Session 2026-05-28: profile page overhaul, nav fixes, dashboard activity links

- Fix nav links not working from profile page (useEffect infinite re-render via unstable profile object ref)
- Fix nav hover/active: gold icon highlight, no background change; active links non-clickable
- Fix hover layout shift: add border: 1px solid transparent to all interactive elements
- Header icon buttons (search, theme toggle) now highlight gold on hover
- Profile page: replace calendar with activity feed (60/40 grid), add stat cards (tasks completed, active projects, revision requests, submissions)
- Profile card: title field, icon rows for location/email/linkedin, member since + role bottom-right, edit button top-right
- Profile portrait: remove wrapper column, fix left-gap alignment
- Add profiles.title migration
- Dashboard recent activity: name → /profile/{id}, task → /requests/{id} (clickable links)
- Icon-only sidebar with gold active/hover state, pointer-events: none on active links
- layout.md updated with profile page geometry rules

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -18,7 +18,8 @@
     "jszip": "^3.10.1",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
-    "react-router-dom": "^7.13.1"
+    "react-router-dom": "^7.13.1",
+    "recharts": "^2.15.4"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.4",