feat(ui): split client into Live and Strategy pages and wire new routes

Rebuilds the client into Live (watchlist with charts, fundamentals, news,
quant analysis) and Strategy (backtest runner / precomputed results) pages,
adds the corresponding /api/stocks/:symbol/chart|fundamentals|related|quant
and /api/strategies endpoints, and updates project tooling.

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

web/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "dev": "concurrently \"npm:dev:server\" \"npm:dev:client\"",
     "dev:server": "tsx watch src/server/index.ts",
-    "dev:client": "vite --host 127.0.0.1",
+    "dev:client": "vite",
     "test": "vitest run",
     "build": "tsc --noEmit && vite build"
   },
@@ -15,6 +15,7 @@
     "cors": "^2.8.5",
     "dotenv": "^17.4.2",
     "express": "^5.1.0",
+    "lightweight-charts": "^5.2.0",
     "lucide-react": "^1.14.0",
     "react": "^19.1.1",
     "react-dom": "^19.1.1",