feat: full-stack frontend with gateway API integration

- Dashboard with real-time service health, screening results, stream stats
- Stock list page with search, market filter, pagination via KIS API
- Stock detail page with prices, valuation, AI analysis, catalysts
- Screening page with trigger + results display
- Pipeline monitoring with service status and stream info
- Typed API client (lib/api.ts) for all gateway endpoints
- Reusable components (Sidebar, StatCard)
- Dockerfile with build-time NEXT_PUBLIC_API_URL injection
- Docker-compatible .dockerignore

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

package.json

@@ -9,9 +9,12 @@
     "lint": "eslint"
   },
   "dependencies": {
+    "ioredis": "^5.9.3",
+    "lucide-react": "^0.575.0",
     "next": "16.1.6",
     "react": "19.2.3",
-    "react-dom": "19.2.3"
+    "react-dom": "19.2.3",
+    "recharts": "^3.7.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",