flatten app to repo root and update docker deployment for single-stack runtime

app/api/portfolio/holdings/[id]/route.ts

@@ -0,0 +1,89 @@
+import { jsonError } from '@/lib/server/http';
+import { recalculateHolding } from '@/lib/server/portfolio';
+import { withStore } from '@/lib/server/store';
+
+type Context = {
+  params: Promise<{ id: string }>;
+};
+
+function nowIso() {
+  return new Date().toISOString();
+}
+
+function asPositiveNumber(value: unknown) {
+  const parsed = typeof value === 'number' ? value : Number(value);
+  return Number.isFinite(parsed) && parsed > 0 ? parsed : null;
+}
+
+export async function PATCH(request: Request, context: Context) {
+  const { id } = await context.params;
+  const numericId = Number(id);
+
+  if (!Number.isInteger(numericId) || numericId <= 0) {
+    return jsonError('Invalid holding id');
+  }
+
+  const payload = await request.json() as {
+    shares?: number;
+    avgCost?: number;
+    currentPrice?: number;
+  };
+
+  let found = false;
+  let updated: unknown = null;
+
+  await withStore((store) => {
+    const index = store.holdings.findIndex((entry) => entry.id === numericId);
+    if (index < 0) {
+      return;
+    }
+
+    found = true;
+    const existing = store.holdings[index];
+
+    const shares = asPositiveNumber(payload.shares) ?? Number(existing.shares);
+    const avgCost = asPositiveNumber(payload.avgCost) ?? Number(existing.avg_cost);
+    const currentPrice = asPositiveNumber(payload.currentPrice) ?? Number(existing.current_price ?? existing.avg_cost);
+
+    const next = recalculateHolding({
+      ...existing,
+      shares: shares.toFixed(6),
+      avg_cost: avgCost.toFixed(6),
+      current_price: currentPrice.toFixed(6),
+      updated_at: nowIso(),
+      last_price_at: nowIso()
+    });
+
+    store.holdings[index] = next;
+    updated = next;
+  });
+
+  if (!found) {
+    return jsonError('Holding not found', 404);
+  }
+
+  return Response.json({ holding: updated });
+}
+
+export async function DELETE(_request: Request, context: Context) {
+  const { id } = await context.params;
+  const numericId = Number(id);
+
+  if (!Number.isInteger(numericId) || numericId <= 0) {
+    return jsonError('Invalid holding id');
+  }
+
+  let removed = false;
+
+  await withStore((store) => {
+    const next = store.holdings.filter((holding) => holding.id !== numericId);
+    removed = next.length !== store.holdings.length;
+    store.holdings = next;
+  });
+
+  if (!removed) {
+    return jsonError('Holding not found', 404);
+  }
+
+  return Response.json({ success: true });
+}