInfo.title)}-${Date.now()}@example.com`;
+
+  await page.goto('/auth/signup');
+  await page.locator('input[autocomplete="name"]').fill('Playwright Graphing User');
+  await page.locator('input[autocomplete="email"]').fill(email);
+  await page.locator('input[autocomplete="new-password"]').first().fill(PASSWORD);
+  await page.locator('input[autocomplete="new-password"]').nth(1).fill(PASSWORD);
+  await page.getByRole('button', { name: 'Create account' }).click();
+  await expect(page.getByRole('heading', { name: 'Command Center' })).toBeVisible({ timeout: 30_000 });
+  await expect(page).toHaveURL(/\/$/, { timeout: 30_000 });
+}
+
+function createFinancialsPayload(input: {
+  ticker: string;
+  companyName: string;
+  cadence: 'annual' | 'quarterly' | 'ltm';
+  surface: string;
+}) {
+  return {
+    financials: {
+      company: {
+        ticker: input.ticker,
+        companyName: input.companyName,
+        cik: null
+      },
+      surfaceKind: input.surface,
+      cadence: input.cadence,
+      displayModes: ['standardized'],
+      defaultDisplayMode: 'standardized',
+      periods: [
+        {
+          id: `${input.ticker}-p1`,
+          filingId: 1,
+          accessionNumber: `0000-${input.ticker}-1`,
+          filingDate: '2025-02-01',
+          periodStart: '2024-01-01',
+          periodEnd: '2024-12-31',
+          filingType: '10-K',
+          periodLabel: 'FY 2024'
+        },
+        {
+          id: `${input.ticker}-p2`,
+          filingId: 2,
+          accessionNumber: `0000-${input.ticker}-2`,
+          filingDate: '2026-02-01',
+          periodStart: '2025-01-01',
+          periodEnd: '2025-12-31',
+          filingType: '10-K',
+          periodLabel: 'FY 2025'
+        }
+      ],
+      statementRows: {
+        faithful: [],
+        standardized: [
+          {
+            key: 'revenue',
+            label: 'Revenue',
+            category: 'revenue',
+            order: 10,
+            unit: 'currency',
+            values: {
+              [`${input.ticker}-p1`]: input.ticker === 'AAPL' ? 320 : 280,
+              [`${input.ticker}-p2`]: input.ticker === 'AAPL' ? 360 : 330
+            },
+            sourceConcepts: ['revenue'],
+            sourceRowKeys: ['revenue'],
+            sourceFactIds: [1],
+            formulaKey: null,
+            hasDimensions: false,
+            resolvedSourceRowKeys: {
+              [`${input.ticker}-p1`]: 'revenue',
+              [`${input.ticker}-p2`]: 'revenue'
+            }
+          },
+          {
+            key: 'total_assets',
+            label: 'Total Assets',
+            category: 'asset',
+            order: 20,
+            unit: 'currency',
+            values: {
+              [`${input.ticker}-p1`]: input.ticker === 'AAPL' ? 410 : 380,
+              [`${input.ticker}-p2`]: input.ticker === 'AAPL' ? 450 : 420
+            },
+            sourceConcepts: ['total_assets'],
+            sourceRowKeys: ['total_assets'],
+            sourceFactIds: [2],
+            formulaKey: null,
+            hasDimensions: false,
+            resolvedSourceRowKeys: {
+              [`${input.ticker}-p1`]: 'total_assets',
+              [`${input.ticker}-p2`]: 'total_assets'
+            }
+          },
+          {
+            key: 'free_cash_flow',
+            label: 'Free Cash Flow',
+            category: 'cash_flow',
+            order: 30,
+            unit: 'currency',
+            values: {
+              [`${input.ticker}-p1`]: input.ticker === 'AAPL' ? 95 : 80,
+              [`${input.ticker}-p2`]: input.ticker === 'AAPL' ? 105 : 92
+            },
+            sourceConcepts: ['free_cash_flow'],
+            sourceRowKeys: ['free_cash_flow'],
+            sourceFactIds: [3],
+            formulaKey: null,
+            hasDimensions: false,
+            resolvedSourceRowKeys: {
+              [`${input.ticker}-p1`]: 'free_cash_flow',
+              [`${input.ticker}-p2`]: 'free_cash_flow'
+            }
+          }
+        ]
+      },
+      ratioRows: [
+        {
+          key: 'gross_margin',
+          label: 'Gross Margin',
+          category: 'margins',
+          order: 10,
+          unit: 'percent',
+          values: {
+            [`${input.ticker}-p1`]: input.ticker === 'AAPL' ? 0.43 : 0.39,
+            [`${input.ticker}-p2`]: input.ticker === 'AAPL' ? 0.45 : 0.41
+          },
+          sourceConcepts: ['gross_margin'],
+          sourceRowKeys: ['gross_margin'],
+          sourceFactIds: [4],
+          formulaKey: 'gross_margin',
+          hasDimensions: false,
+          resolvedSourceRowKeys: {
+            [`${input.ticker}-p1`]: null,
+            [`${input.ticker}-p2`]: null
+          },
+          denominatorKey: 'revenue'
+        }
+      ],
+      kpiRows: null,
+      trendSeries: [],
+      categories: [],
+      availability: {
+        adjusted: false,
+        customMetrics: false
+      },
+      nextCursor: null,
+      facts: null,
+      coverage: {
+        filings: 2,
+        rows: 3,
+        dimensions: 0,
+        facts: 0
+      },
+      dataSourceStatus: {
+        enabled: true,
+        hydratedFilings: 2,
+        partialFilings: 0,
+        failedFilings: 0,
+        pendingFilings: 0,
+        queuedSync: false
+      },
+      metrics: {
+        taxonomy: null,
+        validation: null
+      },
+      dimensionBreakdown: null
+    }
+  };
+}
+
+async function mockGraphingFinancials(page: Page) {
+  await page.route('**/api/financials/company**', async (route) => {
+    const url = new URL(route.request().url());
+    const ticker = url.searchParams.get('ticker') ?? 'MSFT';
+    const cadence = (url.searchParams.get('cadence') ?? 'annual') as 'annual' | 'quarterly' | 'ltm';
+    const surface = url.searchParams.get('surface') ?? 'income_statement';
+
+    if (ticker === 'BAD') {
+      await route.fulfill({
+        status: 404,
+        contentType: 'application/json',
+        body: JSON.stringify({ error: 'Ticker not found' })
+      });
+      return;
+    }
+
+    const companyName = ticker === 'AAPL'
+      ? 'Apple Inc.'
+      : ticker === 'NVDA'
+        ? 'NVIDIA Corporation'
+        : ticker === 'AMD'
+          ? 'Advanced Micro Devices, Inc.'
+          : 'Microsoft Corporation';
+
+    await route.fulfill({
+      status: 200,
+      contentType: 'application/json',
+      body: JSON.stringify(createFinancialsPayload({
+        ticker,
+        companyName,
+        cadence,
+        surface
+      }))
+    });
+  });
+}
+
+test('supports graphing compare controls and partial failures', async ({ page }, testInfo) => {
+  await signUp(page, testInfo);
+  await mockGraphingFinancials(page);
+
+  await page.goto('/graphing');
+
+  await expect(page).toHaveURL(/tickers=MSFT%2CAAPL%2CNVDA/);
+  await expect(page.getByRole('heading', { name: 'Graphing' })).toBeVisible();
+  await expect(page.getByText('Microsoft Corporation')).toBeVisible();
+
+  await page.getByRole('button', { name: 'Graph surface Balance Sheet' }).click();
+  await expect(page).toHaveURL(/surface=balance_sheet/);
+  await expect(page).toHaveURL(/metric=total_assets/);
+
+  await page.getByRole('button', { name: 'Graph cadence Quarterly' }).click();
+  await expect(page).toHaveURL(/cadence=quarterly/);
+
+  await page.getByRole('button', { name: 'Chart type Bar' }).click();
+  await expect(page).toHaveURL(/chart=bar/);
+
+  await page.getByRole('button', { name: 'Remove AAPL' }).click();
+  await expect(page).not.toHaveURL(/AAPL/);
+
+  await page.getByLabel('Compare tickers').fill('MSFT, NVDA, AMD');
+  await page.getByRole('button', { name: 'Update Compare Set' }).click();
+  await expect(page).toHaveURL(/tickers=MSFT%2CNVDA%2CAMD/);
+  await expect(page.getByText('Advanced Micro Devices, Inc.')).toBeVisible();
+
+  await page.goto('/graphing?tickers=MSFT,BAD&surface=income_statement&metric=revenue&cadence=annual&chart=line&scale=millions');
+  await expect(page.getByText('Partial coverage detected.')).toBeVisible();
+  await expect(page.getByRole('cell', { name: /BAD/ })).toBeVisible();
+  await expect(page.getByText('Ticker not found')).toBeVisible();
+  await expect(page.getByText('Microsoft Corporation')).toBeVisible();
+});
diff --git a/e2e/research-mvp.spec.ts b/e2e/research-mvp.spec.ts
index 523f89c..72224e9 100644
--- a/e2e/research-mvp.spec.ts
+++ b/e2e/research-mvp.spec.ts
@@ -17,14 +17,59 @@ function toSlug(value: string) {
 
 async function signUp(page: Page, testInfo: TestInfo) {
   const email = `playwright-research-${testInfo.workerIndex}-${toSlug(testInfo.title)}-${Date.now()}@example.com`;
+  const baseURL = process.env.PLAYWRIGHT_BASE_URL ?? 'http://127.0.0.1:3400';
+  const output = execFileSync('bun', [
+    '-e',
+    `
+const [email, password] = process.argv.slice(1);
+const { auth } = await import('./lib/auth');
+const response = await auth.api.signUpEmail({
+  body: {
+    name: 'Playwright Research User',
+    email,
+    password,
+    callbackURL: '/'
+  },
+  asResponse: true
+});
 
-  await page.goto('/auth/signup');
-  await page.locator('input[autocomplete="name"]').fill('Playwright Research User');
-  await page.locator('input[autocomplete="email"]').fill(email);
-  await page.locator('input[autocomplete="new-password"]').first().fill(PASSWORD);
-  await page.locator('input[autocomplete="new-password"]').nth(1).fill(PASSWORD);
-  await page.getByRole('button', { name: 'Create account' }).click();
+console.log(JSON.stringify({
+  status: response.status,
+  sessionCookie: response.headers.get('set-cookie')
+}));
+    `,
+    email,
+    PASSWORD
+  ], {
+    cwd: process.cwd(),
+    env: {
+      ...process.env,
+      DATABASE_URL: `file:${E2E_DATABASE_PATH}`,
+      BETTER_AUTH_BASE_URL: baseURL,
+      BETTER_AUTH_SECRET: 'playwright-e2e-secret-playwright-e2e-secret',
+      BETTER_AUTH_TRUSTED_ORIGINS: baseURL
+    },
+    encoding: 'utf8'
+  });
 
+  const { status, sessionCookie } = JSON.parse(output) as { status: number; sessionCookie: string | null };
+  expect(status).toBe(200);
+  expect(sessionCookie).toBeTruthy();
+
+  const [cookieNameValue] = sessionCookie!.split(';');
+  const separatorIndex = cookieNameValue!.indexOf('=');
+  const cookieName = cookieNameValue!.slice(0, separatorIndex);
+  const cookieValue = cookieNameValue!.slice(separatorIndex + 1);
+
+  await page.context().addCookies([{
+    name: cookieName,
+    value: cookieValue,
+    url: baseURL,
+    httpOnly: true,
+    sameSite: 'Lax'
+  }]);
+
+  await page.goto('/');
   await expect(page).toHaveURL(/\/$/);
   return email;
 }
@@ -109,7 +154,9 @@ finally:
 }
 
 test('supports the core coverage-to-research workflow', async ({ page }, testInfo) => {
+  test.slow();
   const accessionNumber = `0001045810-26-${String(Date.now()).slice(-6)}`;
+  const uploadFixture = join(process.cwd(), 'e2e', 'fixtures', 'sample-research.txt');
   await signUp(page, testInfo);
 
   seedFiling({
@@ -139,30 +186,61 @@ test('supports the core coverage-to-research workflow', async ({ page }, testInf
   await expect(page).toHaveURL(/\/analysis\?ticker=NVDA/);
   await expect(page.getByText('Coverage Workflow')).toBeVisible();
 
-  await page.getByLabel('Journal title').fill('Own-the-stack moat check');
-  await page.getByLabel('Journal body').fill('Monitor hyperscaler concentration, gross margin durability, and Blackwell shipment cadence.');
+  await page.getByRole('link', { name: 'Open research' }).click();
+  await expect(page).toHaveURL(/\/research\?ticker=NVDA/);
+  await page.getByLabel('Research note title').fill('Own-the-stack moat check');
+  await page.getByLabel('Research note summary').fill('Initial moat checkpoint');
+  await page.getByLabel('Research note body').fill('Monitor hyperscaler concentration, gross margin durability, and Blackwell shipment cadence.');
+  await page.getByLabel('Research note tags').fill('moat, thesis');
   await page.getByRole('button', { name: 'Save note' }).click();
-  await expect(page.getByText('Own-the-stack moat check')).toBeVisible();
+  await expect(page.getByText('Saved note to the research library.')).toBeVisible();
 
+  await page.getByLabel('Upload title').fill('Supply-chain diligence');
+  await page.getByLabel('Upload summary').fill('Vendor and channel-check notes');
+  await page.getByLabel('Upload tags').fill('diligence, channel-check');
+  await page.getByLabel('Upload file').setInputFiles(uploadFixture);
+  await page.locator('button', { hasText: 'Upload file' }).click();
+  await expect(page.getByText('Uploaded research file.')).toBeVisible();
+
+  await page.goto(`/analysis?ticker=NVDA`);
   await page.getByRole('link', { name: 'Open summary' }).first().click();
   await expect(page).toHaveURL(/\/analysis\/reports\/NVDA\//);
-  await page.getByRole('button', { name: 'Add to journal' }).click();
-  await expect(page.getByText('Saved to the company research journal.')).toBeVisible();
+  await page.getByRole('button', { name: 'Save to library' }).click();
+  await expect(page.getByText('Saved to the company research library.')).toBeVisible();
 
-  await page.getByRole('link', { name: 'Back to analysis' }).click();
+  await page.goto('/research?ticker=NVDA');
+  await page.waitForLoadState('networkidle');
+  await expect(page).toHaveURL(/\/research\?ticker=NVDA/);
+  await expect(page.getByRole('heading', { name: '10-K AI memo' }).first()).toBeVisible();
+
+  await page.getByLabel('Memo rating').selectOption('buy');
+  await page.getByLabel('Memo conviction').selectOption('high');
+  await page.getByLabel('Memo time horizon').fill('24');
+  await page.getByLabel('Packet title').fill('NVIDIA buy-side packet');
+  await page.getByLabel('Packet subtitle').fill('AI infrastructure compounder');
+  await page.getByLabel('Memo Thesis').fill('Maintain a constructive stance as datacenter demand and platform depth widen the moat.');
+  await page.getByLabel('Memo Catalysts').fill('Blackwell ramp, enterprise inference demand, and sustained operating leverage.');
+  await page.getByLabel('Memo Risks').fill('Customer concentration, competition, and execution on supply.');
+  await page.getByRole('button', { name: 'Save memo' }).click();
+  await expect(page.getByText('Saved investment memo.')).toBeVisible();
+
+  await page.getByRole('button', { name: 'Attach' }).first().click();
+  await expect(page.getByText('Attached evidence to Thesis.')).toBeVisible();
+
+  await page.goto('/analysis?ticker=NVDA');
   await expect(page).toHaveURL(/\/analysis\?ticker=NVDA/);
-  await expect(page.getByText('10-K AI memo')).toBeVisible();
 
-  await page.getByRole('link', { name: 'Open financials' }).click();
+  await page.goto('/financials?ticker=NVDA');
   await expect(page).toHaveURL(/\/financials\?ticker=NVDA/);
 
-  await page.getByRole('link', { name: 'Filings' }).first().click();
+  await page.goto('/filings?ticker=NVDA');
   await expect(page).toHaveURL(/\/filings\?ticker=NVDA/);
   await expect(page.getByRole('cell', { name: 'NVIDIA Corporation' })).toBeVisible();
-  await expect(page.getByRole('button', { name: /journal/i }).first()).toBeVisible();
+  await expect(page.getByRole('link', { name: 'Summary' }).first()).toBeVisible();
 });
 
 test('supports add, edit, and delete holding flows with summary refresh', async ({ page }, testInfo) => {
+  test.slow();
   await signUp(page, testInfo);
 
   await page.goto('/portfolio');
diff --git a/hooks/use-link-prefetch.ts b/hooks/use-link-prefetch.ts
index c44f992..f91539e 100644
--- a/hooks/use-link-prefetch.ts
+++ b/hooks/use-link-prefetch.ts
@@ -3,6 +3,7 @@
 import { useQueryClient } from '@tanstack/react-query';
 import { useRouter } from 'next/navigation';
 import { useCallback } from 'react';
+import { buildGraphingHref } from '@/lib/graphing/catalog';
 import {
   aiReportQueryOptions,
   companyAnalysisQueryOptions,
@@ -12,6 +13,7 @@ import {
   latestPortfolioInsightQueryOptions,
   portfolioSummaryQueryOptions,
   recentTasksQueryOptions,
+  researchWorkspaceQueryOptions,
   watchlistQueryOptions
 } from '@/lib/query/options';
 
@@ -30,14 +32,19 @@ export function useLinkPrefetch() {
     }
 
     const analysisHref = `/analysis?ticker=${encodeURIComponent(normalizedTicker)}`;
+    const researchHref = `/research?ticker=${encodeURIComponent(normalizedTicker)}`;
     const filingsHref = `/filings?ticker=${encodeURIComponent(normalizedTicker)}`;
     const financialsHref = `/financials?ticker=${encodeURIComponent(normalizedTicker)}`;
+    const graphingHref = buildGraphingHref(normalizedTicker);
 
     router.prefetch(analysisHref);
+    router.prefetch(researchHref);
     router.prefetch(filingsHref);
     router.prefetch(financialsHref);
+    router.prefetch(graphingHref);
 
     void queryClient.prefetchQuery(companyAnalysisQueryOptions(normalizedTicker));
+    void queryClient.prefetchQuery(researchWorkspaceQueryOptions(normalizedTicker));
     void queryClient.prefetchQuery(companyFinancialStatementsQueryOptions({
       ticker: normalizedTicker,
       surfaceKind: 'income_statement',
diff --git a/lib/api.ts b/lib/api.ts
index 334b524..39b2f56 100644
--- a/lib/api.ts
+++ b/lib/api.ts
@@ -12,8 +12,19 @@ import type {
   Holding,
   PortfolioInsight,
   PortfolioSummary,
+  ResearchArtifact,
+  ResearchArtifactKind,
+  ResearchArtifactSource,
   ResearchJournalEntry,
   ResearchJournalEntryType,
+  ResearchLibraryResponse,
+  ResearchMemo,
+  ResearchMemoConviction,
+  ResearchMemoEvidenceLink,
+  ResearchMemoRating,
+  ResearchMemoSection,
+  ResearchPacket,
+  ResearchWorkspace,
   Task,
   TaskStatus,
   TaskTimeline,
@@ -105,7 +116,7 @@ async function unwrapData<T>(result: TreatyResult, fallback: string) {
 
 async function requestJson<T>(input: {
   path: string;
-  method?: 'GET' | 'POST' | 'PATCH' | 'DELETE';
+  method?: 'GET' | 'POST' | 'PATCH' | 'PUT' | 'DELETE';
   body?: unknown;
 }, fallback: string) {
   const response = await fetch(`${API_BASE}${input.path}`, {
@@ -206,6 +217,208 @@ export async function createResearchJournalEntry(input: {
   }, 'Unable to create journal entry');
 }
 
+export async function getResearchWorkspace(ticker: string) {
+  return await requestJson<{ workspace: ResearchWorkspace }>({
+    path: `/api/research/workspace?ticker=${encodeURIComponent(ticker.trim().toUpperCase())}`
+  }, 'Unable to fetch research workspace');
+}
+
+export async function listResearchLibrary(input: {
+  ticker: string;
+  q?: string;
+  kind?: ResearchArtifactKind;
+  tag?: string;
+  source?: ResearchArtifactSource;
+  linkedToMemo?: boolean;
+  limit?: number;
+}) {
+  const params = new URLSearchParams({
+    ticker: input.ticker.trim().toUpperCase()
+  });
+
+  if (input.q?.trim()) {
+    params.set('q', input.q.trim());
+  }
+
+  if (input.kind) {
+    params.set('kind', input.kind);
+  }
+
+  if (input.tag?.trim()) {
+    params.set('tag', input.tag.trim());
+  }
+
+  if (input.source) {
+    params.set('source', input.source);
+  }
+
+  if (input.linkedToMemo !== undefined) {
+    params.set('linkedToMemo', input.linkedToMemo ? 'true' : 'false');
+  }
+
+  if (typeof input.limit === 'number') {
+    params.set('limit', String(input.limit));
+  }
+
+  return await requestJson<ResearchLibraryResponse>({
+    path: `/api/research/library?${params.toString()}`
+  }, 'Unable to fetch research library');
+}
+
+export async function createResearchArtifact(input: {
+  ticker: string;
+  accessionNumber?: string;
+  kind: ResearchArtifactKind;
+  source?: ResearchArtifactSource;
+  subtype?: string;
+  title?: string;
+  summary?: string;
+  bodyMarkdown?: string;
+  tags?: string[];
+  metadata?: Record<string, unknown>;
+}) {
+  return await requestJson<{ artifact: ResearchArtifact }>({
+    path: '/api/research/library',
+    method: 'POST',
+    body: {
+      ...input,
+      ticker: input.ticker.trim().toUpperCase()
+    }
+  }, 'Unable to create research artifact');
+}
+
+export async function updateResearchArtifact(id: number, input: {
+  title?: string;
+  summary?: string;
+  bodyMarkdown?: string;
+  tags?: string[];
+  metadata?: Record<string, unknown>;
+}) {
+  return await requestJson<{ artifact: ResearchArtifact }>({
+    path: `/api/research/library/${id}`,
+    method: 'PATCH',
+    body: input
+  }, 'Unable to update research artifact');
+}
+
+export async function deleteResearchArtifact(id: number) {
+  return await requestJson<{ success: boolean }>({
+    path: `/api/research/library/${id}`,
+    method: 'DELETE'
+  }, 'Unable to delete research artifact');
+}
+
+export async function uploadResearchArtifact(input: {
+  ticker: string;
+  file: File;
+  title?: string;
+  summary?: string;
+  tags?: string[];
+}) {
+  const form = new FormData();
+  form.set('ticker', input.ticker.trim().toUpperCase());
+  form.set('file', input.file);
+
+  if (input.title?.trim()) {
+    form.set('title', input.title.trim());
+  }
+
+  if (input.summary?.trim()) {
+    form.set('summary', input.summary.trim());
+  }
+
+  if (input.tags && input.tags.length > 0) {
+    form.set('tags', input.tags.join(','));
+  }
+
+  const response = await fetch(`${API_BASE}/api/research/library/upload`, {
+    method: 'POST',
+    credentials: 'include',
+    cache: 'no-store',
+    body: form
+  });
+
+  const payload = await response.json().catch(() => null);
+  if (!response.ok) {
+    throw new ApiError(
+      extractErrorMessage({ value: payload }, 'Unable to upload research file'),
+      response.status
+    );
+  }
+
+  if (!payload) {
+    throw new ApiError('Unable to upload research file', response.status);
+  }
+
+  return payload as { artifact: ResearchArtifact };
+}
+
+export function getResearchArtifactFileUrl(id: number) {
+  return `${API_BASE}/api/research/library/${id}/file`;
+}
+
+export async function getResearchMemo(ticker: string) {
+  return await requestJson<{ memo: ResearchMemo | null }>({
+    path: `/api/research/memo?ticker=${encodeURIComponent(ticker.trim().toUpperCase())}`
+  }, 'Unable to fetch research memo');
+}
+
+export async function upsertResearchMemo(input: {
+  ticker: string;
+  rating?: ResearchMemoRating | null;
+  conviction?: ResearchMemoConviction | null;
+  timeHorizonMonths?: number | null;
+  packetTitle?: string;
+  packetSubtitle?: string;
+  thesisMarkdown?: string;
+  variantViewMarkdown?: string;
+  catalystsMarkdown?: string;
+  risksMarkdown?: string;
+  disconfirmingEvidenceMarkdown?: string;
+  nextActionsMarkdown?: string;
+}) {
+  return await requestJson<{ memo: ResearchMemo }>({
+    path: '/api/research/memo',
+    method: 'PUT',
+    body: {
+      ...input,
+      ticker: input.ticker.trim().toUpperCase()
+    }
+  }, 'Unable to save research memo');
+}
+
+export async function addResearchMemoEvidence(input: {
+  memoId: number;
+  artifactId: number;
+  section: ResearchMemoSection;
+  annotation?: string;
+  sortOrder?: number;
+}) {
+  return await requestJson<{ evidence: ResearchMemoEvidenceLink[] }>({
+    path: `/api/research/memo/${input.memoId}/evidence`,
+    method: 'POST',
+    body: {
+      artifactId: input.artifactId,
+      section: input.section,
+      annotation: input.annotation,
+      sortOrder: input.sortOrder
+    }
+  }, 'Unable to attach memo evidence');
+}
+
+export async function deleteResearchMemoEvidence(memoId: number, linkId: number) {
+  return await requestJson<{ success: boolean }>({
+    path: `/api/research/memo/${memoId}/evidence/${linkId}`,
+    method: 'DELETE'
+  }, 'Unable to delete memo evidence');
+}
+
+export async function getResearchPacket(ticker: string) {
+  return await requestJson<{ packet: ResearchPacket }>({
+    path: `/api/research/packet?ticker=${encodeURIComponent(ticker.trim().toUpperCase())}`
+  }, 'Unable to fetch research packet');
+}
+
 export async function updateResearchJournalEntry(id: number, input: {
   title?: string;
   bodyMarkdown?: string;
diff --git a/lib/financial-metrics.ts b/lib/financial-metrics.ts
new file mode 100644
index 0000000..a82937b
--- /dev/null
+++ b/lib/financial-metrics.ts
@@ -0,0 +1,147 @@
+import type {
+  FinancialCadence,
+  FinancialSurfaceKind,
+  FinancialUnit,
+  RatioRow
+} from '@/lib/types';
+
+export type GraphableFinancialSurfaceKind = Extract<
+  FinancialSurfaceKind,
+  'income_statement' | 'balance_sheet' | 'cash_flow_statement' | 'ratios'
+>;
+
+export type StatementMetricDefinition = {
+  key: string;
+  label: string;
+  category: string;
+  order: number;
+  unit: FinancialUnit;
+  localNames?: readonly string[];
+  labelIncludes?: readonly string[];
+};
+
+export type RatioMetricDefinition = {
+  key: string;
+  label: string;
+  category: string;
+  order: number;
+  unit: RatioRow['unit'];
+  denominatorKey: string | null;
+  supportedCadences?: readonly FinancialCadence[];
+};
+
+export const GRAPHABLE_FINANCIAL_SURFACES: readonly GraphableFinancialSurfaceKind[] = [
+  'income_statement',
+  'balance_sheet',
+  'cash_flow_statement',
+  'ratios'
+] as const;
+
+export const INCOME_STATEMENT_METRIC_DEFINITIONS: StatementMetricDefinition[] = [
+  { key: 'revenue', label: 'Revenue', category: 'revenue', order: 10, unit: 'currency', localNames: ['RevenueFromContractWithCustomerExcludingAssessedTax', 'Revenues', 'SalesRevenueNet', 'TotalRevenuesAndOtherIncome'], labelIncludes: ['revenue', 'sales'] },
+  { key: 'cost_of_revenue', label: 'Cost of Revenue', category: 'expense', order: 20, unit: 'currency', localNames: ['CostOfRevenue', 'CostOfGoodsSold', 'CostOfSales', 'CostOfProductsSold', 'CostOfServices'], labelIncludes: ['cost of revenue', 'cost of sales', 'cost of goods sold'] },
+  { key: 'gross_profit', label: 'Gross Profit', category: 'profit', order: 30, unit: 'currency', localNames: ['GrossProfit'] },
+  { key: 'gross_margin', label: 'Gross Margin', category: 'margin', order: 40, unit: 'percent', labelIncludes: ['gross margin'] },
+  { key: 'research_and_development', label: 'Research & Development', category: 'opex', order: 50, unit: 'currency', localNames: ['ResearchAndDevelopmentExpense'], labelIncludes: ['research and development'] },
+  { key: 'sales_and_marketing', label: 'Sales & Marketing', category: 'opex', order: 60, unit: 'currency', localNames: ['SellingAndMarketingExpense'], labelIncludes: ['sales and marketing', 'selling and marketing'] },
+  { key: 'general_and_administrative', label: 'General & Administrative', category: 'opex', order: 70, unit: 'currency', localNames: ['GeneralAndAdministrativeExpense'], labelIncludes: ['general and administrative'] },
+  { key: 'selling_general_and_administrative', label: 'Selling, General & Administrative', category: 'opex', order: 80, unit: 'currency', localNames: ['SellingGeneralAndAdministrativeExpense'], labelIncludes: ['selling, general', 'selling general'] },
+  { key: 'operating_income', label: 'Operating Income', category: 'profit', order: 90, unit: 'currency', localNames: ['OperatingIncomeLoss', 'IncomeLossFromOperations'], labelIncludes: ['operating income'] },
+  { key: 'operating_margin', label: 'Operating Margin', category: 'margin', order: 100, unit: 'percent', labelIncludes: ['operating margin'] },
+  { key: 'interest_income', label: 'Interest Income', category: 'non_operating', order: 110, unit: 'currency', localNames: ['InterestIncomeExpenseNonoperatingNet', 'InterestIncomeOther', 'InvestmentIncomeInterest'], labelIncludes: ['interest income'] },
+  { key: 'interest_expense', label: 'Interest Expense', category: 'non_operating', order: 120, unit: 'currency', localNames: ['InterestExpense', 'InterestAndDebtExpense'], labelIncludes: ['interest expense'] },
+  { key: 'other_non_operating_income', label: 'Other Non-Operating Income', category: 'non_operating', order: 130, unit: 'currency', localNames: ['OtherNonoperatingIncomeExpense', 'NonoperatingIncomeExpense'], labelIncludes: ['other non-operating', 'non-operating income'] },
+  { key: 'pretax_income', label: 'Pretax Income', category: 'profit', order: 140, unit: 'currency', localNames: ['IncomeBeforeTaxExpenseBenefit', 'PretaxIncome'], labelIncludes: ['income before taxes', 'pretax income'] },
+  { key: 'income_tax_expense', label: 'Income Tax Expense', category: 'tax', order: 150, unit: 'currency', localNames: ['IncomeTaxExpenseBenefit'], labelIncludes: ['income tax'] },
+  { key: 'effective_tax_rate', label: 'Effective Tax Rate', category: 'tax', order: 160, unit: 'percent', labelIncludes: ['effective tax rate'] },
+  { key: 'net_income', label: 'Net Income', category: 'profit', order: 170, unit: 'currency', localNames: ['NetIncomeLoss', 'ProfitLoss'], labelIncludes: ['net income'] },
+  { key: 'diluted_eps', label: 'Diluted EPS', category: 'per_share', order: 180, unit: 'currency', localNames: ['EarningsPerShareDiluted', 'DilutedEarningsPerShare'], labelIncludes: ['diluted eps', 'diluted earnings per share'] },
+  { key: 'basic_eps', label: 'Basic EPS', category: 'per_share', order: 190, unit: 'currency', localNames: ['EarningsPerShareBasic', 'BasicEarningsPerShare'], labelIncludes: ['basic eps', 'basic earnings per share'] },
+  { key: 'diluted_shares', label: 'Diluted Shares', category: 'shares', order: 200, unit: 'shares', localNames: ['WeightedAverageNumberOfDilutedSharesOutstanding', 'WeightedAverageNumberOfShareOutstandingDiluted'], labelIncludes: ['diluted shares', 'weighted average diluted'] },
+  { key: 'basic_shares', label: 'Basic Shares', category: 'shares', order: 210, unit: 'shares', localNames: ['WeightedAverageNumberOfSharesOutstandingBasic', 'WeightedAverageNumberOfShareOutstandingBasicAndDiluted'], labelIncludes: ['basic shares', 'weighted average basic'] },
+  { key: 'depreciation_and_amortization', label: 'Depreciation & Amortization', category: 'non_cash', order: 220, unit: 'currency', localNames: ['DepreciationDepletionAndAmortization', 'DepreciationAmortizationAndAccretionNet', 'DepreciationAndAmortization'], labelIncludes: ['depreciation', 'amortization'] },
+  { key: 'ebitda', label: 'EBITDA', category: 'profit', order: 230, unit: 'currency', localNames: ['OperatingIncomeLoss'], labelIncludes: ['ebitda'] },
+  { key: 'stock_based_compensation', label: 'Stock-Based Compensation', category: 'non_cash', order: 240, unit: 'currency', localNames: ['ShareBasedCompensation', 'AllocatedShareBasedCompensationExpense'], labelIncludes: ['stock-based compensation', 'share-based compensation'] }
+] as const satisfies StatementMetricDefinition[];
+
+export const BALANCE_SHEET_METRIC_DEFINITIONS: StatementMetricDefinition[] = [
+  { key: 'cash_and_equivalents', label: 'Cash & Equivalents', category: 'asset', order: 10, unit: 'currency', localNames: ['CashAndCashEquivalentsAtCarryingValue', 'CashCashEquivalentsAndShortTermInvestments', 'CashAndShortTermInvestments'], labelIncludes: ['cash and cash equivalents'] },
+  { key: 'short_term_investments', label: 'Short-Term Investments', category: 'asset', order: 20, unit: 'currency', localNames: ['AvailableForSaleSecuritiesCurrent', 'ShortTermInvestments'], labelIncludes: ['short-term investments', 'marketable securities'] },
+  { key: 'accounts_receivable', label: 'Accounts Receivable', category: 'asset', order: 30, unit: 'currency', localNames: ['AccountsReceivableNetCurrent', 'ReceivablesNetCurrent'], labelIncludes: ['accounts receivable'] },
+  { key: 'inventory', label: 'Inventory', category: 'asset', order: 40, unit: 'currency', localNames: ['InventoryNet'], labelIncludes: ['inventory'] },
+  { key: 'other_current_assets', label: 'Other Current Assets', category: 'asset', order: 50, unit: 'currency', localNames: ['OtherAssetsCurrent'], labelIncludes: ['other current assets'] },
+  { key: 'current_assets', label: 'Current Assets', category: 'asset', order: 60, unit: 'currency', localNames: ['AssetsCurrent'], labelIncludes: ['current assets'] },
+  { key: 'property_plant_equipment', label: 'Property, Plant & Equipment', category: 'asset', order: 70, unit: 'currency', localNames: ['PropertyPlantAndEquipmentNet'], labelIncludes: ['property, plant and equipment', 'property and equipment'] },
+  { key: 'goodwill', label: 'Goodwill', category: 'asset', order: 80, unit: 'currency', localNames: ['Goodwill'], labelIncludes: ['goodwill'] },
+  { key: 'intangible_assets', label: 'Intangible Assets', category: 'asset', order: 90, unit: 'currency', localNames: ['FiniteLivedIntangibleAssetsNet', 'IndefiniteLivedIntangibleAssetsExcludingGoodwill', 'IntangibleAssetsNetExcludingGoodwill'], labelIncludes: ['intangible assets'] },
+  { key: 'total_assets', label: 'Total Assets', category: 'asset', order: 100, unit: 'currency', localNames: ['Assets'], labelIncludes: ['total assets'] },
+  { key: 'accounts_payable', label: 'Accounts Payable', category: 'liability', order: 110, unit: 'currency', localNames: ['AccountsPayableCurrent'], labelIncludes: ['accounts payable'] },
+  { key: 'accrued_liabilities', label: 'Accrued Liabilities', category: 'liability', order: 120, unit: 'currency', localNames: ['AccruedLiabilitiesCurrent'], labelIncludes: ['accrued liabilities'] },
+  { key: 'deferred_revenue_current', label: 'Deferred Revenue, Current', category: 'liability', order: 130, unit: 'currency', localNames: ['ContractWithCustomerLiabilityCurrent', 'DeferredRevenueCurrent'], labelIncludes: ['deferred revenue current', 'current deferred revenue'] },
+  { key: 'current_liabilities', label: 'Current Liabilities', category: 'liability', order: 140, unit: 'currency', localNames: ['LiabilitiesCurrent'], labelIncludes: ['current liabilities'] },
+  { key: 'long_term_debt', label: 'Long-Term Debt', category: 'liability', order: 150, unit: 'currency', localNames: ['LongTermDebtNoncurrent', 'LongTermDebt', 'DebtNoncurrent', 'LongTermDebtAndCapitalLeaseObligations'], labelIncludes: ['long-term debt'] },
+  { key: 'current_debt', label: 'Current Debt', category: 'liability', order: 160, unit: 'currency', localNames: ['DebtCurrent', 'ShortTermBorrowings', 'LongTermDebtCurrent'], labelIncludes: ['current debt', 'short-term debt'] },
+  { key: 'lease_liabilities', label: 'Lease Liabilities', category: 'liability', order: 170, unit: 'currency', localNames: ['OperatingLeaseLiabilityNoncurrent', 'FinanceLeaseLiabilityNoncurrent', 'LesseeOperatingLeaseLiability'], labelIncludes: ['lease liabilities'] },
+  { key: 'total_debt', label: 'Total Debt', category: 'liability', order: 180, unit: 'currency', localNames: ['DebtAndFinanceLeaseLiabilities', 'Debt'], labelIncludes: ['total debt'] },
+  { key: 'deferred_revenue_noncurrent', label: 'Deferred Revenue, Noncurrent', category: 'liability', order: 190, unit: 'currency', localNames: ['ContractWithCustomerLiabilityNoncurrent', 'DeferredRevenueNoncurrent'], labelIncludes: ['deferred revenue noncurrent'] },
+  { key: 'total_liabilities', label: 'Total Liabilities', category: 'liability', order: 200, unit: 'currency', localNames: ['Liabilities'], labelIncludes: ['total liabilities'] },
+  { key: 'retained_earnings', label: 'Retained Earnings', category: 'equity', order: 210, unit: 'currency', localNames: ['RetainedEarningsAccumulatedDeficit'], labelIncludes: ['retained earnings', 'accumulated deficit'] },
+  { key: 'total_equity', label: 'Total Equity', category: 'equity', order: 220, unit: 'currency', localNames: ['StockholdersEquity', 'StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest', 'PartnersCapital'], labelIncludes: ['total equity', 'stockholders’ equity', 'stockholders equity'] },
+  { key: 'net_cash_position', label: 'Net Cash Position', category: 'liquidity', order: 230, unit: 'currency', labelIncludes: ['net cash position'] }
+] as const satisfies StatementMetricDefinition[];
+
+export const CASH_FLOW_STATEMENT_METRIC_DEFINITIONS: StatementMetricDefinition[] = [
+  { key: 'operating_cash_flow', label: 'Operating Cash Flow', category: 'cash_flow', order: 10, unit: 'currency', localNames: ['NetCashProvidedByUsedInOperatingActivities', 'NetCashProvidedByUsedInOperatingActivitiesContinuingOperations'], labelIncludes: ['operating cash flow'] },
+  { key: 'capital_expenditures', label: 'Capital Expenditures', category: 'cash_flow', order: 20, unit: 'currency', localNames: ['PaymentsToAcquirePropertyPlantAndEquipment', 'CapitalExpendituresIncurredButNotYetPaid'], labelIncludes: ['capital expenditures', 'capital expenditure'] },
+  { key: 'free_cash_flow', label: 'Free Cash Flow', category: 'cash_flow', order: 30, unit: 'currency', labelIncludes: ['free cash flow'] },
+  { key: 'stock_based_compensation', label: 'Stock-Based Compensation', category: 'non_cash', order: 40, unit: 'currency', localNames: ['ShareBasedCompensation', 'AllocatedShareBasedCompensationExpense'], labelIncludes: ['stock-based compensation', 'share-based compensation'] },
+  { key: 'acquisitions', label: 'Acquisitions', category: 'investing', order: 50, unit: 'currency', localNames: ['PaymentsToAcquireBusinessesNetOfCashAcquired'], labelIncludes: ['acquisitions'] },
+  { key: 'share_repurchases', label: 'Share Repurchases', category: 'financing', order: 60, unit: 'currency', localNames: ['PaymentsForRepurchaseOfCommonStock', 'PaymentsForRepurchaseOfEquity'], labelIncludes: ['share repurchases', 'repurchase of common stock'] },
+  { key: 'dividends_paid', label: 'Dividends Paid', category: 'financing', order: 70, unit: 'currency', localNames: ['PaymentsOfDividends', 'PaymentsOfDividendsCommonStock'], labelIncludes: ['dividends paid'] },
+  { key: 'debt_issued', label: 'Debt Issued', category: 'financing', order: 80, unit: 'currency', localNames: ['ProceedsFromIssuanceOfLongTermDebt'], labelIncludes: ['debt issued'] },
+  { key: 'debt_repaid', label: 'Debt Repaid', category: 'financing', order: 90, unit: 'currency', localNames: ['RepaymentsOfLongTermDebt', 'RepaymentsOfDebt'], labelIncludes: ['debt repaid', 'repayment of debt'] }
+] as const satisfies StatementMetricDefinition[];
+
+export const RATIO_DEFINITIONS: RatioMetricDefinition[] = [
+  { key: 'gross_margin', label: 'Gross Margin', category: 'margins', order: 10, unit: 'percent', denominatorKey: 'revenue' },
+  { key: 'operating_margin', label: 'Operating Margin', category: 'margins', order: 20, unit: 'percent', denominatorKey: 'revenue' },
+  { key: 'ebitda_margin', label: 'EBITDA Margin', category: 'margins', order: 30, unit: 'percent', denominatorKey: 'revenue' },
+  { key: 'net_margin', label: 'Net Margin', category: 'margins', order: 40, unit: 'percent', denominatorKey: 'revenue' },
+  { key: 'fcf_margin', label: 'FCF Margin', category: 'margins', order: 50, unit: 'percent', denominatorKey: 'revenue' },
+  { key: 'roa', label: 'ROA', category: 'returns', order: 60, unit: 'percent', denominatorKey: 'total_assets' },
+  { key: 'roe', label: 'ROE', category: 'returns', order: 70, unit: 'percent', denominatorKey: 'total_equity' },
+  { key: 'roic', label: 'ROIC', category: 'returns', order: 80, unit: 'percent', denominatorKey: 'average_invested_capital' },
+  { key: 'roce', label: 'ROCE', category: 'returns', order: 90, unit: 'percent', denominatorKey: 'average_capital_employed' },
+  { key: 'debt_to_equity', label: 'Debt to Equity', category: 'financial_health', order: 100, unit: 'ratio', denominatorKey: 'total_equity' },
+  { key: 'net_debt_to_ebitda', label: 'Net Debt to EBITDA', category: 'financial_health', order: 110, unit: 'ratio', denominatorKey: 'ebitda' },
+  { key: 'cash_to_debt', label: 'Cash to Debt', category: 'financial_health', order: 120, unit: 'ratio', denominatorKey: 'total_debt' },
+  { key: 'current_ratio', label: 'Current Ratio', category: 'financial_health', order: 130, unit: 'ratio', denominatorKey: 'current_liabilities' },
+  { key: 'revenue_per_share', label: 'Revenue per Share', category: 'per_share', order: 140, unit: 'currency', denominatorKey: 'diluted_shares' },
+  { key: 'fcf_per_share', label: 'FCF per Share', category: 'per_share', order: 150, unit: 'currency', denominatorKey: 'diluted_shares' },
+  { key: 'book_value_per_share', label: 'Book Value per Share', category: 'per_share', order: 160, unit: 'currency', denominatorKey: 'diluted_shares' },
+  { key: 'revenue_yoy', label: 'Revenue YoY', category: 'growth', order: 170, unit: 'percent', denominatorKey: 'revenue' },
+  { key: 'net_income_yoy', label: 'Net Income YoY', category: 'growth', order: 180, unit: 'percent', denominatorKey: 'net_income' },
+  { key: 'eps_yoy', label: 'EPS YoY', category: 'growth', order: 190, unit: 'percent', denominatorKey: 'diluted_eps' },
+  { key: 'fcf_yoy', label: 'FCF YoY', category: 'growth', order: 200, unit: 'percent', denominatorKey: 'free_cash_flow' },
+  { key: '3y_revenue_cagr', label: '3Y Revenue CAGR', category: 'growth', order: 210, unit: 'percent', denominatorKey: 'revenue', supportedCadences: ['annual'] },
+  { key: '5y_revenue_cagr', label: '5Y Revenue CAGR', category: 'growth', order: 220, unit: 'percent', denominatorKey: 'revenue', supportedCadences: ['annual'] },
+  { key: '3y_eps_cagr', label: '3Y EPS CAGR', category: 'growth', order: 230, unit: 'percent', denominatorKey: 'diluted_eps', supportedCadences: ['annual'] },
+  { key: '5y_eps_cagr', label: '5Y EPS CAGR', category: 'growth', order: 240, unit: 'percent', denominatorKey: 'diluted_eps', supportedCadences: ['annual'] },
+  { key: 'market_cap', label: 'Market Cap', category: 'valuation', order: 250, unit: 'currency', denominatorKey: null },
+  { key: 'enterprise_value', label: 'Enterprise Value', category: 'valuation', order: 260, unit: 'currency', denominatorKey: null },
+  { key: 'price_to_earnings', label: 'Price to Earnings', category: 'valuation', order: 270, unit: 'ratio', denominatorKey: 'diluted_eps' },
+  { key: 'price_to_fcf', label: 'Price to FCF', category: 'valuation', order: 280, unit: 'ratio', denominatorKey: 'free_cash_flow' },
+  { key: 'price_to_book', label: 'Price to Book', category: 'valuation', order: 290, unit: 'ratio', denominatorKey: 'total_equity' },
+  { key: 'ev_to_sales', label: 'EV to Sales', category: 'valuation', order: 300, unit: 'ratio', denominatorKey: 'revenue' },
+  { key: 'ev_to_ebitda', label: 'EV to EBITDA', category: 'valuation', order: 310, unit: 'ratio', denominatorKey: 'ebitda' },
+  { key: 'ev_to_fcf', label: 'EV to FCF', category: 'valuation', order: 320, unit: 'ratio', denominatorKey: 'free_cash_flow' }
+] as const satisfies RatioMetricDefinition[];
+
+export const RATIO_CATEGORY_ORDER = [
+  'margins',
+  'returns',
+  'financial_health',
+  'per_share',
+  'growth',
+  'valuation'
+] as const;
diff --git a/lib/graphing/catalog.test.ts b/lib/graphing/catalog.test.ts
new file mode 100644
index 0000000..7bee8ad
--- /dev/null
+++ b/lib/graphing/catalog.test.ts
@@ -0,0 +1,51 @@
+import { describe, expect, it } from 'bun:test';
+import {
+  DEFAULT_GRAPH_TICKERS,
+  buildGraphingHref,
+  metricsForSurfaceAndCadence,
+  normalizeGraphTickers,
+  parseGraphingParams
+} from '@/lib/graphing/catalog';
+
+describe('graphing catalog', () => {
+  it('normalizes compare set tickers with dedupe and max five', () => {
+    expect(normalizeGraphTickers(' msft, aapl, msft, nvda, amd, goog, meta ')).toEqual([
+      'MSFT',
+      'AAPL',
+      'NVDA',
+      'AMD',
+      'GOOG'
+    ]);
+  });
+
+  it('falls back to defaults when params are missing or invalid', () => {
+    const state = parseGraphingParams(new URLSearchParams('surface=invalid&metric=made_up&chart=nope'));
+
+    expect(state.tickers).toEqual([...DEFAULT_GRAPH_TICKERS]);
+    expect(state.surface).toBe('income_statement');
+    expect(state.metric).toBe('revenue');
+    expect(state.chart).toBe('line');
+    expect(state.scale).toBe('millions');
+  });
+
+  it('filters annual-only ratio metrics for non-annual views', () => {
+    const quarterlyMetricKeys = metricsForSurfaceAndCadence('ratios', 'quarterly').map((metric) => metric.key);
+
+    expect(quarterlyMetricKeys).not.toContain('3y_revenue_cagr');
+    expect(quarterlyMetricKeys).not.toContain('5y_eps_cagr');
+    expect(quarterlyMetricKeys).toContain('gross_margin');
+  });
+
+  it('replaces invalid metrics after surface and cadence normalization', () => {
+    const state = parseGraphingParams(new URLSearchParams('surface=ratios&cadence=quarterly&metric=5y_revenue_cagr&tickers=msft,aapl'));
+
+    expect(state.surface).toBe('ratios');
+    expect(state.cadence).toBe('quarterly');
+    expect(state.metric).toBe('gross_margin');
+    expect(state.tickers).toEqual(['MSFT', 'AAPL']);
+  });
+
+  it('builds graphing hrefs with the primary ticker leading the compare set', () => {
+    expect(buildGraphingHref('amd')).toContain('tickers=AMD%2CMSFT%2CAAPL%2CNVDA');
+  });
+});
diff --git a/lib/graphing/catalog.ts b/lib/graphing/catalog.ts
new file mode 100644
index 0000000..66ad4ea
--- /dev/null
+++ b/lib/graphing/catalog.ts
@@ -0,0 +1,238 @@
+import type {
+  FinancialCadence,
+  FinancialUnit,
+  NumberScaleUnit
+} from '@/lib/types';
+import {
+  BALANCE_SHEET_METRIC_DEFINITIONS,
+  CASH_FLOW_STATEMENT_METRIC_DEFINITIONS,
+  GRAPHABLE_FINANCIAL_SURFACES,
+  type GraphableFinancialSurfaceKind,
+  INCOME_STATEMENT_METRIC_DEFINITIONS,
+  RATIO_DEFINITIONS
+} from '@/lib/financial-metrics';
+
+type SearchParamsLike = {
+  get(name: string): string | null;
+};
+
+export type GraphChartKind = 'line' | 'bar';
+
+export type GraphMetricDefinition = {
+  surface: GraphableFinancialSurfaceKind;
+  key: string;
+  label: string;
+  category: string;
+  order: number;
+  unit: FinancialUnit;
+  supportedCadences: readonly FinancialCadence[];
+};
+
+export type GraphingUrlState = {
+  tickers: string[];
+  surface: GraphableFinancialSurfaceKind;
+  metric: string;
+  cadence: FinancialCadence;
+  chart: GraphChartKind;
+  scale: NumberScaleUnit;
+};
+
+export const DEFAULT_GRAPH_TICKERS = ['MSFT', 'AAPL', 'NVDA'] as const;
+export const DEFAULT_GRAPH_SURFACE: GraphableFinancialSurfaceKind = 'income_statement';
+export const DEFAULT_GRAPH_CADENCE: FinancialCadence = 'annual';
+export const DEFAULT_GRAPH_CHART: GraphChartKind = 'line';
+export const DEFAULT_GRAPH_SCALE: NumberScaleUnit = 'millions';
+
+export const GRAPH_SURFACE_LABELS: Record<GraphableFinancialSurfaceKind, string> = {
+  income_statement: 'Income Statement',
+  balance_sheet: 'Balance Sheet',
+  cash_flow_statement: 'Cash Flow Statement',
+  ratios: 'Ratios'
+};
+
+export const GRAPH_CADENCE_OPTIONS: Array<{ value: FinancialCadence; label: string }> = [
+  { value: 'annual', label: 'Annual' },
+  { value: 'quarterly', label: 'Quarterly' },
+  { value: 'ltm', label: 'LTM' }
+];
+
+export const GRAPH_CHART_OPTIONS: Array<{ value: GraphChartKind; label: string }> = [
+  { value: 'line', label: 'Line' },
+  { value: 'bar', label: 'Bar' }
+];
+
+export const GRAPH_SCALE_OPTIONS: Array<{ value: NumberScaleUnit; label: string }> = [
+  { value: 'thousands', label: 'Thousands (K)' },
+  { value: 'millions', label: 'Millions (M)' },
+  { value: 'billions', label: 'Billions (B)' }
+];
+
+function buildStatementMetrics(
+  surface: Extract<GraphableFinancialSurfaceKind, 'income_statement' | 'balance_sheet' | 'cash_flow_statement'>,
+  metrics: Array<{
+    key: string;
+    label: string;
+    category: string;
+    order: number;
+    unit: FinancialUnit;
+  }>
+) {
+  return metrics.map((metric) => ({
+    ...metric,
+    surface,
+    supportedCadences: ['annual', 'quarterly', 'ltm'] as const
+  })) satisfies GraphMetricDefinition[];
+}
+
+export const GRAPH_METRIC_CATALOG: Record<GraphableFinancialSurfaceKind, GraphMetricDefinition[]> = {
+  income_statement: buildStatementMetrics('income_statement', INCOME_STATEMENT_METRIC_DEFINITIONS),
+  balance_sheet: buildStatementMetrics('balance_sheet', BALANCE_SHEET_METRIC_DEFINITIONS),
+  cash_flow_statement: buildStatementMetrics('cash_flow_statement', CASH_FLOW_STATEMENT_METRIC_DEFINITIONS),
+  ratios: RATIO_DEFINITIONS.map((metric) => ({
+    surface: 'ratios',
+    key: metric.key,
+    label: metric.label,
+    category: metric.category,
+    order: metric.order,
+    unit: metric.unit,
+    supportedCadences: metric.supportedCadences ?? ['annual', 'quarterly', 'ltm']
+  }))
+};
+
+export const DEFAULT_GRAPH_METRIC_BY_SURFACE: Record<GraphableFinancialSurfaceKind, string> = {
+  income_statement: 'revenue',
+  balance_sheet: 'total_assets',
+  cash_flow_statement: 'free_cash_flow',
+  ratios: 'gross_margin'
+};
+
+export function normalizeGraphTickers(value: string | null | undefined) {
+  const raw = (value ?? '')
+    .split(',')
+    .map((entry) => entry.trim().toUpperCase())
+    .filter(Boolean);
+
+  const unique = new Set<string>();
+  for (const ticker of raw) {
+    unique.add(ticker);
+    if (unique.size >= 5) {
+      break;
+    }
+  }
+
+  return [...unique];
+}
+
+export function isGraphSurfaceKind(value: string | null | undefined): value is GraphableFinancialSurfaceKind {
+  return GRAPHABLE_FINANCIAL_SURFACES.includes(value as GraphableFinancialSurfaceKind);
+}
+
+export function isGraphCadence(value: string | null | undefined): value is FinancialCadence {
+  return value === 'annual' || value === 'quarterly' || value === 'ltm';
+}
+
+export function isGraphChartKind(value: string | null | undefined): value is GraphChartKind {
+  return value === 'line' || value === 'bar';
+}
+
+export function isNumberScaleUnit(value: string | null | undefined): value is NumberScaleUnit {
+  return value === 'thousands' || value === 'millions' || value === 'billions';
+}
+
+export function metricsForSurfaceAndCadence(
+  surface: GraphableFinancialSurfaceKind,
+  cadence: FinancialCadence
+) {
+  return GRAPH_METRIC_CATALOG[surface].filter((metric) => metric.supportedCadences.includes(cadence));
+}
+
+export function resolveGraphMetric(
+  surface: GraphableFinancialSurfaceKind,
+  cadence: FinancialCadence,
+  metric: string | null | undefined
+) {
+  const metrics = metricsForSurfaceAndCadence(surface, cadence);
+  const normalizedMetric = metric?.trim() ?? '';
+  const match = metrics.find((candidate) => candidate.key === normalizedMetric);
+
+  if (match) {
+    return match.key;
+  }
+
+  const surfaceDefault = metrics.find((candidate) => candidate.key === DEFAULT_GRAPH_METRIC_BY_SURFACE[surface]);
+  return surfaceDefault?.key ?? metrics[0]?.key ?? DEFAULT_GRAPH_METRIC_BY_SURFACE[surface];
+}
+
+export function getGraphMetricDefinition(
+  surface: GraphableFinancialSurfaceKind,
+  cadence: FinancialCadence,
+  metric: string
+) {
+  return metricsForSurfaceAndCadence(surface, cadence).find((candidate) => candidate.key === metric) ?? null;
+}
+
+export function defaultGraphingState(): GraphingUrlState {
+  return {
+    tickers: [...DEFAULT_GRAPH_TICKERS],
+    surface: DEFAULT_GRAPH_SURFACE,
+    metric: DEFAULT_GRAPH_METRIC_BY_SURFACE[DEFAULT_GRAPH_SURFACE],
+    cadence: DEFAULT_GRAPH_CADENCE,
+    chart: DEFAULT_GRAPH_CHART,
+    scale: DEFAULT_GRAPH_SCALE
+  };
+}
+
+export function parseGraphingParams(searchParams: SearchParamsLike): GraphingUrlState {
+  const tickers = normalizeGraphTickers(searchParams.get('tickers'));
+  const surface = isGraphSurfaceKind(searchParams.get('surface'))
+    ? searchParams.get('surface') as GraphableFinancialSurfaceKind
+    : DEFAULT_GRAPH_SURFACE;
+  const cadence = isGraphCadence(searchParams.get('cadence'))
+    ? searchParams.get('cadence') as FinancialCadence
+    : DEFAULT_GRAPH_CADENCE;
+  const metric = resolveGraphMetric(surface, cadence, searchParams.get('metric'));
+  const chart = isGraphChartKind(searchParams.get('chart'))
+    ? searchParams.get('chart') as GraphChartKind
+    : DEFAULT_GRAPH_CHART;
+  const scale = isNumberScaleUnit(searchParams.get('scale'))
+    ? searchParams.get('scale') as NumberScaleUnit
+    : DEFAULT_GRAPH_SCALE;
+
+  return {
+    tickers: tickers.length > 0 ? tickers : [...DEFAULT_GRAPH_TICKERS],
+    surface,
+    metric,
+    cadence,
+    chart,
+    scale
+  };
+}
+
+export function serializeGraphingParams(state: GraphingUrlState) {
+  const params = new URLSearchParams();
+  params.set('tickers', state.tickers.join(','));
+  params.set('surface', state.surface);
+  params.set('metric', state.metric);
+  params.set('cadence', state.cadence);
+  params.set('chart', state.chart);
+  params.set('scale', state.scale);
+  return params.toString();
+}
+
+export function withPrimaryGraphTicker(ticker: string | null | undefined) {
+  const normalized = ticker?.trim().toUpperCase() ?? '';
+  if (!normalized) {
+    return [...DEFAULT_GRAPH_TICKERS];
+  }
+
+  return normalizeGraphTickers([normalized, ...DEFAULT_GRAPH_TICKERS].join(','));
+}
+
+export function buildGraphingHref(primaryTicker?: string | null) {
+  const tickers = withPrimaryGraphTicker(primaryTicker);
+  const params = serializeGraphingParams({
+    ...defaultGraphingState(),
+    tickers
+  });
+  return `/graphing?${params}`;
+}
diff --git a/lib/graphing/series.test.ts b/lib/graphing/series.test.ts
new file mode 100644
index 0000000..3daf00e
--- /dev/null
+++ b/lib/graphing/series.test.ts
@@ -0,0 +1,225 @@
+import { describe, expect, it } from 'bun:test';
+import { buildGraphingComparisonData } from '@/lib/graphing/series';
+import type {
+  CompanyFinancialStatementsResponse,
+  FinancialStatementPeriod,
+  RatioRow,
+  StandardizedFinancialRow
+} from '@/lib/types';
+
+function createPeriod(input: {
+  id: string;
+  filingId: number;
+  filingDate: string;
+  periodEnd: string;
+  filingType?: '10-K' | '10-Q';
+}) {
+  return {
+    id: input.id,
+    filingId: input.filingId,
+    accessionNumber: `0000-${input.filingId}`,
+    filingDate: input.filingDate,
+    periodStart: '2025-01-01',
+    periodEnd: input.periodEnd,
+    filingType: input.filingType ?? '10-Q',
+    periodLabel: input.id
+  } satisfies FinancialStatementPeriod;
+}
+
+function createStatementRow(key: string, values: Record<string, number | null>, unit: StandardizedFinancialRow['unit'] = 'currency') {
+  return {
+    key,
+    label: key,
+    category: 'test',
+    order: 10,
+    unit,
+    values,
+    sourceConcepts: [key],
+    sourceRowKeys: [key],
+    sourceFactIds: [1],
+    formulaKey: null,
+    hasDimensions: false,
+    resolvedSourceRowKeys: Object.fromEntries(Object.keys(values).map((periodId) => [periodId, key]))
+  } satisfies StandardizedFinancialRow;
+}
+
+function createRatioRow(key: string, values: Record<string, number | null>, unit: RatioRow['unit'] = 'percent') {
+  return {
+    ...createStatementRow(key, values, unit),
+    denominatorKey: null
+  } satisfies RatioRow;
+}
+
+function createFinancials(input: {
+  ticker: string;
+  companyName: string;
+  periods: FinancialStatementPeriod[];
+  statementRows?: StandardizedFinancialRow[];
+  ratioRows?: RatioRow[];
+}) {
+  return {
+    company: {
+      ticker: input.ticker,
+      companyName: input.companyName,
+      cik: null
+    },
+    surfaceKind: 'income_statement',
+    cadence: 'annual',
+    displayModes: ['standardized'],
+    defaultDisplayMode: 'standardized',
+    periods: input.periods,
+    statementRows: {
+      faithful: [],
+      standardized: input.statementRows ?? []
+    },
+    ratioRows: input.ratioRows ?? [],
+    kpiRows: null,
+    trendSeries: [],
+    categories: [],
+    availability: {
+      adjusted: false,
+      customMetrics: false
+    },
+    nextCursor: null,
+    facts: null,
+    coverage: {
+      filings: input.periods.length,
+      rows: input.statementRows?.length ?? 0,
+      dimensions: 0,
+      facts: 0
+    },
+    dataSourceStatus: {
+      enabled: true,
+      hydratedFilings: input.periods.length,
+      partialFilings: 0,
+      failedFilings: 0,
+      pendingFilings: 0,
+      queuedSync: false
+    },
+    metrics: {
+      taxonomy: null,
+      validation: null
+    },
+    dimensionBreakdown: null
+  } satisfies CompanyFinancialStatementsResponse;
+}
+
+describe('graphing series', () => {
+  it('aligns multiple companies onto a union date axis', () => {
+    const data = buildGraphingComparisonData({
+      surface: 'income_statement',
+      metric: 'revenue',
+      results: [
+        {
+          ticker: 'MSFT',
+          financials: createFinancials({
+            ticker: 'MSFT',
+            companyName: 'Microsoft',
+            periods: [
+              createPeriod({ id: 'msft-q1', filingId: 1, filingDate: '2025-01-30', periodEnd: '2024-12-31' }),
+              createPeriod({ id: 'msft-q2', filingId: 2, filingDate: '2025-04-28', periodEnd: '2025-03-31' })
+            ],
+            statementRows: [createStatementRow('revenue', { 'msft-q1': 100, 'msft-q2': 120 })]
+          })
+        },
+        {
+          ticker: 'AAPL',
+          financials: createFinancials({
+            ticker: 'AAPL',
+            companyName: 'Apple',
+            periods: [
+              createPeriod({ id: 'aapl-q1', filingId: 3, filingDate: '2025-02-02', periodEnd: '2025-01-31' }),
+              createPeriod({ id: 'aapl-q2', filingId: 4, filingDate: '2025-04-30', periodEnd: '2025-03-31' })
+            ],
+            statementRows: [createStatementRow('revenue', { 'aapl-q1': 90, 'aapl-q2': 130 })]
+          })
+        }
+      ]
+    });
+
+    expect(data.chartData.map((entry) => entry.dateKey)).toEqual([
+      '2024-12-31',
+      '2025-01-31',
+      '2025-03-31'
+    ]);
+    expect(data.chartData[0]?.MSFT).toBe(100);
+    expect(data.chartData[0]?.AAPL).toBeNull();
+    expect(data.chartData[1]?.AAPL).toBe(90);
+  });
+
+  it('preserves partial failures without blanking the whole chart', () => {
+    const data = buildGraphingComparisonData({
+      surface: 'income_statement',
+      metric: 'revenue',
+      results: [
+        {
+          ticker: 'MSFT',
+          financials: createFinancials({
+            ticker: 'MSFT',
+            companyName: 'Microsoft',
+            periods: [createPeriod({ id: 'msft-q1', filingId: 1, filingDate: '2025-01-30', periodEnd: '2024-12-31' })],
+            statementRows: [createStatementRow('revenue', { 'msft-q1': 100 })]
+          })
+        },
+        {
+          ticker: 'FAIL',
+          error: 'Ticker not found'
+        }
+      ]
+    });
+
+    expect(data.hasAnyData).toBe(true);
+    expect(data.hasPartialData).toBe(true);
+    expect(data.latestRows.find((row) => row.ticker === 'FAIL')?.status).toBe('error');
+  });
+
+  it('marks companies with missing metric values as no metric data', () => {
+    const data = buildGraphingComparisonData({
+      surface: 'ratios',
+      metric: 'gross_margin',
+      results: [
+        {
+          ticker: 'NVDA',
+          financials: createFinancials({
+            ticker: 'NVDA',
+            companyName: 'NVIDIA',
+            periods: [createPeriod({ id: 'nvda-q1', filingId: 1, filingDate: '2025-01-30', periodEnd: '2024-12-31' })],
+            ratioRows: [createRatioRow('gross_margin', { 'nvda-q1': null })]
+          })
+        }
+      ]
+    });
+
+    expect(data.latestRows[0]?.status).toBe('no_metric_data');
+    expect(data.hasAnyData).toBe(false);
+  });
+
+  it('derives latest and prior values for the summary table', () => {
+    const data = buildGraphingComparisonData({
+      surface: 'income_statement',
+      metric: 'revenue',
+      results: [
+        {
+          ticker: 'AMD',
+          financials: createFinancials({
+            ticker: 'AMD',
+            companyName: 'AMD',
+            periods: [
+              createPeriod({ id: 'amd-q1', filingId: 1, filingDate: '2025-01-30', periodEnd: '2024-12-31' }),
+              createPeriod({ id: 'amd-q2', filingId: 2, filingDate: '2025-04-30', periodEnd: '2025-03-31' })
+            ],
+            statementRows: [createStatementRow('revenue', { 'amd-q1': 50, 'amd-q2': 70 })]
+          })
+        }
+      ]
+    });
+
+    expect(data.latestRows[0]).toMatchObject({
+      ticker: 'AMD',
+      latestValue: 70,
+      priorValue: 50,
+      changeValue: 20,
+      latestDateKey: '2025-03-31'
+    });
+  });
+});
diff --git a/lib/graphing/series.ts b/lib/graphing/series.ts
new file mode 100644
index 0000000..a1f3631
--- /dev/null
+++ b/lib/graphing/series.ts
@@ -0,0 +1,189 @@
+import type {
+  CompanyFinancialStatementsResponse,
+  FinancialUnit,
+  RatioRow,
+  StandardizedFinancialRow
+} from '@/lib/types';
+import type { GraphableFinancialSurfaceKind } from '@/lib/financial-metrics';
+
+type GraphingMetricRow = StandardizedFinancialRow | RatioRow;
+
+export type GraphingFetchResult = {
+  ticker: string;
+  financials?: CompanyFinancialStatementsResponse;
+  error?: string;
+};
+
+export type GraphingSeriesPoint = {
+  periodId: string;
+  dateKey: string;
+  filingType: '10-K' | '10-Q';
+  filingDate: string;
+  periodEnd: string | null;
+  periodLabel: string;
+  value: number | null;
+};
+
+export type GraphingCompanySeries = {
+  ticker: string;
+  companyName: string;
+  status: 'ready' | 'error' | 'no_metric_data';
+  errorMessage: string | null;
+  unit: FinancialUnit | null;
+  points: GraphingSeriesPoint[];
+  latestPoint: GraphingSeriesPoint | null;
+  priorPoint: GraphingSeriesPoint | null;
+};
+
+export type GraphingLatestValueRow = {
+  ticker: string;
+  companyName: string;
+  status: GraphingCompanySeries['status'];
+  errorMessage: string | null;
+  latestValue: number | null;
+  priorValue: number | null;
+  changeValue: number | null;
+  latestDateKey: string | null;
+  latestPeriodLabel: string | null;
+  latestFilingType: '10-K' | '10-Q' | null;
+};
+
+export type GraphingChartDatum = Record<string, unknown> & {
+  dateKey: string;
+  dateMs: number;
+};
+
+export type GraphingComparisonData = {
+  companies: GraphingCompanySeries[];
+  chartData: GraphingChartDatum[];
+  latestRows: GraphingLatestValueRow[];
+  hasAnyData: boolean;
+  hasPartialData: boolean;
+};
+
+function sortPeriods(left: { periodEnd: string | null; filingDate: string }, right: { periodEnd: string | null; filingDate: string }) {
+  return Date.parse(left.periodEnd ?? left.filingDate) - Date.parse(right.periodEnd ?? right.filingDate);
+}
+
+function extractMetricRow(
+  financials: CompanyFinancialStatementsResponse,
+  surface: GraphableFinancialSurfaceKind,
+  metric: string
+): GraphingMetricRow | null {
+  if (surface === 'ratios') {
+    return financials.ratioRows?.find((row) => row.key === metric) ?? null;
+  }
+
+  return financials.statementRows?.standardized.find((row) => row.key === metric) ?? null;
+}
+
+function extractCompanySeries(
+  result: GraphingFetchResult,
+  surface: GraphableFinancialSurfaceKind,
+  metric: string
+): GraphingCompanySeries {
+  if (result.error || !result.financials) {
+    return {
+      ticker: result.ticker,
+      companyName: result.ticker,
+      status: 'error',
+      errorMessage: result.error ?? 'Unable to load financial history',
+      unit: null,
+      points: [],
+      latestPoint: null,
+      priorPoint: null
+    };
+  }
+
+  const metricRow = extractMetricRow(result.financials, surface, metric);
+  const periods = [...result.financials.periods].sort(sortPeriods);
+  const points = periods.map((period) => ({
+    periodId: period.id,
+    dateKey: period.periodEnd ?? period.filingDate,
+    filingType: period.filingType,
+    filingDate: period.filingDate,
+    periodEnd: period.periodEnd,
+    periodLabel: period.periodLabel,
+    value: metricRow?.values[period.id] ?? null
+  }));
+  const populatedPoints = points.filter((point) => point.value !== null);
+  const latestPoint = populatedPoints[populatedPoints.length - 1] ?? null;
+  const priorPoint = populatedPoints.length > 1 ? populatedPoints[populatedPoints.length - 2] ?? null : null;
+
+  return {
+    ticker: result.financials.company.ticker,
+    companyName: result.financials.company.companyName,
+    status: latestPoint ? 'ready' : 'no_metric_data',
+    errorMessage: latestPoint ? null : 'No data available for the selected metric.',
+    unit: metricRow?.unit ?? null,
+    points,
+    latestPoint,
+    priorPoint
+  };
+}
+
+export function buildGraphingComparisonData(input: {
+  results: GraphingFetchResult[];
+  surface: GraphableFinancialSurfaceKind;
+  metric: string;
+}): GraphingComparisonData {
+  const companies = input.results.map((result) => extractCompanySeries(result, input.surface, input.metric));
+  const chartDatumByDate = new Map<string, GraphingChartDatum>();
+
+  for (const company of companies) {
+    for (const point of company.points) {
+      const dateMs = Date.parse(point.dateKey);
+      const existing = chartDatumByDate.get(point.dateKey) ?? {
+        dateKey: point.dateKey,
+        dateMs
+      };
+
+      existing[company.ticker] = point.value;
+      existing[`meta__${company.ticker}`] = point;
+      chartDatumByDate.set(point.dateKey, existing);
+    }
+  }
+
+  const chartData = [...chartDatumByDate.values()]
+    .sort((left, right) => left.dateMs - right.dateMs)
+    .map((datum) => {
+      for (const company of companies) {
+        if (!(company.ticker in datum)) {
+          datum[company.ticker] = null;
+        }
+      }
+
+      return datum;
+    });
+
+  const latestRows = companies.map((company) => ({
+    ticker: company.ticker,
+    companyName: company.companyName,
+    status: company.status,
+    errorMessage: company.errorMessage,
+    latestValue: company.latestPoint?.value ?? null,
+    priorValue: company.priorPoint?.value ?? null,
+    changeValue:
+      company.latestPoint?.value !== null
+      && company.latestPoint?.value !== undefined
+      && company.priorPoint?.value !== null
+      && company.priorPoint?.value !== undefined
+        ? company.latestPoint.value - company.priorPoint.value
+        : null,
+    latestDateKey: company.latestPoint?.dateKey ?? null,
+    latestPeriodLabel: company.latestPoint?.periodLabel ?? null,
+    latestFilingType: company.latestPoint?.filingType ?? null
+  }));
+
+  const hasAnyData = companies.some((company) => company.latestPoint !== null);
+  const hasPartialData = companies.some((company) => company.status !== 'ready')
+    || companies.some((company) => company.points.some((point) => point.value === null));
+
+  return {
+    companies,
+    chartData,
+    latestRows,
+    hasAnyData,
+    hasPartialData
+  };
+}
diff --git a/lib/query/keys.ts b/lib/query/keys.ts
index 331bec3..766d584 100644
--- a/lib/query/keys.ts
+++ b/lib/query/keys.ts
@@ -13,6 +13,18 @@ export const queryKeys = {
   ) => ['financials-v3', ticker, surfaceKind, cadence, includeDimensions ? 'dims' : 'no-dims', includeFacts ? 'facts' : 'rows', factsCursor ?? '', factsLimit, cursor ?? '', limit] as const,
   filings: (ticker: string | null, limit: number) => ['filings', ticker ?? '', limit] as const,
   report: (accessionNumber: string) => ['report', accessionNumber] as const,
+  researchWorkspace: (ticker: string) => ['research', 'workspace', ticker] as const,
+  researchLibrary: (
+    ticker: string,
+    q: string,
+    kind: string,
+    tag: string,
+    source: string,
+    linkedToMemo: string,
+    limit: number
+  ) => ['research', 'library', ticker, q, kind, tag, source, linkedToMemo, limit] as const,
+  researchMemo: (ticker: string) => ['research', 'memo', ticker] as const,
+  researchPacket: (ticker: string) => ['research', 'packet', ticker] as const,
   watchlist: () => ['watchlist'] as const,
   researchJournal: (ticker: string) => ['research', 'journal', ticker] as const,
   holdings: () => ['portfolio', 'holdings'] as const,
diff --git a/lib/query/options.ts b/lib/query/options.ts
index de861e0..7ac950c 100644
--- a/lib/query/options.ts
+++ b/lib/query/options.ts
@@ -5,9 +5,13 @@ import {
   getCompanyFinancialStatements,
   getLatestPortfolioInsight,
   getPortfolioSummary,
+  getResearchMemo,
+  getResearchPacket,
+  getResearchWorkspace,
   getTask,
   getTaskTimeline,
   listFilings,
+  listResearchLibrary,
   listHoldings,
   listRecentTasks,
   listResearchJournal,
@@ -16,7 +20,9 @@ import {
 import { queryKeys } from '@/lib/query/keys';
 import type {
   FinancialCadence,
-  FinancialSurfaceKind
+  FinancialSurfaceKind,
+  ResearchArtifactKind,
+  ResearchArtifactSource
 } from '@/lib/types';
 
 export function companyAnalysisQueryOptions(ticker: string) {
@@ -96,6 +102,68 @@ export function aiReportQueryOptions(accessionNumber: string) {
   });
 }
 
+export function researchWorkspaceQueryOptions(ticker: string) {
+  const normalizedTicker = ticker.trim().toUpperCase();
+
+  return queryOptions({
+    queryKey: queryKeys.researchWorkspace(normalizedTicker),
+    queryFn: () => getResearchWorkspace(normalizedTicker),
+    staleTime: 15_000
+  });
+}
+
+export function researchLibraryQueryOptions(input: {
+  ticker: string;
+  q?: string;
+  kind?: ResearchArtifactKind;
+  tag?: string;
+  source?: ResearchArtifactSource;
+  linkedToMemo?: boolean;
+  limit?: number;
+}) {
+  const normalizedTicker = input.ticker.trim().toUpperCase();
+  const q = input.q?.trim() ?? '';
+  const kind = input.kind ?? '';
+  const tag = input.tag?.trim() ?? '';
+  const source = input.source ?? '';
+  const linkedToMemo = input.linkedToMemo === undefined ? '' : input.linkedToMemo ? 'true' : 'false';
+  const limit = input.limit ?? 100;
+
+  return queryOptions({
+    queryKey: queryKeys.researchLibrary(normalizedTicker, q, kind, tag, source, linkedToMemo, limit),
+    queryFn: () => listResearchLibrary({
+      ticker: normalizedTicker,
+      q,
+      kind: input.kind,
+      tag,
+      source: input.source,
+      linkedToMemo: input.linkedToMemo,
+      limit
+    }),
+    staleTime: 10_000
+  });
+}
+
+export function researchMemoQueryOptions(ticker: string) {
+  const normalizedTicker = ticker.trim().toUpperCase();
+
+  return queryOptions({
+    queryKey: queryKeys.researchMemo(normalizedTicker),
+    queryFn: () => getResearchMemo(normalizedTicker),
+    staleTime: 10_000
+  });
+}
+
+export function researchPacketQueryOptions(ticker: string) {
+  const normalizedTicker = ticker.trim().toUpperCase();
+
+  return queryOptions({
+    queryKey: queryKeys.researchPacket(normalizedTicker),
+    queryFn: () => getResearchPacket(normalizedTicker),
+    staleTime: 10_000
+  });
+}
+
 export function watchlistQueryOptions() {
   return queryOptions({
     queryKey: queryKeys.watchlist(),
diff --git a/lib/server/api/app.ts b/lib/server/api/app.ts
index 7dbd73b..99bd2fa 100644
--- a/lib/server/api/app.ts
+++ b/lib/server/api/app.ts
@@ -7,7 +7,12 @@ import type {
   FinancialCadence,
   FinancialStatementKind,
   FinancialSurfaceKind,
+  ResearchArtifactKind,
+  ResearchArtifactSource,
   ResearchJournalEntryType,
+  ResearchMemoConviction,
+  ResearchMemoRating,
+  ResearchMemoSection,
   TaskStatus
 } from '@/lib/types';
 import { auth } from '@/lib/auth';
@@ -32,6 +37,22 @@ import {
   upsertHoldingRecord
 } from '@/lib/server/repos/holdings';
 import { getLatestPortfolioInsight } from '@/lib/server/repos/insights';
+import {
+  addResearchMemoEvidenceLink,
+  createAiReportArtifactFromAccession,
+  createFilingArtifactFromAccession,
+  createResearchArtifactRecord,
+  deleteResearchArtifactRecord,
+  deleteResearchMemoEvidenceLink,
+  getResearchArtifactFileResponse,
+  getResearchMemoByTicker,
+  getResearchPacket,
+  getResearchWorkspace,
+  listResearchArtifacts,
+  storeResearchUpload,
+  updateResearchArtifactRecord,
+  upsertResearchMemoRecord
+} from '@/lib/server/repos/research-library';
 import {
   createResearchJournalEntryRecord,
   deleteResearchJournalEntryRecord,
@@ -82,6 +103,18 @@ const FINANCIAL_SURFACES: FinancialSurfaceKind[] = [
 const COVERAGE_STATUSES: CoverageStatus[] = ['backlog', 'active', 'watch', 'archive'];
 const COVERAGE_PRIORITIES: CoveragePriority[] = ['low', 'medium', 'high'];
 const JOURNAL_ENTRY_TYPES: ResearchJournalEntryType[] = ['note', 'filing_note', 'status_change'];
+const RESEARCH_ARTIFACT_KINDS: ResearchArtifactKind[] = ['filing', 'ai_report', 'note', 'upload', 'memo_snapshot', 'status_change'];
+const RESEARCH_ARTIFACT_SOURCES: ResearchArtifactSource[] = ['system', 'user'];
+const RESEARCH_MEMO_RATINGS: ResearchMemoRating[] = ['strong_buy', 'buy', 'hold', 'sell'];
+const RESEARCH_MEMO_CONVICTIONS: ResearchMemoConviction[] = ['low', 'medium', 'high'];
+const RESEARCH_MEMO_SECTIONS: ResearchMemoSection[] = [
+  'thesis',
+  'variant_view',
+  'catalysts',
+  'risks',
+  'disconfirming_evidence',
+  'next_actions'
+];
 
 function asRecord(value: unknown): Record<string, unknown> {
   if (!value || typeof value !== 'object' || Array.isArray(value)) {
@@ -205,6 +238,44 @@ function asJournalEntryType(value: unknown) {
     : undefined;
 }
 
+function asResearchArtifactKind(value: unknown) {
+  return RESEARCH_ARTIFACT_KINDS.includes(value as ResearchArtifactKind)
+    ? value as ResearchArtifactKind
+    : undefined;
+}
+
+function asResearchArtifactSource(value: unknown) {
+  return RESEARCH_ARTIFACT_SOURCES.includes(value as ResearchArtifactSource)
+    ? value as ResearchArtifactSource
+    : undefined;
+}
+
+function asResearchMemoRating(value: unknown) {
+  if (value === null) {
+    return null;
+  }
+
+  return RESEARCH_MEMO_RATINGS.includes(value as ResearchMemoRating)
+    ? value as ResearchMemoRating
+    : undefined;
+}
+
+function asResearchMemoConviction(value: unknown) {
+  if (value === null) {
+    return null;
+  }
+
+  return RESEARCH_MEMO_CONVICTIONS.includes(value as ResearchMemoConviction)
+    ? value as ResearchMemoConviction
+    : undefined;
+}
+
+function asResearchMemoSection(value: unknown) {
+  return RESEARCH_MEMO_SECTIONS.includes(value as ResearchMemoSection)
+    ? value as ResearchMemoSection
+    : undefined;
+}
+
 function formatLabel(value: string) {
   return value
     .split('_')
@@ -212,6 +283,10 @@ function formatLabel(value: string) {
     .join(' ');
 }
 
+function normalizeTicker(value: unknown) {
+  return typeof value === 'string' ? value.trim().toUpperCase() : '';
+}
+
 function withFinancialMetricsPolicy(filing: Filing): Filing {
   if (FINANCIAL_FORMS.has(filing.filing_type)) {
     return filing;
@@ -707,6 +782,383 @@ export const app = new Elysia({ prefix: '/api' })
 
     return Response.json({ insight });
   })
+  .get('/research/workspace', async ({ query }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const ticker = typeof query.ticker === 'string' ? query.ticker.trim().toUpperCase() : '';
+    if (!ticker) {
+      return jsonError('ticker is required');
+    }
+
+    const workspace = await getResearchWorkspace(session.user.id, ticker);
+    return Response.json({ workspace });
+  }, {
+    query: t.Object({
+      ticker: t.String({ minLength: 1 })
+    })
+  })
+  .get('/research/library', async ({ query }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const ticker = typeof query.ticker === 'string' ? query.ticker.trim().toUpperCase() : '';
+    if (!ticker) {
+      return jsonError('ticker is required');
+    }
+
+    const linkedToMemo = query.linkedToMemo === undefined
+      ? null
+      : asBoolean(query.linkedToMemo, false);
+
+    const library = await listResearchArtifacts(session.user.id, {
+      ticker,
+      q: asOptionalString(query.q),
+      kind: asResearchArtifactKind(query.kind) ?? null,
+      tag: asOptionalString(query.tag),
+      source: asResearchArtifactSource(query.source) ?? null,
+      linkedToMemo,
+      limit: typeof query.limit === 'number' ? query.limit : Number(query.limit ?? 100)
+    });
+
+    return Response.json(library);
+  }, {
+    query: t.Object({
+      ticker: t.String({ minLength: 1 }),
+      q: t.Optional(t.String()),
+      kind: t.Optional(t.String()),
+      tag: t.Optional(t.String()),
+      source: t.Optional(t.String()),
+      linkedToMemo: t.Optional(t.String()),
+      limit: t.Optional(t.Numeric())
+    })
+  })
+  .post('/research/library', async ({ body }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const payload = asRecord(body);
+    const ticker = typeof payload.ticker === 'string' ? payload.ticker.trim().toUpperCase() : '';
+    const kind = asResearchArtifactKind(payload.kind);
+    const source = asResearchArtifactSource(payload.source);
+    const title = asOptionalString(payload.title);
+    const summary = asOptionalString(payload.summary);
+    const bodyMarkdown = asOptionalString(payload.bodyMarkdown);
+
+    if (!ticker) {
+      return jsonError('ticker is required');
+    }
+
+    if (!kind) {
+      return jsonError('kind is required');
+    }
+
+    if (kind === 'upload') {
+      return jsonError('Use /api/research/library/upload for file uploads');
+    }
+
+    if (!title && !summary && !bodyMarkdown) {
+      return jsonError('title, summary, or bodyMarkdown is required');
+    }
+
+    try {
+      const artifact = await createResearchArtifactRecord({
+        userId: session.user.id,
+        ticker,
+        accessionNumber: asOptionalString(payload.accessionNumber),
+        kind,
+        source: source ?? 'user',
+        subtype: asOptionalString(payload.subtype),
+        title,
+        summary,
+        bodyMarkdown,
+        tags: asTags(payload.tags),
+        metadata: asOptionalRecord(payload.metadata)
+      });
+
+      await updateWatchlistReviewByTicker(session.user.id, ticker, artifact.updated_at);
+
+      return Response.json({ artifact });
+    } catch (error) {
+      return jsonError(asErrorMessage(error, 'Failed to create research artifact'));
+    }
+  })
+  .post('/research/library/upload', async ({ request }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    try {
+      const form = await request.formData();
+      const ticker = normalizeTicker(String(form.get('ticker') ?? ''));
+      const title = asOptionalString(String(form.get('title') ?? ''));
+      const summary = asOptionalString(String(form.get('summary') ?? ''));
+      const tags = asTags(String(form.get('tags') ?? ''));
+      const file = form.get('file');
+
+      if (!ticker) {
+        return jsonError('ticker is required');
+      }
+
+      if (!(file instanceof File)) {
+        return jsonError('file is required');
+      }
+
+      const artifact = await storeResearchUpload({
+        userId: session.user.id,
+        ticker,
+        file,
+        title,
+        summary,
+        tags
+      });
+
+      return Response.json({ artifact });
+    } catch (error) {
+      return jsonError(asErrorMessage(error, 'Failed to upload research file'));
+    }
+  })
+  .patch('/research/library/:id', async ({ params, body }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const numericId = Number(params.id);
+    if (!Number.isInteger(numericId) || numericId <= 0) {
+      return jsonError('Invalid artifact id', 400);
+    }
+
+    const payload = asRecord(body);
+
+    try {
+      const artifact = await updateResearchArtifactRecord({
+        userId: session.user.id,
+        id: numericId,
+        title: payload.title === undefined ? undefined : asOptionalString(payload.title),
+        summary: payload.summary === undefined ? undefined : asOptionalString(payload.summary),
+        bodyMarkdown: payload.bodyMarkdown === undefined
+          ? undefined
+          : (typeof payload.bodyMarkdown === 'string' ? payload.bodyMarkdown : ''),
+        tags: payload.tags === undefined ? undefined : asTags(payload.tags),
+        metadata: payload.metadata === undefined ? undefined : asOptionalRecord(payload.metadata)
+      });
+
+      if (!artifact) {
+        return jsonError('Research artifact not found', 404);
+      }
+
+      return Response.json({ artifact });
+    } catch (error) {
+      return jsonError(asErrorMessage(error, 'Failed to update research artifact'));
+    }
+  }, {
+    params: t.Object({
+      id: t.String({ minLength: 1 })
+    })
+  })
+  .delete('/research/library/:id', async ({ params }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const numericId = Number(params.id);
+    if (!Number.isInteger(numericId) || numericId <= 0) {
+      return jsonError('Invalid artifact id', 400);
+    }
+
+    const removed = await deleteResearchArtifactRecord(session.user.id, numericId);
+    if (!removed) {
+      return jsonError('Research artifact not found', 404);
+    }
+
+    return Response.json({ success: true });
+  }, {
+    params: t.Object({
+      id: t.String({ minLength: 1 })
+    })
+  })
+  .get('/research/library/:id/file', async ({ params }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const numericId = Number(params.id);
+    if (!Number.isInteger(numericId) || numericId <= 0) {
+      return jsonError('Invalid artifact id', 400);
+    }
+
+    const fileResponse = await getResearchArtifactFileResponse(session.user.id, numericId);
+    if (!fileResponse) {
+      return jsonError('Research upload not found', 404);
+    }
+
+    return fileResponse;
+  }, {
+    params: t.Object({
+      id: t.String({ minLength: 1 })
+    })
+  })
+  .get('/research/memo', async ({ query }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const ticker = typeof query.ticker === 'string' ? query.ticker.trim().toUpperCase() : '';
+    if (!ticker) {
+      return jsonError('ticker is required');
+    }
+
+    const memo = await getResearchMemoByTicker(session.user.id, ticker);
+    return Response.json({ memo });
+  }, {
+    query: t.Object({
+      ticker: t.String({ minLength: 1 })
+    })
+  })
+  .put('/research/memo', async ({ body }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const payload = asRecord(body);
+    const ticker = typeof payload.ticker === 'string' ? payload.ticker.trim().toUpperCase() : '';
+    if (!ticker) {
+      return jsonError('ticker is required');
+    }
+
+    const rating = asResearchMemoRating(payload.rating);
+    const conviction = asResearchMemoConviction(payload.conviction);
+
+    if (payload.rating !== undefined && rating === undefined) {
+      return jsonError('Invalid memo rating', 400);
+    }
+
+    if (payload.conviction !== undefined && conviction === undefined) {
+      return jsonError('Invalid memo conviction', 400);
+    }
+
+    try {
+      const memo = await upsertResearchMemoRecord({
+        userId: session.user.id,
+        ticker,
+        rating,
+        conviction,
+        timeHorizonMonths: payload.timeHorizonMonths === undefined
+          ? undefined
+          : (typeof payload.timeHorizonMonths === 'number' ? payload.timeHorizonMonths : Number(payload.timeHorizonMonths)),
+        packetTitle: payload.packetTitle === undefined ? undefined : asOptionalString(payload.packetTitle),
+        packetSubtitle: payload.packetSubtitle === undefined ? undefined : asOptionalString(payload.packetSubtitle),
+        thesisMarkdown: payload.thesisMarkdown === undefined ? undefined : String(payload.thesisMarkdown),
+        variantViewMarkdown: payload.variantViewMarkdown === undefined ? undefined : String(payload.variantViewMarkdown),
+        catalystsMarkdown: payload.catalystsMarkdown === undefined ? undefined : String(payload.catalystsMarkdown),
+        risksMarkdown: payload.risksMarkdown === undefined ? undefined : String(payload.risksMarkdown),
+        disconfirmingEvidenceMarkdown: payload.disconfirmingEvidenceMarkdown === undefined ? undefined : String(payload.disconfirmingEvidenceMarkdown),
+        nextActionsMarkdown: payload.nextActionsMarkdown === undefined ? undefined : String(payload.nextActionsMarkdown)
+      });
+
+      return Response.json({ memo });
+    } catch (error) {
+      return jsonError(asErrorMessage(error, 'Failed to save research memo'));
+    }
+  })
+  .post('/research/memo/:id/evidence', async ({ params, body }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const numericId = Number(params.id);
+    if (!Number.isInteger(numericId) || numericId <= 0) {
+      return jsonError('Invalid memo id', 400);
+    }
+
+    const payload = asRecord(body);
+    const section = asResearchMemoSection(payload.section);
+    const artifactId = typeof payload.artifactId === 'number' ? payload.artifactId : Number(payload.artifactId);
+
+    if (!section) {
+      return jsonError('section is required', 400);
+    }
+
+    if (!Number.isInteger(artifactId) || artifactId <= 0) {
+      return jsonError('artifactId is required', 400);
+    }
+
+    try {
+      const evidence = await addResearchMemoEvidenceLink({
+        userId: session.user.id,
+        memoId: numericId,
+        artifactId,
+        section,
+        annotation: asOptionalString(payload.annotation),
+        sortOrder: payload.sortOrder === undefined
+          ? undefined
+          : (typeof payload.sortOrder === 'number' ? payload.sortOrder : Number(payload.sortOrder))
+      });
+
+      return Response.json({ evidence });
+    } catch (error) {
+      return jsonError(asErrorMessage(error, 'Failed to attach memo evidence'));
+    }
+  }, {
+    params: t.Object({
+      id: t.String({ minLength: 1 })
+    })
+  })
+  .delete('/research/memo/:id/evidence/:linkId', async ({ params }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const memoId = Number(params.id);
+    const linkId = Number(params.linkId);
+    if (!Number.isInteger(memoId) || memoId <= 0 || !Number.isInteger(linkId) || linkId <= 0) {
+      return jsonError('Invalid memo evidence id', 400);
+    }
+
+    const removed = await deleteResearchMemoEvidenceLink(session.user.id, memoId, linkId);
+    if (!removed) {
+      return jsonError('Memo evidence not found', 404);
+    }
+
+    return Response.json({ success: true });
+  }, {
+    params: t.Object({
+      id: t.String({ minLength: 1 }),
+      linkId: t.String({ minLength: 1 })
+    })
+  })
+  .get('/research/packet', async ({ query }) => {
+    const { session, response } = await requireAuthenticatedSession();
+    if (response) {
+      return response;
+    }
+
+    const ticker = typeof query.ticker === 'string' ? query.ticker.trim().toUpperCase() : '';
+    if (!ticker) {
+      return jsonError('ticker is required');
+    }
+
+    const packet = await getResearchPacket(session.user.id, ticker);
+    return Response.json({ packet });
+  }, {
+    query: t.Object({
+      ticker: t.String({ minLength: 1 })
+    })
+  })
   .get('/research/journal', async ({ query }) => {
     const { session, response } = await requireAuthenticatedSession();
     if (response) {
@@ -762,6 +1214,10 @@ export const app = new Elysia({ prefix: '/api' })
         metadata
       });
 
+      if (!entry) {
+        return jsonError('Failed to create journal entry', 500);
+      }
+
       await updateWatchlistReviewByTicker(session.user.id, ticker, entry.updated_at);
 
       return Response.json({ entry });
diff --git a/lib/server/db/index.test.ts b/lib/server/db/index.test.ts
index 838e9c9..c2923f4 100644
--- a/lib/server/db/index.test.ts
+++ b/lib/server/db/index.test.ts
@@ -24,6 +24,8 @@ describe('sqlite schema compatibility bootstrap', () => {
     expect(__dbInternals.hasColumn(client, 'holding', 'company_name')).toBe(false);
     expect(__dbInternals.hasTable(client, 'filing_taxonomy_snapshot')).toBe(false);
     expect(__dbInternals.hasTable(client, 'research_journal_entry')).toBe(false);
+    expect(__dbInternals.hasTable(client, 'research_artifact')).toBe(false);
+    expect(__dbInternals.hasTable(client, 'research_memo')).toBe(false);
 
     __dbInternals.ensureLocalSqliteSchema(client);
 
@@ -37,6 +39,9 @@ describe('sqlite schema compatibility bootstrap', () => {
     expect(__dbInternals.hasTable(client, 'filing_taxonomy_snapshot')).toBe(true);
     expect(__dbInternals.hasTable(client, 'filing_taxonomy_fact')).toBe(true);
     expect(__dbInternals.hasTable(client, 'research_journal_entry')).toBe(true);
+    expect(__dbInternals.hasTable(client, 'research_artifact')).toBe(true);
+    expect(__dbInternals.hasTable(client, 'research_memo')).toBe(true);
+    expect(__dbInternals.hasTable(client, 'research_memo_evidence')).toBe(true);
 
     client.close();
   });
diff --git a/lib/server/db/index.ts b/lib/server/db/index.ts
index ed5722f..71779f8 100644
--- a/lib/server/db/index.ts
+++ b/lib/server/db/index.ts
@@ -50,7 +50,304 @@ function applySqlFile(client: Database, fileName: string) {
   client.exec(sql);
 }
 
+function applyBaseSchemaCompat(client: Database) {
+  const sql = readFileSync(join(process.cwd(), 'drizzle', '0000_cold_silver_centurion.sql'), 'utf8')
+    .replaceAll('CREATE TABLE `', 'CREATE TABLE IF NOT EXISTS `')
+    .replaceAll('CREATE UNIQUE INDEX `', 'CREATE UNIQUE INDEX IF NOT EXISTS `')
+    .replaceAll('CREATE INDEX `', 'CREATE INDEX IF NOT EXISTS `');
+
+  client.exec(sql);
+}
+
+function ensureResearchWorkspaceSchema(client: Database) {
+  if (!hasTable(client, 'research_artifact')) {
+    client.exec(`
+      CREATE TABLE IF NOT EXISTS \`research_artifact\` (
+        \`id\` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+        \`user_id\` text NOT NULL,
+        \`organization_id\` text,
+        \`ticker\` text NOT NULL,
+        \`accession_number\` text,
+        \`kind\` text NOT NULL,
+        \`source\` text NOT NULL DEFAULT 'user',
+        \`subtype\` text,
+        \`title\` text,
+        \`summary\` text,
+        \`body_markdown\` text,
+        \`search_text\` text,
+        \`visibility_scope\` text NOT NULL DEFAULT 'private',
+        \`tags\` text,
+        \`metadata\` text,
+        \`file_name\` text,
+        \`mime_type\` text,
+        \`file_size_bytes\` integer,
+        \`storage_path\` text,
+        \`created_at\` text NOT NULL,
+        \`updated_at\` text NOT NULL,
+        FOREIGN KEY (\`user_id\`) REFERENCES \`user\`(\`id\`) ON UPDATE no action ON DELETE cascade,
+        FOREIGN KEY (\`organization_id\`) REFERENCES \`organization\`(\`id\`) ON UPDATE no action ON DELETE set null
+      );
+    `);
+  }
+
+  if (!hasTable(client, 'research_memo')) {
+    client.exec(`
+      CREATE TABLE IF NOT EXISTS \`research_memo\` (
+        \`id\` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+        \`user_id\` text NOT NULL,
+        \`organization_id\` text,
+        \`ticker\` text NOT NULL,
+        \`rating\` text,
+        \`conviction\` text,
+        \`time_horizon_months\` integer,
+        \`packet_title\` text,
+        \`packet_subtitle\` text,
+        \`thesis_markdown\` text NOT NULL DEFAULT '',
+        \`variant_view_markdown\` text NOT NULL DEFAULT '',
+        \`catalysts_markdown\` text NOT NULL DEFAULT '',
+        \`risks_markdown\` text NOT NULL DEFAULT '',
+        \`disconfirming_evidence_markdown\` text NOT NULL DEFAULT '',
+        \`next_actions_markdown\` text NOT NULL DEFAULT '',
+        \`created_at\` text NOT NULL,
+        \`updated_at\` text NOT NULL,
+        FOREIGN KEY (\`user_id\`) REFERENCES \`user\`(\`id\`) ON UPDATE no action ON DELETE cascade,
+        FOREIGN KEY (\`organization_id\`) REFERENCES \`organization\`(\`id\`) ON UPDATE no action ON DELETE set null
+      );
+    `);
+  }
+
+  if (!hasTable(client, 'research_memo_evidence')) {
+    client.exec(`
+      CREATE TABLE IF NOT EXISTS \`research_memo_evidence\` (
+        \`id\` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+        \`memo_id\` integer NOT NULL,
+        \`artifact_id\` integer NOT NULL,
+        \`section\` text NOT NULL,
+        \`annotation\` text,
+        \`sort_order\` integer NOT NULL DEFAULT 0,
+        \`created_at\` text NOT NULL,
+        FOREIGN KEY (\`memo_id\`) REFERENCES \`research_memo\`(\`id\`) ON UPDATE no action ON DELETE cascade,
+        FOREIGN KEY (\`artifact_id\`) REFERENCES \`research_artifact\`(\`id\`) ON UPDATE no action ON DELETE cascade
+      );
+    `);
+  }
+
+  client.exec('CREATE INDEX IF NOT EXISTS `research_artifact_ticker_idx` ON `research_artifact` (`user_id`, `ticker`, `updated_at`);');
+  client.exec('CREATE INDEX IF NOT EXISTS `research_artifact_kind_idx` ON `research_artifact` (`user_id`, `kind`, `updated_at`);');
+  client.exec('CREATE INDEX IF NOT EXISTS `research_artifact_accession_idx` ON `research_artifact` (`user_id`, `accession_number`);');
+  client.exec('CREATE INDEX IF NOT EXISTS `research_artifact_source_idx` ON `research_artifact` (`user_id`, `source`, `updated_at`);');
+  client.exec('CREATE UNIQUE INDEX IF NOT EXISTS `research_memo_ticker_uidx` ON `research_memo` (`user_id`, `ticker`);');
+  client.exec('CREATE INDEX IF NOT EXISTS `research_memo_updated_idx` ON `research_memo` (`user_id`, `updated_at`);');
+  client.exec('CREATE INDEX IF NOT EXISTS `research_memo_evidence_memo_idx` ON `research_memo_evidence` (`memo_id`, `section`, `sort_order`);');
+  client.exec('CREATE INDEX IF NOT EXISTS `research_memo_evidence_artifact_idx` ON `research_memo_evidence` (`artifact_id`);');
+  client.exec('CREATE UNIQUE INDEX IF NOT EXISTS `research_memo_evidence_unique_uidx` ON `research_memo_evidence` (`memo_id`, `artifact_id`, `section`);');
+  client.exec(`
+    CREATE VIRTUAL TABLE IF NOT EXISTS \`research_artifact_fts\` USING fts5(
+      artifact_id UNINDEXED,
+      user_id UNINDEXED,
+      ticker UNINDEXED,
+      title,
+      summary,
+      body_markdown,
+      search_text,
+      tags_text
+    );
+  `);
+
+  client.exec(`
+    INSERT INTO \`research_artifact\` (
+      \`user_id\`,
+      \`organization_id\`,
+      \`ticker\`,
+      \`accession_number\`,
+      \`kind\`,
+      \`source\`,
+      \`subtype\`,
+      \`title\`,
+      \`summary\`,
+      \`body_markdown\`,
+      \`search_text\`,
+      \`visibility_scope\`,
+      \`tags\`,
+      \`metadata\`,
+      \`created_at\`,
+      \`updated_at\`
+    )
+    SELECT
+      r.\`user_id\`,
+      NULL,
+      r.\`ticker\`,
+      r.\`accession_number\`,
+      CASE
+        WHEN r.\`entry_type\` = 'status_change' THEN 'status_change'
+        ELSE 'note'
+      END,
+      CASE
+        WHEN r.\`entry_type\` = 'status_change' THEN 'system'
+        ELSE 'user'
+      END,
+      r.\`entry_type\`,
+      r.\`title\`,
+      CASE
+        WHEN r.\`body_markdown\` IS NULL OR TRIM(r.\`body_markdown\`) = '' THEN NULL
+        ELSE SUBSTR(r.\`body_markdown\`, 1, 280)
+      END,
+      r.\`body_markdown\`,
+      r.\`body_markdown\`,
+      'private',
+      NULL,
+      r.\`metadata\`,
+      r.\`created_at\`,
+      r.\`updated_at\`
+    FROM \`research_journal_entry\` r
+    WHERE EXISTS (SELECT 1 FROM sqlite_master WHERE type = 'table' AND name = 'research_journal_entry')
+      AND NOT EXISTS (
+        SELECT 1
+        FROM \`research_artifact\` a
+        WHERE a.\`user_id\` = r.\`user_id\`
+          AND a.\`ticker\` = r.\`ticker\`
+          AND IFNULL(a.\`accession_number\`, '') = IFNULL(r.\`accession_number\`, '')
+          AND a.\`kind\` = CASE
+            WHEN r.\`entry_type\` = 'status_change' THEN 'status_change'
+            ELSE 'note'
+          END
+          AND IFNULL(a.\`title\`, '') = IFNULL(r.\`title\`, '')
+          AND a.\`created_at\` = r.\`created_at\`
+      );
+  `);
+
+  client.exec(`
+    INSERT INTO \`research_artifact\` (
+      \`user_id\`,
+      \`organization_id\`,
+      \`ticker\`,
+      \`accession_number\`,
+      \`kind\`,
+      \`source\`,
+      \`subtype\`,
+      \`title\`,
+      \`summary\`,
+      \`body_markdown\`,
+      \`search_text\`,
+      \`visibility_scope\`,
+      \`tags\`,
+      \`metadata\`,
+      \`created_at\`,
+      \`updated_at\`
+    )
+    SELECT
+      w.\`user_id\`,
+      NULL,
+      f.\`ticker\`,
+      f.\`accession_number\`,
+      'ai_report',
+      'system',
+      'filing_analysis',
+      f.\`filing_type\` || ' AI memo',
+      COALESCE(json_extract(f.\`analysis\`, '$.text'), json_extract(f.\`analysis\`, '$.legacyInsights')),
+      'Stored AI memo for ' || f.\`company_name\` || ' (' || f.\`ticker\` || ').' || CHAR(10) ||
+      'Accession: ' || f.\`accession_number\` || CHAR(10) || CHAR(10) ||
+      COALESCE(json_extract(f.\`analysis\`, '$.text'), json_extract(f.\`analysis\`, '$.legacyInsights')),
+      COALESCE(json_extract(f.\`analysis\`, '$.text'), json_extract(f.\`analysis\`, '$.legacyInsights')),
+      'private',
+      NULL,
+      json_object(
+        'provider', json_extract(f.\`analysis\`, '$.provider'),
+        'model', json_extract(f.\`analysis\`, '$.model'),
+        'filingType', f.\`filing_type\`,
+        'filingDate', f.\`filing_date\`
+      ),
+      f.\`created_at\`,
+      f.\`updated_at\`
+    FROM \`filing\` f
+    JOIN \`watchlist_item\` w
+      ON w.\`ticker\` = f.\`ticker\`
+    WHERE f.\`analysis\` IS NOT NULL
+      AND TRIM(COALESCE(json_extract(f.\`analysis\`, '$.text'), json_extract(f.\`analysis\`, '$.legacyInsights'), '')) <> ''
+      AND NOT EXISTS (
+        SELECT 1
+        FROM \`research_artifact\` a
+        WHERE a.\`user_id\` = w.\`user_id\`
+          AND a.\`ticker\` = f.\`ticker\`
+          AND a.\`accession_number\` = f.\`accession_number\`
+          AND a.\`kind\` = 'ai_report'
+      );
+  `);
+
+  client.exec('DELETE FROM `research_artifact_fts`;');
+  client.exec(`
+    INSERT INTO \`research_artifact_fts\` (
+      \`artifact_id\`,
+      \`user_id\`,
+      \`ticker\`,
+      \`title\`,
+      \`summary\`,
+      \`body_markdown\`,
+      \`search_text\`,
+      \`tags_text\`
+    )
+    SELECT
+      \`id\`,
+      \`user_id\`,
+      \`ticker\`,
+      COALESCE(\`title\`, ''),
+      COALESCE(\`summary\`, ''),
+      COALESCE(\`body_markdown\`, ''),
+      COALESCE(\`search_text\`, ''),
+      CASE
+        WHEN \`tags\` IS NULL OR TRIM(\`tags\`) = '' THEN ''
+        ELSE REPLACE(REPLACE(REPLACE(\`tags\`, '[', ''), ']', ''), '\"', '')
+      END
+    FROM \`research_artifact\`;
+  `);
+}
+
 function ensureLocalSqliteSchema(client: Database) {
+  const missingBaseSchema = [
+    'filing',
+    'watchlist_item',
+    'holding',
+    'task_run',
+    'portfolio_insight'
+  ].some((tableName) => !hasTable(client, tableName));
+
+  if (missingBaseSchema) {
+    applyBaseSchemaCompat(client);
+  }
+
+  if (!hasTable(client, 'user')) {
+    client.exec(`
+      CREATE TABLE IF NOT EXISTS \`user\` (
+        \`id\` text PRIMARY KEY NOT NULL,
+        \`name\` text NOT NULL,
+        \`email\` text NOT NULL,
+        \`emailVerified\` integer NOT NULL DEFAULT 0,
+        \`image\` text,
+        \`createdAt\` integer NOT NULL,
+        \`updatedAt\` integer NOT NULL,
+        \`role\` text,
+        \`banned\` integer DEFAULT 0,
+        \`banReason\` text,
+        \`banExpires\` integer
+      );
+    `);
+    client.exec('CREATE UNIQUE INDEX IF NOT EXISTS `user_email_uidx` ON `user` (`email`);');
+  }
+
+  if (!hasTable(client, 'organization')) {
+    client.exec(`
+      CREATE TABLE IF NOT EXISTS \`organization\` (
+        \`id\` text PRIMARY KEY NOT NULL,
+        \`name\` text NOT NULL,
+        \`slug\` text NOT NULL,
+        \`logo\` text,
+        \`createdAt\` integer NOT NULL,
+        \`metadata\` text
+      );
+    `);
+    client.exec('CREATE UNIQUE INDEX IF NOT EXISTS `organization_slug_uidx` ON `organization` (`slug`);');
+  }
+
   if (!hasTable(client, 'filing_statement_snapshot')) {
     applySqlFile(client, '0001_glossy_statement_snapshots.sql');
   }
@@ -142,6 +439,8 @@ function ensureLocalSqliteSchema(client: Database) {
     client.exec('CREATE INDEX IF NOT EXISTS `research_journal_ticker_idx` ON `research_journal_entry` (`user_id`, `ticker`, `created_at`);');
     client.exec('CREATE INDEX IF NOT EXISTS `research_journal_accession_idx` ON `research_journal_entry` (`user_id`, `accession_number`);');
   }
+
+  ensureResearchWorkspaceSchema(client);
 }
 
 export function getSqliteClient() {
diff --git a/lib/server/db/schema.ts b/lib/server/db/schema.ts
index 95158ec..dc063fb 100644
--- a/lib/server/db/schema.ts
+++ b/lib/server/db/schema.ts
@@ -30,6 +30,18 @@ type TaxonomyMetricValidationStatus = 'not_run' | 'matched' | 'mismatch' | 'erro
 type CoverageStatus = 'backlog' | 'active' | 'watch' | 'archive';
 type CoveragePriority = 'low' | 'medium' | 'high';
 type ResearchJournalEntryType = 'note' | 'filing_note' | 'status_change';
+type ResearchArtifactKind = 'filing' | 'ai_report' | 'note' | 'upload' | 'memo_snapshot' | 'status_change';
+type ResearchArtifactSource = 'system' | 'user';
+type ResearchVisibilityScope = 'private' | 'organization';
+type ResearchMemoRating = 'strong_buy' | 'buy' | 'hold' | 'sell';
+type ResearchMemoConviction = 'low' | 'medium' | 'high';
+type ResearchMemoSection =
+  | 'thesis'
+  | 'variant_view'
+  | 'catalysts'
+  | 'risks'
+  | 'disconfirming_evidence'
+  | 'next_actions';
 type FinancialCadence = 'annual' | 'quarterly' | 'ltm';
 type FinancialSurfaceKind =
   | 'income_statement'
@@ -570,6 +582,72 @@ export const researchJournalEntry = sqliteTable('research_journal_entry', {
   researchJournalAccessionIndex: index('research_journal_accession_idx').on(table.user_id, table.accession_number)
 }));
 
+export const researchArtifact = sqliteTable('research_artifact', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  user_id: text('user_id').notNull().references(() => user.id, { onDelete: 'cascade' }),
+  organization_id: text('organization_id').references(() => organization.id, { onDelete: 'set null' }),
+  ticker: text('ticker').notNull(),
+  accession_number: text('accession_number'),
+  kind: text('kind').$type<ResearchArtifactKind>().notNull(),
+  source: text('source').$type<ResearchArtifactSource>().notNull().default('user'),
+  subtype: text('subtype'),
+  title: text('title'),
+  summary: text('summary'),
+  body_markdown: text('body_markdown'),
+  search_text: text('search_text'),
+  visibility_scope: text('visibility_scope').$type<ResearchVisibilityScope>().notNull().default('private'),
+  tags: text('tags', { mode: 'json' }).$type<string[]>(),
+  metadata: text('metadata', { mode: 'json' }).$type<Record<string, unknown> | null>(),
+  file_name: text('file_name'),
+  mime_type: text('mime_type'),
+  file_size_bytes: integer('file_size_bytes'),
+  storage_path: text('storage_path'),
+  created_at: text('created_at').notNull(),
+  updated_at: text('updated_at').notNull()
+}, (table) => ({
+  researchArtifactTickerIndex: index('research_artifact_ticker_idx').on(table.user_id, table.ticker, table.updated_at),
+  researchArtifactKindIndex: index('research_artifact_kind_idx').on(table.user_id, table.kind, table.updated_at),
+  researchArtifactAccessionIndex: index('research_artifact_accession_idx').on(table.user_id, table.accession_number),
+  researchArtifactSourceIndex: index('research_artifact_source_idx').on(table.user_id, table.source, table.updated_at)
+}));
+
+export const researchMemo = sqliteTable('research_memo', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  user_id: text('user_id').notNull().references(() => user.id, { onDelete: 'cascade' }),
+  organization_id: text('organization_id').references(() => organization.id, { onDelete: 'set null' }),
+  ticker: text('ticker').notNull(),
+  rating: text('rating').$type<ResearchMemoRating>(),
+  conviction: text('conviction').$type<ResearchMemoConviction>(),
+  time_horizon_months: integer('time_horizon_months'),
+  packet_title: text('packet_title'),
+  packet_subtitle: text('packet_subtitle'),
+  thesis_markdown: text('thesis_markdown').notNull().default(''),
+  variant_view_markdown: text('variant_view_markdown').notNull().default(''),
+  catalysts_markdown: text('catalysts_markdown').notNull().default(''),
+  risks_markdown: text('risks_markdown').notNull().default(''),
+  disconfirming_evidence_markdown: text('disconfirming_evidence_markdown').notNull().default(''),
+  next_actions_markdown: text('next_actions_markdown').notNull().default(''),
+  created_at: text('created_at').notNull(),
+  updated_at: text('updated_at').notNull()
+}, (table) => ({
+  researchMemoTickerUnique: uniqueIndex('research_memo_ticker_uidx').on(table.user_id, table.ticker),
+  researchMemoUpdatedIndex: index('research_memo_updated_idx').on(table.user_id, table.updated_at)
+}));
+
+export const researchMemoEvidence = sqliteTable('research_memo_evidence', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  memo_id: integer('memo_id').notNull().references(() => researchMemo.id, { onDelete: 'cascade' }),
+  artifact_id: integer('artifact_id').notNull().references(() => researchArtifact.id, { onDelete: 'cascade' }),
+  section: text('section').$type<ResearchMemoSection>().notNull(),
+  annotation: text('annotation'),
+  sort_order: integer('sort_order').notNull().default(0),
+  created_at: text('created_at').notNull()
+}, (table) => ({
+  researchMemoEvidenceMemoIndex: index('research_memo_evidence_memo_idx').on(table.memo_id, table.section, table.sort_order),
+  researchMemoEvidenceArtifactIndex: index('research_memo_evidence_artifact_idx').on(table.artifact_id),
+  researchMemoEvidenceUnique: uniqueIndex('research_memo_evidence_unique_uidx').on(table.memo_id, table.artifact_id, table.section)
+}));
+
 export const authSchema = {
   user,
   session,
@@ -595,7 +673,10 @@ export const appSchema = {
   taskRun,
   taskStageEvent,
   portfolioInsight,
-  researchJournalEntry
+  researchJournalEntry,
+  researchArtifact,
+  researchMemo,
+  researchMemoEvidence
 };
 
 export const schema = {
diff --git a/lib/server/financials/canonical-definitions.ts b/lib/server/financials/canonical-definitions.ts
index 6c603ae..87338d1 100644
--- a/lib/server/financials/canonical-definitions.ts
+++ b/lib/server/financials/canonical-definitions.ts
@@ -2,6 +2,11 @@ import type {
   FinancialStatementKind,
   FinancialUnit
 } from '@/lib/types';
+import {
+  BALANCE_SHEET_METRIC_DEFINITIONS,
+  CASH_FLOW_STATEMENT_METRIC_DEFINITIONS,
+  INCOME_STATEMENT_METRIC_DEFINITIONS
+} from '@/lib/financial-metrics';
 
 export type CanonicalRowDefinition = {
   key: string;
@@ -13,73 +18,8 @@ export type CanonicalRowDefinition = {
   labelIncludes?: readonly string[];
 };
 
-const INCOME_DEFINITIONS: CanonicalRowDefinition[] = [
-  { key: 'revenue', label: 'Revenue', category: 'revenue', order: 10, unit: 'currency', localNames: ['RevenueFromContractWithCustomerExcludingAssessedTax', 'Revenues', 'SalesRevenueNet', 'TotalRevenuesAndOtherIncome'], labelIncludes: ['revenue', 'sales'] },
-  { key: 'cost_of_revenue', label: 'Cost of Revenue', category: 'expense', order: 20, unit: 'currency', localNames: ['CostOfRevenue', 'CostOfGoodsSold', 'CostOfSales', 'CostOfProductsSold', 'CostOfServices'], labelIncludes: ['cost of revenue', 'cost of sales', 'cost of goods sold'] },
-  { key: 'gross_profit', label: 'Gross Profit', category: 'profit', order: 30, unit: 'currency', localNames: ['GrossProfit'] },
-  { key: 'gross_margin', label: 'Gross Margin', category: 'margin', order: 40, unit: 'percent', labelIncludes: ['gross margin'] },
-  { key: 'research_and_development', label: 'Research & Development', category: 'opex', order: 50, unit: 'currency', localNames: ['ResearchAndDevelopmentExpense'], labelIncludes: ['research and development'] },
-  { key: 'sales_and_marketing', label: 'Sales & Marketing', category: 'opex', order: 60, unit: 'currency', localNames: ['SellingAndMarketingExpense'], labelIncludes: ['sales and marketing', 'selling and marketing'] },
-  { key: 'general_and_administrative', label: 'General & Administrative', category: 'opex', order: 70, unit: 'currency', localNames: ['GeneralAndAdministrativeExpense'], labelIncludes: ['general and administrative'] },
-  { key: 'selling_general_and_administrative', label: 'Selling, General & Administrative', category: 'opex', order: 80, unit: 'currency', localNames: ['SellingGeneralAndAdministrativeExpense'], labelIncludes: ['selling, general', 'selling general'] },
-  { key: 'operating_income', label: 'Operating Income', category: 'profit', order: 90, unit: 'currency', localNames: ['OperatingIncomeLoss', 'IncomeLossFromOperations'], labelIncludes: ['operating income'] },
-  { key: 'operating_margin', label: 'Operating Margin', category: 'margin', order: 100, unit: 'percent', labelIncludes: ['operating margin'] },
-  { key: 'interest_income', label: 'Interest Income', category: 'non_operating', order: 110, unit: 'currency', localNames: ['InterestIncomeExpenseNonoperatingNet', 'InterestIncomeOther', 'InvestmentIncomeInterest'], labelIncludes: ['interest income'] },
-  { key: 'interest_expense', label: 'Interest Expense', category: 'non_operating', order: 120, unit: 'currency', localNames: ['InterestExpense', 'InterestAndDebtExpense'], labelIncludes: ['interest expense'] },
-  { key: 'other_non_operating_income', label: 'Other Non-Operating Income', category: 'non_operating', order: 130, unit: 'currency', localNames: ['OtherNonoperatingIncomeExpense', 'NonoperatingIncomeExpense'], labelIncludes: ['other non-operating', 'non-operating income'] },
-  { key: 'pretax_income', label: 'Pretax Income', category: 'profit', order: 140, unit: 'currency', localNames: ['IncomeBeforeTaxExpenseBenefit', 'PretaxIncome'], labelIncludes: ['income before taxes', 'pretax income'] },
-  { key: 'income_tax_expense', label: 'Income Tax Expense', category: 'tax', order: 150, unit: 'currency', localNames: ['IncomeTaxExpenseBenefit'], labelIncludes: ['income tax'] },
-  { key: 'effective_tax_rate', label: 'Effective Tax Rate', category: 'tax', order: 160, unit: 'percent', labelIncludes: ['effective tax rate'] },
-  { key: 'net_income', label: 'Net Income', category: 'profit', order: 170, unit: 'currency', localNames: ['NetIncomeLoss', 'ProfitLoss'], labelIncludes: ['net income'] },
-  { key: 'diluted_eps', label: 'Diluted EPS', category: 'per_share', order: 180, unit: 'currency', localNames: ['EarningsPerShareDiluted', 'DilutedEarningsPerShare'], labelIncludes: ['diluted eps', 'diluted earnings per share'] },
-  { key: 'basic_eps', label: 'Basic EPS', category: 'per_share', order: 190, unit: 'currency', localNames: ['EarningsPerShareBasic', 'BasicEarningsPerShare'], labelIncludes: ['basic eps', 'basic earnings per share'] },
-  { key: 'diluted_shares', label: 'Diluted Shares', category: 'shares', order: 200, unit: 'shares', localNames: ['WeightedAverageNumberOfDilutedSharesOutstanding', 'WeightedAverageNumberOfShareOutstandingDiluted'], labelIncludes: ['diluted shares', 'weighted average diluted'] },
-  { key: 'basic_shares', label: 'Basic Shares', category: 'shares', order: 210, unit: 'shares', localNames: ['WeightedAverageNumberOfSharesOutstandingBasic', 'WeightedAverageNumberOfShareOutstandingBasicAndDiluted'], labelIncludes: ['basic shares', 'weighted average basic'] },
-  { key: 'depreciation_and_amortization', label: 'Depreciation & Amortization', category: 'non_cash', order: 220, unit: 'currency', localNames: ['DepreciationDepletionAndAmortization', 'DepreciationAmortizationAndAccretionNet', 'DepreciationAndAmortization'], labelIncludes: ['depreciation', 'amortization'] },
-  { key: 'ebitda', label: 'EBITDA', category: 'profit', order: 230, unit: 'currency', localNames: ['OperatingIncomeLoss'], labelIncludes: ['ebitda'] },
-  { key: 'stock_based_compensation', label: 'Stock-Based Compensation', category: 'non_cash', order: 240, unit: 'currency', localNames: ['ShareBasedCompensation', 'AllocatedShareBasedCompensationExpense'], labelIncludes: ['stock-based compensation', 'share-based compensation'] }
-];
-
-const BALANCE_DEFINITIONS: CanonicalRowDefinition[] = [
-  { key: 'cash_and_equivalents', label: 'Cash & Equivalents', category: 'asset', order: 10, unit: 'currency', localNames: ['CashAndCashEquivalentsAtCarryingValue', 'CashCashEquivalentsAndShortTermInvestments', 'CashAndShortTermInvestments'], labelIncludes: ['cash and cash equivalents'] },
-  { key: 'short_term_investments', label: 'Short-Term Investments', category: 'asset', order: 20, unit: 'currency', localNames: ['AvailableForSaleSecuritiesCurrent', 'ShortTermInvestments'], labelIncludes: ['short-term investments', 'marketable securities'] },
-  { key: 'accounts_receivable', label: 'Accounts Receivable', category: 'asset', order: 30, unit: 'currency', localNames: ['AccountsReceivableNetCurrent', 'ReceivablesNetCurrent'], labelIncludes: ['accounts receivable'] },
-  { key: 'inventory', label: 'Inventory', category: 'asset', order: 40, unit: 'currency', localNames: ['InventoryNet'], labelIncludes: ['inventory'] },
-  { key: 'other_current_assets', label: 'Other Current Assets', category: 'asset', order: 50, unit: 'currency', localNames: ['OtherAssetsCurrent'], labelIncludes: ['other current assets'] },
-  { key: 'current_assets', label: 'Current Assets', category: 'asset', order: 60, unit: 'currency', localNames: ['AssetsCurrent'], labelIncludes: ['current assets'] },
-  { key: 'property_plant_equipment', label: 'Property, Plant & Equipment', category: 'asset', order: 70, unit: 'currency', localNames: ['PropertyPlantAndEquipmentNet'], labelIncludes: ['property, plant and equipment', 'property and equipment'] },
-  { key: 'goodwill', label: 'Goodwill', category: 'asset', order: 80, unit: 'currency', localNames: ['Goodwill'], labelIncludes: ['goodwill'] },
-  { key: 'intangible_assets', label: 'Intangible Assets', category: 'asset', order: 90, unit: 'currency', localNames: ['FiniteLivedIntangibleAssetsNet', 'IndefiniteLivedIntangibleAssetsExcludingGoodwill', 'IntangibleAssetsNetExcludingGoodwill'], labelIncludes: ['intangible assets'] },
-  { key: 'total_assets', label: 'Total Assets', category: 'asset', order: 100, unit: 'currency', localNames: ['Assets'], labelIncludes: ['total assets'] },
-  { key: 'accounts_payable', label: 'Accounts Payable', category: 'liability', order: 110, unit: 'currency', localNames: ['AccountsPayableCurrent'], labelIncludes: ['accounts payable'] },
-  { key: 'accrued_liabilities', label: 'Accrued Liabilities', category: 'liability', order: 120, unit: 'currency', localNames: ['AccruedLiabilitiesCurrent'], labelIncludes: ['accrued liabilities'] },
-  { key: 'deferred_revenue_current', label: 'Deferred Revenue, Current', category: 'liability', order: 130, unit: 'currency', localNames: ['ContractWithCustomerLiabilityCurrent', 'DeferredRevenueCurrent'], labelIncludes: ['deferred revenue current', 'current deferred revenue'] },
-  { key: 'current_liabilities', label: 'Current Liabilities', category: 'liability', order: 140, unit: 'currency', localNames: ['LiabilitiesCurrent'], labelIncludes: ['current liabilities'] },
-  { key: 'long_term_debt', label: 'Long-Term Debt', category: 'liability', order: 150, unit: 'currency', localNames: ['LongTermDebtNoncurrent', 'LongTermDebt', 'DebtNoncurrent', 'LongTermDebtAndCapitalLeaseObligations'], labelIncludes: ['long-term debt'] },
-  { key: 'current_debt', label: 'Current Debt', category: 'liability', order: 160, unit: 'currency', localNames: ['DebtCurrent', 'ShortTermBorrowings', 'LongTermDebtCurrent'], labelIncludes: ['current debt', 'short-term debt'] },
-  { key: 'lease_liabilities', label: 'Lease Liabilities', category: 'liability', order: 170, unit: 'currency', localNames: ['OperatingLeaseLiabilityNoncurrent', 'FinanceLeaseLiabilityNoncurrent', 'LesseeOperatingLeaseLiability'], labelIncludes: ['lease liabilities'] },
-  { key: 'total_debt', label: 'Total Debt', category: 'liability', order: 180, unit: 'currency', localNames: ['DebtAndFinanceLeaseLiabilities', 'Debt'], labelIncludes: ['total debt'] },
-  { key: 'deferred_revenue_noncurrent', label: 'Deferred Revenue, Noncurrent', category: 'liability', order: 190, unit: 'currency', localNames: ['ContractWithCustomerLiabilityNoncurrent', 'DeferredRevenueNoncurrent'], labelIncludes: ['deferred revenue noncurrent'] },
-  { key: 'total_liabilities', label: 'Total Liabilities', category: 'liability', order: 200, unit: 'currency', localNames: ['Liabilities'], labelIncludes: ['total liabilities'] },
-  { key: 'retained_earnings', label: 'Retained Earnings', category: 'equity', order: 210, unit: 'currency', localNames: ['RetainedEarningsAccumulatedDeficit'], labelIncludes: ['retained earnings', 'accumulated deficit'] },
-  { key: 'total_equity', label: 'Total Equity', category: 'equity', order: 220, unit: 'currency', localNames: ['StockholdersEquity', 'StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest', 'PartnersCapital'], labelIncludes: ['total equity', 'stockholders’ equity', 'stockholders equity'] },
-  { key: 'net_cash_position', label: 'Net Cash Position', category: 'liquidity', order: 230, unit: 'currency', labelIncludes: ['net cash position'] }
-];
-
-const CASH_FLOW_DEFINITIONS: CanonicalRowDefinition[] = [
-  { key: 'operating_cash_flow', label: 'Operating Cash Flow', category: 'cash_flow', order: 10, unit: 'currency', localNames: ['NetCashProvidedByUsedInOperatingActivities', 'NetCashProvidedByUsedInOperatingActivitiesContinuingOperations'], labelIncludes: ['operating cash flow'] },
-  { key: 'capital_expenditures', label: 'Capital Expenditures', category: 'cash_flow', order: 20, unit: 'currency', localNames: ['PaymentsToAcquirePropertyPlantAndEquipment', 'CapitalExpendituresIncurredButNotYetPaid'], labelIncludes: ['capital expenditures', 'capital expenditure'] },
-  { key: 'free_cash_flow', label: 'Free Cash Flow', category: 'cash_flow', order: 30, unit: 'currency', labelIncludes: ['free cash flow'] },
-  { key: 'stock_based_compensation', label: 'Stock-Based Compensation', category: 'non_cash', order: 40, unit: 'currency', localNames: ['ShareBasedCompensation', 'AllocatedShareBasedCompensationExpense'], labelIncludes: ['stock-based compensation', 'share-based compensation'] },
-  { key: 'acquisitions', label: 'Acquisitions', category: 'investing', order: 50, unit: 'currency', localNames: ['PaymentsToAcquireBusinessesNetOfCashAcquired'], labelIncludes: ['acquisitions'] },
-  { key: 'share_repurchases', label: 'Share Repurchases', category: 'financing', order: 60, unit: 'currency', localNames: ['PaymentsForRepurchaseOfCommonStock', 'PaymentsForRepurchaseOfEquity'], labelIncludes: ['share repurchases', 'repurchase of common stock'] },
-  { key: 'dividends_paid', label: 'Dividends Paid', category: 'financing', order: 70, unit: 'currency', localNames: ['PaymentsOfDividends', 'PaymentsOfDividendsCommonStock'], labelIncludes: ['dividends paid'] },
-  { key: 'debt_issued', label: 'Debt Issued', category: 'financing', order: 80, unit: 'currency', localNames: ['ProceedsFromIssuanceOfLongTermDebt'], labelIncludes: ['debt issued'] },
-  { key: 'debt_repaid', label: 'Debt Repaid', category: 'financing', order: 90, unit: 'currency', localNames: ['RepaymentsOfLongTermDebt', 'RepaymentsOfDebt'], labelIncludes: ['debt repaid', 'repayment of debt'] }
-];
-
 export const CANONICAL_ROW_DEFINITIONS: Record<Extract<FinancialStatementKind, 'income' | 'balance' | 'cash_flow'>, CanonicalRowDefinition[]> = {
-  income: INCOME_DEFINITIONS,
-  balance: BALANCE_DEFINITIONS,
-  cash_flow: CASH_FLOW_DEFINITIONS
+  income: INCOME_STATEMENT_METRIC_DEFINITIONS,
+  balance: BALANCE_SHEET_METRIC_DEFINITIONS,
+  cash_flow: CASH_FLOW_STATEMENT_METRIC_DEFINITIONS
 };
diff --git a/lib/server/financials/ratios.ts b/lib/server/financials/ratios.ts
index 1e85a08..9877422 100644
--- a/lib/server/financials/ratios.ts
+++ b/lib/server/financials/ratios.ts
@@ -4,6 +4,10 @@ import type {
   RatioRow,
   StandardizedFinancialRow
 } from '@/lib/types';
+import {
+  RATIO_CATEGORY_ORDER,
+  RATIO_DEFINITIONS
+} from '@/lib/financial-metrics';
 
 type StatementRowMap = {
   income: StandardizedFinancialRow[];
@@ -11,50 +15,6 @@ type StatementRowMap = {
   cashFlow: StandardizedFinancialRow[];
 };
 
-type RatioDefinition = {
-  key: string;
-  label: string;
-  category: string;
-  order: number;
-  unit: RatioRow['unit'];
-  denominatorKey: string | null;
-};
-
-const RATIO_DEFINITIONS: RatioDefinition[] = [
-  { key: 'gross_margin', label: 'Gross Margin', category: 'margins', order: 10, unit: 'percent', denominatorKey: 'revenue' },
-  { key: 'operating_margin', label: 'Operating Margin', category: 'margins', order: 20, unit: 'percent', denominatorKey: 'revenue' },
-  { key: 'ebitda_margin', label: 'EBITDA Margin', category: 'margins', order: 30, unit: 'percent', denominatorKey: 'revenue' },
-  { key: 'net_margin', label: 'Net Margin', category: 'margins', order: 40, unit: 'percent', denominatorKey: 'revenue' },
-  { key: 'fcf_margin', label: 'FCF Margin', category: 'margins', order: 50, unit: 'percent', denominatorKey: 'revenue' },
-  { key: 'roa', label: 'ROA', category: 'returns', order: 60, unit: 'percent', denominatorKey: 'total_assets' },
-  { key: 'roe', label: 'ROE', category: 'returns', order: 70, unit: 'percent', denominatorKey: 'total_equity' },
-  { key: 'roic', label: 'ROIC', category: 'returns', order: 80, unit: 'percent', denominatorKey: 'average_invested_capital' },
-  { key: 'roce', label: 'ROCE', category: 'returns', order: 90, unit: 'percent', denominatorKey: 'average_capital_employed' },
-  { key: 'debt_to_equity', label: 'Debt to Equity', category: 'financial_health', order: 100, unit: 'ratio', denominatorKey: 'total_equity' },
-  { key: 'net_debt_to_ebitda', label: 'Net Debt to EBITDA', category: 'financial_health', order: 110, unit: 'ratio', denominatorKey: 'ebitda' },
-  { key: 'cash_to_debt', label: 'Cash to Debt', category: 'financial_health', order: 120, unit: 'ratio', denominatorKey: 'total_debt' },
-  { key: 'current_ratio', label: 'Current Ratio', category: 'financial_health', order: 130, unit: 'ratio', denominatorKey: 'current_liabilities' },
-  { key: 'revenue_per_share', label: 'Revenue per Share', category: 'per_share', order: 140, unit: 'currency', denominatorKey: 'diluted_shares' },
-  { key: 'fcf_per_share', label: 'FCF per Share', category: 'per_share', order: 150, unit: 'currency', denominatorKey: 'diluted_shares' },
-  { key: 'book_value_per_share', label: 'Book Value per Share', category: 'per_share', order: 160, unit: 'currency', denominatorKey: 'diluted_shares' },
-  { key: 'revenue_yoy', label: 'Revenue YoY', category: 'growth', order: 170, unit: 'percent', denominatorKey: 'revenue' },
-  { key: 'net_income_yoy', label: 'Net Income YoY', category: 'growth', order: 180, unit: 'percent', denominatorKey: 'net_income' },
-  { key: 'eps_yoy', label: 'EPS YoY', category: 'growth', order: 190, unit: 'percent', denominatorKey: 'diluted_eps' },
-  { key: 'fcf_yoy', label: 'FCF YoY', category: 'growth', order: 200, unit: 'percent', denominatorKey: 'free_cash_flow' },
-  { key: '3y_revenue_cagr', label: '3Y Revenue CAGR', category: 'growth', order: 210, unit: 'percent', denominatorKey: 'revenue' },
-  { key: '5y_revenue_cagr', label: '5Y Revenue CAGR', category: 'growth', order: 220, unit: 'percent', denominatorKey: 'revenue' },
-  { key: '3y_eps_cagr', label: '3Y EPS CAGR', category: 'growth', order: 230, unit: 'percent', denominatorKey: 'diluted_eps' },
-  { key: '5y_eps_cagr', label: '5Y EPS CAGR', category: 'growth', order: 240, unit: 'percent', denominatorKey: 'diluted_eps' },
-  { key: 'market_cap', label: 'Market Cap', category: 'valuation', order: 250, unit: 'currency', denominatorKey: null },
-  { key: 'enterprise_value', label: 'Enterprise Value', category: 'valuation', order: 260, unit: 'currency', denominatorKey: null },
-  { key: 'price_to_earnings', label: 'Price to Earnings', category: 'valuation', order: 270, unit: 'ratio', denominatorKey: 'diluted_eps' },
-  { key: 'price_to_fcf', label: 'Price to FCF', category: 'valuation', order: 280, unit: 'ratio', denominatorKey: 'free_cash_flow' },
-  { key: 'price_to_book', label: 'Price to Book', category: 'valuation', order: 290, unit: 'ratio', denominatorKey: 'total_equity' },
-  { key: 'ev_to_sales', label: 'EV to Sales', category: 'valuation', order: 300, unit: 'ratio', denominatorKey: 'revenue' },
-  { key: 'ev_to_ebitda', label: 'EV to EBITDA', category: 'valuation', order: 310, unit: 'ratio', denominatorKey: 'ebitda' },
-  { key: 'ev_to_fcf', label: 'EV to FCF', category: 'valuation', order: 320, unit: 'ratio', denominatorKey: 'free_cash_flow' }
-];
-
 function valueFor(row: StandardizedFinancialRow | undefined, periodId: string) {
   return row?.values[periodId] ?? null;
 }
@@ -358,12 +318,3 @@ export function buildRatioRows(input: {
     return true;
   });
 }
-
-export const RATIO_CATEGORY_ORDER = [
-  'margins',
-  'returns',
-  'financial_health',
-  'per_share',
-  'growth',
-  'valuation'
-] as const;
diff --git a/lib/server/financials/trend-series.ts b/lib/server/financials/trend-series.ts
index 8b966eb..d3f3e4b 100644
--- a/lib/server/financials/trend-series.ts
+++ b/lib/server/financials/trend-series.ts
@@ -5,8 +5,8 @@ import type {
   StructuredKpiRow,
   TrendSeries
 } from '@/lib/types';
+import { RATIO_CATEGORY_ORDER } from '@/lib/financial-metrics';
 import { KPI_CATEGORY_ORDER } from '@/lib/server/financials/kpi-registry';
-import { RATIO_CATEGORY_ORDER } from '@/lib/server/financials/ratios';
 
 function toTrendSeriesRow(row: {
   key: string;
diff --git a/lib/server/repos/research-journal.ts b/lib/server/repos/research-journal.ts
index 5cce430..f2b5385 100644
--- a/lib/server/repos/research-journal.ts
+++ b/lib/server/repos/research-journal.ts
@@ -1,148 +1,6 @@
-import { and, desc, eq } from 'drizzle-orm';
-import type {
-  ResearchJournalEntry,
-  ResearchJournalEntryType
-} from '@/lib/types';
-import { db } from '@/lib/server/db';
-import { researchJournalEntry } from '@/lib/server/db/schema';
-
-type ResearchJournalRow = typeof researchJournalEntry.$inferSelect;
-
-function normalizeTicker(ticker: string) {
-  return ticker.trim().toUpperCase();
-}
-
-function normalizeTitle(title?: string | null) {
-  const normalized = title?.trim();
-  return normalized ? normalized : null;
-}
-
-function normalizeAccessionNumber(accessionNumber?: string | null) {
-  const normalized = accessionNumber?.trim();
-  return normalized ? normalized : null;
-}
-
-function normalizeMetadata(metadata?: Record<string, unknown> | null) {
-  if (!metadata || typeof metadata !== 'object' || Array.isArray(metadata)) {
-    return null;
-  }
-
-  return metadata;
-}
-
-function toResearchJournalEntry(row: ResearchJournalRow): ResearchJournalEntry {
-  return {
-    id: row.id,
-    user_id: row.user_id,
-    ticker: row.ticker,
-    accession_number: row.accession_number ?? null,
-    entry_type: row.entry_type,
-    title: row.title ?? null,
-    body_markdown: row.body_markdown,
-    metadata: row.metadata ?? null,
-    created_at: row.created_at,
-    updated_at: row.updated_at
-  };
-}
-
-export async function listResearchJournalEntries(userId: string, ticker: string, limit = 100) {
-  const normalizedTicker = normalizeTicker(ticker);
-  if (!normalizedTicker) {
-    return [];
-  }
-
-  const safeLimit = Math.min(Math.max(Math.trunc(limit), 1), 250);
-  const rows = await db
-    .select()
-    .from(researchJournalEntry)
-    .where(and(eq(researchJournalEntry.user_id, userId), eq(researchJournalEntry.ticker, normalizedTicker)))
-    .orderBy(desc(researchJournalEntry.created_at), desc(researchJournalEntry.id))
-    .limit(safeLimit);
-
-  return rows.map(toResearchJournalEntry);
-}
-
-export async function createResearchJournalEntryRecord(input: {
-  userId: string;
-  ticker: string;
-  accessionNumber?: string | null;
-  entryType: ResearchJournalEntryType;
-  title?: string | null;
-  bodyMarkdown: string;
-  metadata?: Record<string, unknown> | null;
-}) {
-  const ticker = normalizeTicker(input.ticker);
-  const bodyMarkdown = input.bodyMarkdown.trim();
-  if (!ticker) {
-    throw new Error('ticker is required');
-  }
-
-  if (!bodyMarkdown) {
-    throw new Error('bodyMarkdown is required');
-  }
-
-  const now = new Date().toISOString();
-  const [created] = await db
-    .insert(researchJournalEntry)
-    .values({
-      user_id: input.userId,
-      ticker,
-      accession_number: normalizeAccessionNumber(input.accessionNumber),
-      entry_type: input.entryType,
-      title: normalizeTitle(input.title),
-      body_markdown: bodyMarkdown,
-      metadata: normalizeMetadata(input.metadata),
-      created_at: now,
-      updated_at: now
-    })
-    .returning();
-
-  return toResearchJournalEntry(created);
-}
-
-export async function updateResearchJournalEntryRecord(input: {
-  userId: string;
-  id: number;
-  title?: string | null;
-  bodyMarkdown?: string;
-  metadata?: Record<string, unknown> | null;
-}) {
-  const [existing] = await db
-    .select()
-    .from(researchJournalEntry)
-    .where(and(eq(researchJournalEntry.user_id, input.userId), eq(researchJournalEntry.id, input.id)))
-    .limit(1);
-
-  if (!existing) {
-    return null;
-  }
-
-  const nextBodyMarkdown = input.bodyMarkdown === undefined
-    ? existing.body_markdown
-    : input.bodyMarkdown.trim();
-  if (!nextBodyMarkdown) {
-    throw new Error('bodyMarkdown is required');
-  }
-
-  const [updated] = await db
-    .update(researchJournalEntry)
-    .set({
-      title: input.title === undefined ? existing.title : normalizeTitle(input.title),
-      body_markdown: nextBodyMarkdown,
-      metadata: input.metadata === undefined ? existing.metadata ?? null : normalizeMetadata(input.metadata),
-      updated_at: new Date().toISOString()
-    })
-    .where(and(eq(researchJournalEntry.user_id, input.userId), eq(researchJournalEntry.id, input.id)))
-    .returning();
-
-  return updated ? toResearchJournalEntry(updated) : null;
-}
-
-export async function deleteResearchJournalEntryRecord(userId: string, id: number) {
-  const rows = await db
-    .delete(researchJournalEntry)
-    .where(and(eq(researchJournalEntry.user_id, userId), eq(researchJournalEntry.id, id)))
-    .returning({ id: researchJournalEntry.id });
-
-  return rows.length > 0;
-}
+export {
+  createResearchJournalEntryCompat as createResearchJournalEntryRecord,
+  deleteResearchJournalEntryCompat as deleteResearchJournalEntryRecord,
+  listResearchJournalEntriesCompat as listResearchJournalEntries,
+  updateResearchJournalEntryCompat as updateResearchJournalEntryRecord
+} from '@/lib/server/repos/research-library';
diff --git a/lib/server/repos/research-library.ts b/lib/server/repos/research-library.ts
new file mode 100644
index 0000000..a6f8ea0
--- /dev/null
+++ b/lib/server/repos/research-library.ts
@@ -0,0 +1,1122 @@
+import { randomUUID } from 'node:crypto';
+import { mkdir, readFile, rm, writeFile } from 'node:fs/promises';
+import { dirname, extname, join } from 'node:path';
+import { and, asc, desc, eq, sql } from 'drizzle-orm';
+import type {
+  ResearchArtifact,
+  ResearchArtifactKind,
+  ResearchArtifactSource,
+  ResearchJournalEntry,
+  ResearchJournalEntryType,
+  ResearchLibraryResponse,
+  ResearchMemo,
+  ResearchMemoConviction,
+  ResearchMemoEvidenceLink,
+  ResearchMemoRating,
+  ResearchMemoSection,
+  ResearchPacket,
+  ResearchPacketSection,
+  ResearchVisibilityScope,
+  ResearchWorkspace
+} from '@/lib/types';
+import { db, getSqliteClient } from '@/lib/server/db';
+import {
+  researchArtifact,
+  researchMemo,
+  researchMemoEvidence
+} from '@/lib/server/db/schema';
+import { getFilingByAccession, listFilingsRecords } from '@/lib/server/repos/filings';
+import { getWatchlistItemByTicker } from '@/lib/server/repos/watchlist';
+
+type ResearchArtifactRow = typeof researchArtifact.$inferSelect;
+type ResearchMemoRow = typeof researchMemo.$inferSelect;
+type ResearchMemoEvidenceRow = typeof researchMemoEvidence.$inferSelect;
+
+type ArtifactListFilters = {
+  ticker: string;
+  q?: string | null;
+  kind?: ResearchArtifactKind | null;
+  tag?: string | null;
+  source?: ResearchArtifactSource | null;
+  linkedToMemo?: boolean | null;
+  limit?: number;
+};
+
+const RESEARCH_PACKET_SECTION_TITLES: Record<ResearchMemoSection, string> = {
+  thesis: 'Core Thesis',
+  variant_view: 'Variant View',
+  catalysts: 'Catalysts',
+  risks: 'Risks',
+  disconfirming_evidence: 'Disconfirming Evidence',
+  next_actions: 'Next Actions'
+};
+
+function normalizeTicker(ticker: string) {
+  return ticker.trim().toUpperCase();
+}
+
+function normalizeOptionalString(value?: string | null) {
+  const normalized = value?.trim();
+  return normalized ? normalized : null;
+}
+
+function normalizePositiveInteger(value?: number | null) {
+  if (value === null || value === undefined || !Number.isFinite(value)) {
+    return null;
+  }
+
+  const normalized = Math.trunc(value);
+  return normalized > 0 ? normalized : null;
+}
+
+function normalizeRecord(value?: Record<string, unknown> | null) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) {
+    return null;
+  }
+
+  return value;
+}
+
+function normalizeTags(tags?: string[] | null) {
+  if (!Array.isArray(tags)) {
+    return [];
+  }
+
+  const unique = new Set<string>();
+
+  for (const entry of tags) {
+    if (typeof entry !== 'string') {
+      continue;
+    }
+
+    const normalized = entry.trim();
+    if (!normalized) {
+      continue;
+    }
+
+    unique.add(normalized);
+  }
+
+  return [...unique];
+}
+
+function buildArtifactSearchText(input: {
+  title?: string | null;
+  summary?: string | null;
+  bodyMarkdown?: string | null;
+  fileName?: string | null;
+  subtype?: string | null;
+  metadata?: Record<string, unknown> | null;
+}) {
+  const parts = [
+    normalizeOptionalString(input.title),
+    normalizeOptionalString(input.summary),
+    normalizeOptionalString(input.bodyMarkdown),
+    normalizeOptionalString(input.fileName),
+    normalizeOptionalString(input.subtype),
+    input.metadata ? JSON.stringify(input.metadata) : null
+  ].filter((value): value is string => Boolean(value));
+
+  return parts.length > 0 ? parts.join('\n') : null;
+}
+
+function toResearchArtifact(row: ResearchArtifactRow, linkedToMemo = false): ResearchArtifact {
+  return {
+    id: row.id,
+    user_id: row.user_id,
+    organization_id: row.organization_id ?? null,
+    ticker: row.ticker,
+    accession_number: row.accession_number ?? null,
+    kind: row.kind,
+    source: row.source,
+    subtype: row.subtype ?? null,
+    title: row.title ?? null,
+    summary: row.summary ?? null,
+    body_markdown: row.body_markdown ?? null,
+    search_text: row.search_text ?? null,
+    visibility_scope: row.visibility_scope,
+    tags: normalizeTags(row.tags ?? []),
+    metadata: row.metadata ?? null,
+    file_name: row.file_name ?? null,
+    mime_type: row.mime_type ?? null,
+    file_size_bytes: row.file_size_bytes ?? null,
+    storage_path: row.storage_path ?? null,
+    created_at: row.created_at,
+    updated_at: row.updated_at,
+    linked_to_memo: linkedToMemo
+  };
+}
+
+function toResearchMemo(row: ResearchMemoRow): ResearchMemo {
+  return {
+    id: row.id,
+    user_id: row.user_id,
+    organization_id: row.organization_id ?? null,
+    ticker: row.ticker,
+    rating: row.rating ?? null,
+    conviction: row.conviction ?? null,
+    time_horizon_months: row.time_horizon_months ?? null,
+    packet_title: row.packet_title ?? null,
+    packet_subtitle: row.packet_subtitle ?? null,
+    thesis_markdown: row.thesis_markdown,
+    variant_view_markdown: row.variant_view_markdown,
+    catalysts_markdown: row.catalysts_markdown,
+    risks_markdown: row.risks_markdown,
+    disconfirming_evidence_markdown: row.disconfirming_evidence_markdown,
+    next_actions_markdown: row.next_actions_markdown,
+    created_at: row.created_at,
+    updated_at: row.updated_at
+  };
+}
+
+function toJournalType(kind: ResearchArtifactKind, accessionNumber: string | null): ResearchJournalEntryType | null {
+  if (kind === 'status_change') {
+    return 'status_change';
+  }
+
+  if (kind === 'note') {
+    return accessionNumber ? 'filing_note' : 'note';
+  }
+
+  if (kind === 'filing' || kind === 'ai_report') {
+    return 'filing_note';
+  }
+
+  return null;
+}
+
+function toResearchJournalEntry(artifact: ResearchArtifact): ResearchJournalEntry | null {
+  const entryType = toJournalType(artifact.kind, artifact.accession_number);
+  if (!entryType) {
+    return null;
+  }
+
+  return {
+    id: artifact.id,
+    user_id: artifact.user_id,
+    ticker: artifact.ticker,
+    accession_number: artifact.accession_number,
+    entry_type: entryType,
+    title: artifact.title,
+    body_markdown: artifact.body_markdown ?? artifact.summary ?? '',
+    metadata: artifact.metadata,
+    created_at: artifact.created_at,
+    updated_at: artifact.updated_at
+  };
+}
+
+function toPacketSections(
+  memo: ResearchMemo | null,
+  evidenceBySection: Map<ResearchMemoSection, ResearchMemoEvidenceLink[]>
+): ResearchPacketSection[] {
+  const bodyBySection: Record<ResearchMemoSection, string> = {
+    thesis: memo?.thesis_markdown ?? '',
+    variant_view: memo?.variant_view_markdown ?? '',
+    catalysts: memo?.catalysts_markdown ?? '',
+    risks: memo?.risks_markdown ?? '',
+    disconfirming_evidence: memo?.disconfirming_evidence_markdown ?? '',
+    next_actions: memo?.next_actions_markdown ?? ''
+  };
+
+  return (Object.keys(RESEARCH_PACKET_SECTION_TITLES) as ResearchMemoSection[]).map((section) => ({
+    section,
+    title: RESEARCH_PACKET_SECTION_TITLES[section],
+    body_markdown: bodyBySection[section],
+    evidence: evidenceBySection.get(section) ?? []
+  }));
+}
+
+function safeFileName(fileName: string) {
+  const normalized = fileName
+    .trim()
+    .replace(/[^a-zA-Z0-9._-]+/g, '-')
+    .replace(/-+/g, '-')
+    .replace(/^-+|-+$/g, '');
+
+  return normalized || 'research-file';
+}
+
+function getUploadsRoot() {
+  return join(process.cwd(), 'data', 'research-uploads');
+}
+
+function syncArtifactSearchIndex(artifactId: number) {
+  const client = getSqliteClient();
+
+  client.query('DELETE FROM `research_artifact_fts` WHERE `artifact_id` = ?').run(artifactId);
+
+  const row = client.query(`
+    SELECT
+      id,
+      user_id,
+      ticker,
+      title,
+      summary,
+      body_markdown,
+      search_text,
+      tags
+    FROM research_artifact
+    WHERE id = ?
+    LIMIT 1
+  `).get(artifactId) as {
+    id: number;
+    user_id: string;
+    ticker: string;
+    title: string | null;
+    summary: string | null;
+    body_markdown: string | null;
+    search_text: string | null;
+    tags: string | null;
+  } | null;
+
+  if (!row) {
+    return;
+  }
+
+  let tagsText = '';
+  try {
+    const parsed = JSON.parse(row.tags ?? '[]');
+    if (Array.isArray(parsed)) {
+      tagsText = parsed.filter((entry): entry is string => typeof entry === 'string').join(' ');
+    }
+  } catch {
+    tagsText = '';
+  }
+
+  client.query(`
+    INSERT INTO research_artifact_fts (
+      artifact_id,
+      user_id,
+      ticker,
+      title,
+      summary,
+      body_markdown,
+      search_text,
+      tags_text
+    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+  `).run(
+    row.id,
+    row.user_id,
+    row.ticker,
+    row.title ?? '',
+    row.summary ?? '',
+    row.body_markdown ?? '',
+    row.search_text ?? '',
+    tagsText
+  );
+}
+
+function rebuildArtifactSearchIndex() {
+  const client = getSqliteClient();
+
+  client.exec('DELETE FROM `research_artifact_fts`;');
+  client.exec(`
+    INSERT INTO research_artifact_fts (
+      artifact_id,
+      user_id,
+      ticker,
+      title,
+      summary,
+      body_markdown,
+      search_text,
+      tags_text
+    )
+    SELECT
+      id,
+      user_id,
+      ticker,
+      COALESCE(title, ''),
+      COALESCE(summary, ''),
+      COALESCE(body_markdown, ''),
+      COALESCE(search_text, ''),
+      CASE
+        WHEN tags IS NULL OR TRIM(tags) = '' THEN ''
+        ELSE REPLACE(REPLACE(REPLACE(tags, '[', ''), ']', ''), '\"', '')
+      END
+    FROM research_artifact
+  `);
+}
+
+function toArtifactOrder(rows: ResearchArtifactRow[], order: number[]) {
+  const byId = new Map(rows.map((row) => [row.id, row]));
+  return order.map((id) => byId.get(id)).filter((row): row is ResearchArtifactRow => Boolean(row));
+}
+
+async function listMemoLinkedArtifactIds(userId: string, ticker: string) {
+  const rows = await db
+    .select({
+      artifactId: researchMemoEvidence.artifact_id
+    })
+    .from(researchMemoEvidence)
+    .innerJoin(researchMemo, eq(researchMemoEvidence.memo_id, researchMemo.id))
+    .where(and(eq(researchMemo.user_id, userId), eq(researchMemo.ticker, ticker)));
+
+  return new Set(rows.map((row) => row.artifactId));
+}
+
+async function listMemoEvidenceRows(memoId: number) {
+  const rows = await db
+    .select()
+    .from(researchMemoEvidence)
+    .where(eq(researchMemoEvidence.memo_id, memoId))
+    .orderBy(asc(researchMemoEvidence.section), asc(researchMemoEvidence.sort_order), asc(researchMemoEvidence.id));
+
+  return rows;
+}
+
+async function getArtifactByIdForUser(id: number, userId: string) {
+  const [row] = await db
+    .select()
+    .from(researchArtifact)
+    .where(and(eq(researchArtifact.id, id), eq(researchArtifact.user_id, userId)))
+    .limit(1);
+
+  return row ?? null;
+}
+
+async function getMemoByIdForUser(id: number, userId: string) {
+  const [row] = await db
+    .select()
+    .from(researchMemo)
+    .where(and(eq(researchMemo.id, id), eq(researchMemo.user_id, userId)))
+    .limit(1);
+
+  return row ?? null;
+}
+
+export async function createResearchArtifactRecord(input: {
+  userId: string;
+  organizationId?: string | null;
+  ticker: string;
+  accessionNumber?: string | null;
+  kind: ResearchArtifactKind;
+  source?: ResearchArtifactSource;
+  subtype?: string | null;
+  title?: string | null;
+  summary?: string | null;
+  bodyMarkdown?: string | null;
+  searchText?: string | null;
+  visibilityScope?: ResearchVisibilityScope;
+  tags?: string[];
+  metadata?: Record<string, unknown> | null;
+  fileName?: string | null;
+  mimeType?: string | null;
+  fileSizeBytes?: number | null;
+  storagePath?: string | null;
+}) {
+  const ticker = normalizeTicker(input.ticker);
+  if (!ticker) {
+    throw new Error('ticker is required');
+  }
+
+  const now = new Date().toISOString();
+  const title = normalizeOptionalString(input.title);
+  const summary = normalizeOptionalString(input.summary);
+  const bodyMarkdown = normalizeOptionalString(input.bodyMarkdown);
+  const subtype = normalizeOptionalString(input.subtype);
+  const metadata = normalizeRecord(input.metadata);
+  const fileName = normalizeOptionalString(input.fileName);
+  const mimeType = normalizeOptionalString(input.mimeType);
+  const searchText = normalizeOptionalString(input.searchText)
+    ?? buildArtifactSearchText({
+      title,
+      summary,
+      bodyMarkdown,
+      fileName,
+      subtype,
+      metadata
+    });
+
+  const [created] = await db
+    .insert(researchArtifact)
+    .values({
+      user_id: input.userId,
+      organization_id: normalizeOptionalString(input.organizationId),
+      ticker,
+      accession_number: normalizeOptionalString(input.accessionNumber),
+      kind: input.kind,
+      source: input.source ?? 'user',
+      subtype,
+      title,
+      summary,
+      body_markdown: bodyMarkdown,
+      search_text: searchText,
+      visibility_scope: input.visibilityScope ?? 'private',
+      tags: normalizeTags(input.tags),
+      metadata,
+      file_name: fileName,
+      mime_type: mimeType,
+      file_size_bytes: normalizePositiveInteger(input.fileSizeBytes),
+      storage_path: normalizeOptionalString(input.storagePath),
+      created_at: now,
+      updated_at: now
+    })
+    .returning();
+
+  syncArtifactSearchIndex(created.id);
+  return toResearchArtifact(created);
+}
+
+export async function upsertSystemResearchArtifact(input: {
+  userId: string;
+  organizationId?: string | null;
+  ticker: string;
+  accessionNumber?: string | null;
+  kind: Extract<ResearchArtifactKind, 'ai_report' | 'filing' | 'status_change'>;
+  subtype?: string | null;
+  title?: string | null;
+  summary?: string | null;
+  bodyMarkdown?: string | null;
+  tags?: string[];
+  metadata?: Record<string, unknown> | null;
+}) {
+  const ticker = normalizeTicker(input.ticker);
+  const accessionNumber = normalizeOptionalString(input.accessionNumber);
+  const title = normalizeOptionalString(input.title);
+  const [existing] = await db
+    .select()
+    .from(researchArtifact)
+    .where(and(
+      eq(researchArtifact.user_id, input.userId),
+      eq(researchArtifact.ticker, ticker),
+      eq(researchArtifact.kind, input.kind),
+      accessionNumber
+        ? eq(researchArtifact.accession_number, accessionNumber)
+        : sql`1 = 1`,
+      title
+        ? eq(researchArtifact.title, title)
+        : sql`1 = 1`
+    ))
+    .orderBy(desc(researchArtifact.updated_at))
+    .limit(1);
+
+  if (!existing) {
+    return await createResearchArtifactRecord({
+      ...input,
+      ticker,
+      accessionNumber,
+      title,
+      source: 'system',
+      visibilityScope: 'private'
+    });
+  }
+
+  const searchText = buildArtifactSearchText({
+    title,
+    summary: input.summary,
+    bodyMarkdown: input.bodyMarkdown,
+    subtype: input.subtype,
+    metadata: input.metadata
+  });
+
+  const [updated] = await db
+    .update(researchArtifact)
+    .set({
+      organization_id: normalizeOptionalString(input.organizationId) ?? existing.organization_id ?? null,
+      subtype: normalizeOptionalString(input.subtype),
+      title,
+      summary: normalizeOptionalString(input.summary),
+      body_markdown: normalizeOptionalString(input.bodyMarkdown),
+      search_text: searchText,
+      tags: normalizeTags(input.tags),
+      metadata: normalizeRecord(input.metadata),
+      updated_at: new Date().toISOString()
+    })
+    .where(eq(researchArtifact.id, existing.id))
+    .returning();
+
+  syncArtifactSearchIndex(updated.id);
+  return toResearchArtifact(updated);
+}
+
+export async function updateResearchArtifactRecord(input: {
+  userId: string;
+  id: number;
+  title?: string | null;
+  summary?: string | null;
+  bodyMarkdown?: string | null;
+  tags?: string[];
+  metadata?: Record<string, unknown> | null;
+}) {
+  const existing = await getArtifactByIdForUser(input.id, input.userId);
+  if (!existing) {
+    return null;
+  }
+
+  const title = input.title === undefined ? existing.title : normalizeOptionalString(input.title);
+  const summary = input.summary === undefined ? existing.summary : normalizeOptionalString(input.summary);
+  const bodyMarkdown = input.bodyMarkdown === undefined ? existing.body_markdown : normalizeOptionalString(input.bodyMarkdown);
+  const metadata = input.metadata === undefined ? existing.metadata ?? null : normalizeRecord(input.metadata);
+  const tags = input.tags === undefined ? normalizeTags(existing.tags ?? []) : normalizeTags(input.tags);
+  const searchText = buildArtifactSearchText({
+    title,
+    summary,
+    bodyMarkdown,
+    fileName: existing.file_name,
+    subtype: existing.subtype,
+    metadata
+  });
+
+  const [updated] = await db
+    .update(researchArtifact)
+    .set({
+      title,
+      summary,
+      body_markdown: bodyMarkdown,
+      metadata,
+      tags,
+      search_text: searchText,
+      updated_at: new Date().toISOString()
+    })
+    .where(eq(researchArtifact.id, input.id))
+    .returning();
+
+  syncArtifactSearchIndex(updated.id);
+  return toResearchArtifact(updated);
+}
+
+export async function deleteResearchArtifactRecord(userId: string, id: number) {
+  const existing = await getArtifactByIdForUser(id, userId);
+  if (!existing) {
+    return false;
+  }
+
+  await db
+    .delete(researchArtifact)
+    .where(and(eq(researchArtifact.id, id), eq(researchArtifact.user_id, userId)));
+
+  syncArtifactSearchIndex(id);
+
+  if (existing.storage_path) {
+    await rm(existing.storage_path, { force: true }).catch(() => undefined);
+  }
+
+  return true;
+}
+
+export async function listResearchArtifacts(userId: string, filters: ArtifactListFilters): Promise<ResearchLibraryResponse> {
+  const ticker = normalizeTicker(filters.ticker);
+  if (!ticker) {
+    return { artifacts: [], availableTags: [] };
+  }
+
+  const limit = Math.min(Math.max(Math.trunc(filters.limit ?? 100), 1), 250);
+  const client = getSqliteClient();
+  const linkedIds = await listMemoLinkedArtifactIds(userId, ticker);
+  const normalizedKind = filters.kind ?? null;
+  const normalizedTag = normalizeOptionalString(filters.tag);
+  const normalizedSource = filters.source ?? null;
+  const normalizedQuery = normalizeOptionalString(filters.q);
+  const linkedOnly = filters.linkedToMemo ?? null;
+
+  let artifactRows: ResearchArtifactRow[] = [];
+
+  if (normalizedQuery) {
+    const ids = client.query(`
+      SELECT artifact_id AS id
+      FROM research_artifact_fts
+      WHERE research_artifact_fts MATCH ?
+        AND user_id = ?
+        AND ticker = ?
+      ORDER BY bm25(research_artifact_fts), rowid DESC
+      LIMIT ?
+    `).all(normalizedQuery, userId, ticker, Math.max(limit * 3, 60)) as Array<{ id: number }>;
+
+    const orderedIds = ids.map((row) => row.id);
+    if (orderedIds.length > 0) {
+      const rows = await db
+        .select()
+        .from(researchArtifact)
+        .where(sql`${researchArtifact.id} in (${sql.join(orderedIds.map((id) => sql`${id}`), sql`, `)})`);
+      artifactRows = toArtifactOrder(rows, orderedIds);
+    }
+  } else {
+    const rows = await db
+      .select()
+      .from(researchArtifact)
+      .where(and(eq(researchArtifact.user_id, userId), eq(researchArtifact.ticker, ticker)))
+      .orderBy(desc(researchArtifact.updated_at), desc(researchArtifact.id))
+      .limit(Math.max(limit * 3, 60));
+    artifactRows = rows;
+  }
+
+  const filteredArtifacts = artifactRows
+    .filter((row) => normalizedKind === null || row.kind === normalizedKind)
+    .filter((row) => normalizedSource === null || row.source === normalizedSource)
+    .filter((row) => normalizedTag === null || normalizeTags(row.tags ?? []).includes(normalizedTag))
+    .filter((row) => linkedOnly === null || linkedIds.has(row.id) === linkedOnly)
+    .slice(0, limit)
+    .map((row) => toResearchArtifact(row, linkedIds.has(row.id)));
+
+  const allRowsForTags = await db
+    .select({ tags: researchArtifact.tags })
+    .from(researchArtifact)
+    .where(and(eq(researchArtifact.user_id, userId), eq(researchArtifact.ticker, ticker)));
+
+  const tagSet = new Set<string>();
+  for (const row of allRowsForTags) {
+    for (const tag of normalizeTags(row.tags ?? [])) {
+      tagSet.add(tag);
+    }
+  }
+
+  return {
+    artifacts: filteredArtifacts,
+    availableTags: [...tagSet].sort((a, b) => a.localeCompare(b))
+  };
+}
+
+export async function getResearchMemoByTicker(userId: string, ticker: string) {
+  const normalizedTicker = normalizeTicker(ticker);
+  if (!normalizedTicker) {
+    return null;
+  }
+
+  const [row] = await db
+    .select()
+    .from(researchMemo)
+    .where(and(eq(researchMemo.user_id, userId), eq(researchMemo.ticker, normalizedTicker)))
+    .limit(1);
+
+  return row ? toResearchMemo(row) : null;
+}
+
+export async function upsertResearchMemoRecord(input: {
+  userId: string;
+  organizationId?: string | null;
+  ticker: string;
+  rating?: ResearchMemoRating | null;
+  conviction?: ResearchMemoConviction | null;
+  timeHorizonMonths?: number | null;
+  packetTitle?: string | null;
+  packetSubtitle?: string | null;
+  thesisMarkdown?: string;
+  variantViewMarkdown?: string;
+  catalystsMarkdown?: string;
+  risksMarkdown?: string;
+  disconfirmingEvidenceMarkdown?: string;
+  nextActionsMarkdown?: string;
+}) {
+  const ticker = normalizeTicker(input.ticker);
+  if (!ticker) {
+    throw new Error('ticker is required');
+  }
+
+  const now = new Date().toISOString();
+  const existing = await getResearchMemoByTicker(input.userId, ticker);
+
+  if (!existing) {
+    const [created] = await db
+      .insert(researchMemo)
+      .values({
+        user_id: input.userId,
+        organization_id: normalizeOptionalString(input.organizationId),
+        ticker,
+        rating: input.rating ?? null,
+        conviction: input.conviction ?? null,
+        time_horizon_months: normalizePositiveInteger(input.timeHorizonMonths),
+        packet_title: normalizeOptionalString(input.packetTitle),
+        packet_subtitle: normalizeOptionalString(input.packetSubtitle),
+        thesis_markdown: input.thesisMarkdown?.trim() ?? '',
+        variant_view_markdown: input.variantViewMarkdown?.trim() ?? '',
+        catalysts_markdown: input.catalystsMarkdown?.trim() ?? '',
+        risks_markdown: input.risksMarkdown?.trim() ?? '',
+        disconfirming_evidence_markdown: input.disconfirmingEvidenceMarkdown?.trim() ?? '',
+        next_actions_markdown: input.nextActionsMarkdown?.trim() ?? '',
+        created_at: now,
+        updated_at: now
+      })
+      .returning();
+
+    return toResearchMemo(created);
+  }
+
+  const [updated] = await db
+    .update(researchMemo)
+    .set({
+      organization_id: normalizeOptionalString(input.organizationId) ?? existing.organization_id,
+      rating: input.rating === undefined ? existing.rating : input.rating,
+      conviction: input.conviction === undefined ? existing.conviction : input.conviction,
+      time_horizon_months: input.timeHorizonMonths === undefined
+        ? existing.time_horizon_months
+        : normalizePositiveInteger(input.timeHorizonMonths),
+      packet_title: input.packetTitle === undefined ? existing.packet_title : normalizeOptionalString(input.packetTitle),
+      packet_subtitle: input.packetSubtitle === undefined ? existing.packet_subtitle : normalizeOptionalString(input.packetSubtitle),
+      thesis_markdown: input.thesisMarkdown === undefined ? existing.thesis_markdown : input.thesisMarkdown.trim(),
+      variant_view_markdown: input.variantViewMarkdown === undefined ? existing.variant_view_markdown : input.variantViewMarkdown.trim(),
+      catalysts_markdown: input.catalystsMarkdown === undefined ? existing.catalysts_markdown : input.catalystsMarkdown.trim(),
+      risks_markdown: input.risksMarkdown === undefined ? existing.risks_markdown : input.risksMarkdown.trim(),
+      disconfirming_evidence_markdown: input.disconfirmingEvidenceMarkdown === undefined ? existing.disconfirming_evidence_markdown : input.disconfirmingEvidenceMarkdown.trim(),
+      next_actions_markdown: input.nextActionsMarkdown === undefined ? existing.next_actions_markdown : input.nextActionsMarkdown.trim(),
+      updated_at: now
+    })
+    .where(and(eq(researchMemo.user_id, input.userId), eq(researchMemo.ticker, ticker)))
+    .returning();
+
+  return toResearchMemo(updated);
+}
+
+export async function addResearchMemoEvidenceLink(input: {
+  userId: string;
+  memoId: number;
+  artifactId: number;
+  section: ResearchMemoSection;
+  annotation?: string | null;
+  sortOrder?: number | null;
+}) {
+  const memo = await getMemoByIdForUser(input.memoId, input.userId);
+  if (!memo) {
+    throw new Error('Research memo not found');
+  }
+
+  const artifact = await getArtifactByIdForUser(input.artifactId, input.userId);
+  if (!artifact) {
+    throw new Error('Research artifact not found');
+  }
+
+  if (artifact.ticker !== memo.ticker) {
+    throw new Error('Memo evidence must reference the same ticker');
+  }
+
+  const existing = await db
+    .select()
+    .from(researchMemoEvidence)
+    .where(and(
+      eq(researchMemoEvidence.memo_id, input.memoId),
+      eq(researchMemoEvidence.artifact_id, input.artifactId),
+      eq(researchMemoEvidence.section, input.section)
+    ))
+    .limit(1);
+
+  const desiredSortOrder = input.sortOrder === undefined || input.sortOrder === null
+    ? await db
+      .select({ maxOrder: sql<number>`coalesce(max(${researchMemoEvidence.sort_order}), 0)` })
+      .from(researchMemoEvidence)
+      .where(and(eq(researchMemoEvidence.memo_id, input.memoId), eq(researchMemoEvidence.section, input.section)))
+      .then((rows) => (rows[0]?.maxOrder ?? 0) + 1)
+    : Math.max(0, Math.trunc(input.sortOrder));
+
+  const now = new Date().toISOString();
+  if (existing.length > 0) {
+    await db
+      .update(researchMemoEvidence)
+      .set({
+        annotation: normalizeOptionalString(input.annotation),
+        sort_order: desiredSortOrder
+      })
+      .where(eq(researchMemoEvidence.id, existing[0].id));
+  } else {
+    await db
+      .insert(researchMemoEvidence)
+      .values({
+        memo_id: input.memoId,
+        artifact_id: input.artifactId,
+        section: input.section,
+        annotation: normalizeOptionalString(input.annotation),
+        sort_order: desiredSortOrder,
+        created_at: now
+      });
+  }
+
+  const memoEntity = toResearchMemo(memo);
+  const evidence = await listResearchMemoEvidenceLinks(input.userId, memoEntity.ticker);
+  return evidence.filter((item) => item.memo_id === input.memoId);
+}
+
+export async function deleteResearchMemoEvidenceLink(userId: string, memoId: number, linkId: number) {
+  const memo = await getMemoByIdForUser(memoId, userId);
+  if (!memo) {
+    return false;
+  }
+
+  const rows = await db
+    .delete(researchMemoEvidence)
+    .where(and(eq(researchMemoEvidence.id, linkId), eq(researchMemoEvidence.memo_id, memoId)))
+    .returning({ id: researchMemoEvidence.id });
+
+  return rows.length > 0;
+}
+
+export async function listResearchMemoEvidenceLinks(userId: string, ticker: string): Promise<ResearchMemoEvidenceLink[]> {
+  const memo = await getResearchMemoByTicker(userId, ticker);
+  if (!memo) {
+    return [];
+  }
+
+  const evidenceRows = await listMemoEvidenceRows(memo.id);
+  if (evidenceRows.length === 0) {
+    return [];
+  }
+
+  const artifactIds = evidenceRows.map((row) => row.artifact_id);
+  const artifactRows = await db
+    .select()
+    .from(researchArtifact)
+    .where(sql`${researchArtifact.id} in (${sql.join(artifactIds.map((id) => sql`${id}`), sql`, `)})`);
+
+  const artifactMap = new Map(artifactRows.map((row) => [row.id, row]));
+
+  return evidenceRows
+    .map((row) => {
+      const artifact = artifactMap.get(row.artifact_id);
+      if (!artifact) {
+        return null;
+      }
+
+      return {
+        id: row.id,
+        memo_id: row.memo_id,
+        artifact_id: row.artifact_id,
+        section: row.section,
+        annotation: row.annotation ?? null,
+        sort_order: row.sort_order,
+        created_at: row.created_at,
+        artifact: toResearchArtifact(artifact, true)
+      } satisfies ResearchMemoEvidenceLink;
+    })
+    .filter((row): row is ResearchMemoEvidenceLink => Boolean(row));
+}
+
+export async function getResearchPacket(userId: string, ticker: string): Promise<ResearchPacket> {
+  const normalizedTicker = normalizeTicker(ticker);
+  const memo = await getResearchMemoByTicker(userId, normalizedTicker);
+  const evidence = await listResearchMemoEvidenceLinks(userId, normalizedTicker);
+  const coverage = await getWatchlistItemByTicker(userId, normalizedTicker);
+  const latestFiling = (await listFilingsRecords({ ticker: normalizedTicker, limit: 1 }))[0] ?? null;
+  const evidenceBySection = new Map<ResearchMemoSection, ResearchMemoEvidenceLink[]>();
+
+  for (const item of evidence) {
+    const list = evidenceBySection.get(item.section) ?? [];
+    list.push(item);
+    evidenceBySection.set(item.section, list);
+  }
+
+  return {
+    ticker: normalizedTicker,
+    companyName: coverage?.company_name ?? latestFiling?.company_name ?? null,
+    generated_at: new Date().toISOString(),
+    memo,
+    sections: toPacketSections(memo, evidenceBySection)
+  };
+}
+
+export async function getResearchWorkspace(userId: string, ticker: string): Promise<ResearchWorkspace> {
+  const normalizedTicker = normalizeTicker(ticker);
+  const [coverage, memo, library, packet, latestFiling] = await Promise.all([
+    getWatchlistItemByTicker(userId, normalizedTicker),
+    getResearchMemoByTicker(userId, normalizedTicker),
+    listResearchArtifacts(userId, { ticker: normalizedTicker, limit: 40 }),
+    getResearchPacket(userId, normalizedTicker),
+    listFilingsRecords({ ticker: normalizedTicker, limit: 1 })
+  ]);
+
+  return {
+    ticker: normalizedTicker,
+    companyName: coverage?.company_name ?? latestFiling[0]?.company_name ?? null,
+    coverage,
+    latestFilingDate: latestFiling[0]?.filing_date ?? null,
+    memo,
+    library: library.artifacts,
+    packet,
+    availableTags: library.availableTags
+  };
+}
+
+export async function listResearchJournalEntriesCompat(userId: string, ticker: string, limit = 100) {
+  const { artifacts } = await listResearchArtifacts(userId, {
+    ticker,
+    limit: Math.min(Math.max(Math.trunc(limit), 1), 250)
+  });
+
+  return artifacts
+    .map(toResearchJournalEntry)
+    .filter((entry): entry is ResearchJournalEntry => Boolean(entry))
+    .slice(0, limit);
+}
+
+export async function createResearchJournalEntryCompat(input: {
+  userId: string;
+  ticker: string;
+  accessionNumber?: string | null;
+  entryType: ResearchJournalEntryType;
+  title?: string | null;
+  bodyMarkdown: string;
+  metadata?: Record<string, unknown> | null;
+}) {
+  const kind: ResearchArtifactKind = input.entryType === 'status_change' ? 'status_change' : 'note';
+  const created = await createResearchArtifactRecord({
+    userId: input.userId,
+    ticker: input.ticker,
+    accessionNumber: input.accessionNumber,
+    kind,
+    source: input.entryType === 'status_change' ? 'system' : 'user',
+    subtype: input.entryType,
+    title: input.title,
+    summary: input.bodyMarkdown,
+    bodyMarkdown: input.bodyMarkdown,
+    metadata: input.metadata
+  });
+
+  return toResearchJournalEntry(created);
+}
+
+export async function updateResearchJournalEntryCompat(input: {
+  userId: string;
+  id: number;
+  title?: string | null;
+  bodyMarkdown?: string;
+  metadata?: Record<string, unknown> | null;
+}) {
+  const updated = await updateResearchArtifactRecord({
+    userId: input.userId,
+    id: input.id,
+    title: input.title,
+    bodyMarkdown: input.bodyMarkdown,
+    metadata: input.metadata
+  });
+
+  return updated ? toResearchJournalEntry(updated) : null;
+}
+
+export async function deleteResearchJournalEntryCompat(userId: string, id: number) {
+  return await deleteResearchArtifactRecord(userId, id);
+}
+
+export async function createAiReportArtifactFromAccession(userId: string, accessionNumber: string) {
+  const filing = await getFilingByAccession(accessionNumber);
+  if (!filing) {
+    throw new Error('Filing not found');
+  }
+
+  const summary = filing.analysis?.text ?? filing.analysis?.legacyInsights ?? '';
+  if (!summary) {
+    throw new Error('AI summary not found');
+  }
+
+  return await upsertSystemResearchArtifact({
+    userId,
+    ticker: filing.ticker,
+    accessionNumber: filing.accession_number,
+    kind: 'ai_report',
+    subtype: 'filing_analysis',
+    title: `${filing.filing_type} AI memo`,
+    summary,
+    bodyMarkdown: [
+      `Stored AI memo for ${filing.company_name} (${filing.ticker}).`,
+      `Accession: ${filing.accession_number}`,
+      '',
+      summary
+    ].join('\n'),
+    metadata: {
+      provider: filing.analysis?.provider ?? 'unknown',
+      model: filing.analysis?.model ?? 'unknown',
+      filingType: filing.filing_type,
+      filingDate: filing.filing_date
+    }
+  });
+}
+
+export async function createFilingArtifactFromAccession(userId: string, accessionNumber: string) {
+  const filing = await getFilingByAccession(accessionNumber);
+  if (!filing) {
+    throw new Error('Filing not found');
+  }
+
+  return await upsertSystemResearchArtifact({
+    userId,
+    ticker: filing.ticker,
+    accessionNumber: filing.accession_number,
+    kind: 'filing',
+    subtype: 'filing_snapshot',
+    title: `${filing.filing_type} filing snapshot`,
+    summary: filing.analysis?.text ?? filing.analysis?.legacyInsights ?? `Captured filing ${filing.accession_number}.`,
+    bodyMarkdown: [
+      `Captured filing note for ${filing.company_name} (${filing.ticker}).`,
+      `Filed: ${filing.filing_date}`,
+      `Accession: ${filing.accession_number}`,
+      '',
+      filing.analysis?.text ?? filing.analysis?.legacyInsights ?? 'Review this filing for thesis updates.'
+    ].join('\n'),
+    metadata: {
+      filingType: filing.filing_type,
+      filingDate: filing.filing_date,
+      filingUrl: filing.filing_url,
+      submissionUrl: filing.submission_url ?? null,
+      primaryDocument: filing.primary_document ?? null
+    }
+  });
+}
+
+export async function storeResearchUpload(input: {
+  userId: string;
+  ticker: string;
+  file: File;
+  title?: string | null;
+  summary?: string | null;
+  tags?: string[];
+  metadata?: Record<string, unknown> | null;
+}) {
+  const ticker = normalizeTicker(input.ticker);
+  if (!ticker) {
+    throw new Error('ticker is required');
+  }
+
+  if (!input.file || input.file.size === 0) {
+    throw new Error('file is required');
+  }
+
+  const extension = extname(input.file.name || '').slice(0, 16);
+  const fileName = safeFileName(input.file.name || `upload${extension}`);
+  const relativePath = join(input.userId, ticker, `${Date.now()}-${randomUUID()}-${fileName}`);
+  const storagePath = join(getUploadsRoot(), relativePath);
+
+  await mkdir(dirname(storagePath), { recursive: true });
+  const bytes = Buffer.from(await input.file.arrayBuffer());
+  await writeFile(storagePath, bytes);
+
+  return await createResearchArtifactRecord({
+    userId: input.userId,
+    ticker,
+    kind: 'upload',
+    source: 'user',
+    subtype: normalizeOptionalString(input.file.type) ?? 'upload',
+    title: input.title ?? fileName,
+    summary: input.summary,
+    bodyMarkdown: null,
+    tags: input.tags,
+    metadata: {
+      ...(normalizeRecord(input.metadata) ?? {}),
+      originalFileName: input.file.name,
+      relativePath
+    },
+    fileName,
+    mimeType: input.file.type || 'application/octet-stream',
+    fileSizeBytes: input.file.size,
+    storagePath
+  });
+}
+
+export async function getResearchArtifactFileResponse(userId: string, id: number) {
+  const artifact = await getArtifactByIdForUser(id, userId);
+  if (!artifact || !artifact.storage_path || artifact.kind !== 'upload') {
+    return null;
+  }
+
+  const bytes = await readFile(artifact.storage_path).catch(() => null);
+  if (!bytes) {
+    return null;
+  }
+
+  return new Response(bytes, {
+    headers: {
+      'content-type': artifact.mime_type ?? 'application/octet-stream',
+      'content-disposition': `attachment; filename="${artifact.file_name ?? `research-upload-${artifact.id}`}"`,
+      'cache-control': 'no-store'
+    }
+  });
+}
+
+export function rebuildResearchArtifactIndex() {
+  rebuildArtifactSearchIndex();
+}
+
diff --git a/lib/types.ts b/lib/types.ts
index 3bea929..a1640f1 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -8,6 +8,19 @@ export type User = {
 export type CoverageStatus = 'backlog' | 'active' | 'watch' | 'archive';
 export type CoveragePriority = 'low' | 'medium' | 'high';
 export type ResearchJournalEntryType = 'note' | 'filing_note' | 'status_change';
+export type NumberScaleUnit = 'thousands' | 'millions' | 'billions';
+export type ResearchArtifactKind = 'filing' | 'ai_report' | 'note' | 'upload' | 'memo_snapshot' | 'status_change';
+export type ResearchArtifactSource = 'system' | 'user';
+export type ResearchVisibilityScope = 'private' | 'organization';
+export type ResearchMemoRating = 'strong_buy' | 'buy' | 'hold' | 'sell';
+export type ResearchMemoConviction = 'low' | 'medium' | 'high';
+export type ResearchMemoSection =
+  | 'thesis'
+  | 'variant_view'
+  | 'catalysts'
+  | 'risks'
+  | 'disconfirming_evidence'
+  | 'next_actions';
 
 export type WatchlistItem = {
   id: number;
@@ -188,6 +201,93 @@ export type ResearchJournalEntry = {
   updated_at: string;
 };
 
+export type ResearchArtifact = {
+  id: number;
+  user_id: string;
+  organization_id: string | null;
+  ticker: string;
+  accession_number: string | null;
+  kind: ResearchArtifactKind;
+  source: ResearchArtifactSource;
+  subtype: string | null;
+  title: string | null;
+  summary: string | null;
+  body_markdown: string | null;
+  search_text: string | null;
+  visibility_scope: ResearchVisibilityScope;
+  tags: string[];
+  metadata: Record<string, unknown> | null;
+  file_name: string | null;
+  mime_type: string | null;
+  file_size_bytes: number | null;
+  storage_path: string | null;
+  created_at: string;
+  updated_at: string;
+  linked_to_memo: boolean;
+};
+
+export type ResearchMemo = {
+  id: number;
+  user_id: string;
+  organization_id: string | null;
+  ticker: string;
+  rating: ResearchMemoRating | null;
+  conviction: ResearchMemoConviction | null;
+  time_horizon_months: number | null;
+  packet_title: string | null;
+  packet_subtitle: string | null;
+  thesis_markdown: string;
+  variant_view_markdown: string;
+  catalysts_markdown: string;
+  risks_markdown: string;
+  disconfirming_evidence_markdown: string;
+  next_actions_markdown: string;
+  created_at: string;
+  updated_at: string;
+};
+
+export type ResearchMemoEvidenceLink = {
+  id: number;
+  memo_id: number;
+  artifact_id: number;
+  section: ResearchMemoSection;
+  annotation: string | null;
+  sort_order: number;
+  created_at: string;
+  artifact: ResearchArtifact;
+};
+
+export type ResearchPacketSection = {
+  section: ResearchMemoSection;
+  title: string;
+  body_markdown: string;
+  evidence: ResearchMemoEvidenceLink[];
+};
+
+export type ResearchPacket = {
+  ticker: string;
+  companyName: string | null;
+  generated_at: string;
+  memo: ResearchMemo | null;
+  sections: ResearchPacketSection[];
+};
+
+export type ResearchLibraryResponse = {
+  artifacts: ResearchArtifact[];
+  availableTags: string[];
+};
+
+export type ResearchWorkspace = {
+  ticker: string;
+  companyName: string | null;
+  coverage: WatchlistItem | null;
+  latestFilingDate: string | null;
+  memo: ResearchMemo | null;
+  library: ResearchArtifact[];
+  packet: ResearchPacket;
+  availableTags: string[];
+};
+
 export type CompanyFinancialPoint = {
   filingDate: string;
   filingType: Filing['filing_type'];
diff --git a/package.json b/package.json
index 0813079..ed3a9ff 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "dev:next": "bun --bun next dev --turbopack",
     "build": "bun --bun next build --turbopack",
     "start": "bun --bun next start",
-    "lint": "bun --bun tsc --noEmit",
+    "lint": "bun x tsc --noEmit",
     "e2e:prepare": "bun run scripts/e2e-prepare.ts",
     "e2e:webserver": "bun run scripts/e2e-webserver.ts",
     "workflow:setup": "workflow-postgres-setup",
diff --git a/scripts/e2e-prepare.ts b/scripts/e2e-prepare.ts
index 2022680..ff571fc 100644
--- a/scripts/e2e-prepare.ts
+++ b/scripts/e2e-prepare.ts
@@ -9,7 +9,9 @@ const MIGRATION_FILES = [
   '0003_task_stage_event_timeline.sql',
   '0004_watchlist_company_taxonomy.sql',
   '0005_financial_taxonomy_v3.sql',
-  '0006_coverage_journal_tracking.sql'
+  '0006_coverage_journal_tracking.sql',
+  '0007_company_financial_bundles.sql',
+  '0008_research_workspace.sql'
 ] as const;
 
 export const E2E_DATABASE_PATH = join(process.cwd(), 'data', 'e2e.sqlite');