feat(phase-0): scaffold backend + web + docker + DB schema

- docker-compose.yml: timescaledb-ha (timescaledb 2.27 + vectorscale + pgvector + pgai)
  + backend (FastAPI, CUDA 12.1) + web (Next.js 14)
- docker-compose.gpu.yml: GPU profile overlay for RTX 3070 Ti
- build.bat: Windows bootstrap, auto-detects nvidia-smi and selects GPU/CPU compose
- backend: Dockerfile, pyproject.toml, FastAPI skeleton with /health and /health/db
- DB migration 001_init.sql: symbols (with trigram search), ohlcv_daily/1m (hypertables),
  macro_daily, trading_value_daily, news (vector embedding), predictions
  (with user_triggered flag for on-demand UX), prediction_outcomes, model_performance
- web: Next.js 14 + Tailwind + lightweight-charts placeholder
- README: KIS/DART/HuggingFace token issuance guides + 10 seed tickers + run instructions

web/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "stock-chart-site-web",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "dev": "next dev -p 3000 -H 0.0.0.0",
+    "build": "next build",
+    "start": "next start -p 3000 -H 0.0.0.0",
+    "lint": "next lint"
+  },
+  "dependencies": {
+    "next": "14.2.3",
+    "react": "18.3.1",
+    "react-dom": "18.3.1",
+    "lightweight-charts": "4.1.7"
+  },
+  "devDependencies": {
+    "@types/node": "20.12.12",
+    "@types/react": "18.3.3",
+    "@types/react-dom": "18.3.0",
+    "typescript": "5.4.5",
+    "tailwindcss": "3.4.4",
+    "postcss": "8.4.38",
+    "autoprefixer": "10.4.19"
+  }
+}