Add user profile customization with name, role, email, and phone

- Add UserProfileSchema to ClientSettings with name, role, email, phone fields
- Update database layer to persist profile data in client_settings table
- Rewrite ProfileOverlay component as editable form with save/cancel actions
- Update Topbar to display user's initials from profile name
- Profile data loaded on app mount and saved via settings.update RPC

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

packages/shared/src/db/queries.ts

@@ -25,7 +25,7 @@ import type {
   ClientSettings,
   ServerSettings,
 } from "@mosaiciq/contracts/rpc";
-import { ClientSettingsSchema, ServerSettingsSchema } from "@mosaiciq/contracts/rpcSchemas";
+import { ClientSettingsSchema, ServerSettingsSchema, UserProfileSchema } from "@mosaiciq/contracts/rpcSchemas";
 
 export function parseJsonWithSchema<T>(
   value: string,
@@ -982,6 +982,7 @@ const DEFAULT_CLIENT_SETTINGS: ClientSettings = {
     "navigation.agents": "Cmd+4",
     "navigation.home": "Cmd+0",
   },
+  profile: {},
 };
 
 export function getClientSettings(db: Db): ClientSettings {
@@ -999,6 +1000,9 @@ export function getClientSettings(db: Db): ClientSettings {
       } else if (row.key === "navCollapsed") {
         const navCollapsed = z.record(z.boolean()).safeParse(parsed);
         if (navCollapsed.success) settings.navCollapsed = { ...settings.navCollapsed, ...navCollapsed.data };
+      } else if (row.key === "profile") {
+        const profile = UserProfileSchema.partial().safeParse(parsed);
+        if (profile.success) settings.profile = { ...settings.profile, ...profile.data };
       } else {
         const candidate = { ...settings, [row.key]: parsed };
         const validated = ClientSettingsSchema.safeParse(candidate);
@@ -1041,6 +1045,9 @@ export function updateClientSettings(db: Db, settings: Partial<ClientSettings>):
   if (settings.keybindings !== undefined) {
     updateClientSetting(db, "keybindings", settings.keybindings);
   }
+  if (settings.profile !== undefined) {
+    updateClientSetting(db, "profile", settings.profile);
+  }
 }
 
 export function getServerSettings(db: Db): ServerSettings {