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

build.bat

@@ -0,0 +1,81 @@
+@echo off
+REM stock_chart_site - Windows 빌드/기동 스크립트
+REM 더블클릭하면 .env 준비 -> GPU 감지 -> docker compose up
+
+setlocal enabledelayedexpansion
+cd /d "%~dp0"
+
+echo === stock_chart_site bootstrap ===
+
+REM 1) .env 준비
+if not exist .env (
+    echo .env not found. Copying .env.example -> .env
+    copy /Y .env.example .env >nul
+    echo  - 키 발급 안내는 README.md 참조. 비워둬도 pykrx 만으로 일단 동작합니다.
+)
+
+REM 2) Docker 설치 / 실행 확인
+where docker >nul 2>&1
+if errorlevel 1 (
+    echo [ERROR] docker 명령을 찾을 수 없습니다. Docker Desktop 설치/실행을 확인하세요.
+    pause
+    exit /b 1
+)
+docker info >nul 2>&1
+if errorlevel 1 (
+    echo [ERROR] Docker Desktop이 실행 중이 아닙니다.
+    pause
+    exit /b 1
+)
+
+REM 3) GPU 감지
+set USE_GPU=0
+where nvidia-smi >nul 2>&1
+if not errorlevel 1 (
+    nvidia-smi >nul 2>&1
+    if not errorlevel 1 set USE_GPU=1
+)
+
+if "%USE_GPU%"=="1" (
+    echo [GPU] NVIDIA GPU detected. Using GPU profile.
+    set COMPOSE_FILES=-f docker-compose.yml -f docker-compose.gpu.yml
+) else (
+    echo [CPU] NVIDIA GPU not detected. Falling back to CPU mode.
+    echo       Docker Desktop ^> Settings ^> Resources ^> WSL Integration ^> GPU support 를 켜면 GPU 사용 가능합니다.
+    set COMPOSE_FILES=-f docker-compose.yml
+)
+
+REM 4) Build + up
+echo.
+echo === docker compose build ===
+docker compose %COMPOSE_FILES% build
+if errorlevel 1 (
+    echo [ERROR] build 실패.
+    pause
+    exit /b 1
+)
+
+echo.
+echo === docker compose up -d ===
+docker compose %COMPOSE_FILES% up -d
+if errorlevel 1 (
+    echo [ERROR] up 실패.
+    pause
+    exit /b 1
+)
+
+echo.
+echo === 상태 ===
+docker compose %COMPOSE_FILES% ps
+
+echo.
+echo 접속:
+echo   Web      http://localhost:3000
+echo   Backend  http://localhost:8000/health
+echo   DB ext   http://localhost:8000/health/db
+echo.
+echo 로그 보기:  docker compose logs -f backend
+echo 정지:       docker compose down
+echo.
+pause
+endlocal