feat(web-dashboard): complete settings, health, shared data and build integration

- Settings editor with API key masking and conflict detection
- Health dashboard with status cards and one-click fixes
- Home dashboard with stats and quick actions
- Shared data viewer for commands/skills/agents
- Build scripts for UI + server bundle
- Bundle size verification (<500KB gzipped)
- Pre-release checklist script

tsconfig.json

@@ -52,6 +52,7 @@
     "dist",
     "tests",
     "lib",
-    "scripts"
+    "scripts",
+    "ui"
   ]
 }