Initial AlphaPulse implementation: news crawler and Binance klines

- Backend (FastAPI, SQLAlchemy 2, Alembic): single-admin cookie auth,
  news/crawler/market APIs with SSE and WebSocket streaming
- Crawler (Scrapy + Scrapy-Redis): wscn_news, wscn_live, cls_depth,
  cls_telegraph spiders, idempotent upserts with revisions, raw response
  archiving, per-source subprocess supervision, restart and backoff
- Market worker: full-history Binance spot/USD-M kline backfill,
  realtime WS stream, hourly and on-reconnect catch-up
- Frontend (Vue 3, Element Plus, UnoCSS, KLineChart): news feed,
  crawler console with live logs, Binance-style chart page
- Deploy: docker compose, nginx site, migrate and daily backup scripts

backend/src/alphapulse/api/main.py

@@ -0,0 +1,29 @@
+from fastapi import Depends, FastAPI
+from fastapi.openapi.docs import get_swagger_ui_html
+from fastapi.responses import HTMLResponse
+
+from alphapulse.api import auth, crawler, market, news
+from alphapulse.core.auth import require_admin
+
+# 关闭默认文档路由，改为登录后才能访问
+app = FastAPI(title="AlphaPulse", docs_url=None, redoc_url=None, openapi_url=None)
+app.include_router(auth.router)
+app.include_router(news.router)
+app.include_router(crawler.router)
+app.include_router(market.router)
+app.include_router(market.ws_router)
+
+
+@app.get("/api/health", include_in_schema=False)
+async def health() -> dict[str, str]:
+    return {"status": "ok"}
+
+
+@app.get("/api/openapi.json", include_in_schema=False, dependencies=[Depends(require_admin)])
+async def openapi() -> dict:
+    return app.openapi()
+
+
+@app.get("/api/docs", include_in_schema=False, dependencies=[Depends(require_admin)])
+async def docs() -> HTMLResponse:
+    return get_swagger_ui_html(openapi_url="/api/openapi.json", title="AlphaPulse API")