feat: AI routing DB-driven, payment gateway full integration, WeChat mini-program CI/CD

- AI routing rules now stored in system_configs DB table instead of hardcoded config
- Multi-model support via name|model composite key for same-provider routing
- UnifiedPayService with HMAC-SHA256 gateway integration (alipay/wechat)
- Admin payment panel: list, stats, search, filter, refund
- WeChat mini-program CI/CD via miniprogram-ci (v1.0.9)
- Translation quota extended to LLM provider tier
- SearchService with DB-driven provider config (bing/google_cse/searxng)
- Footer cleanup across admin/workspace/uni-app
- Private key excluded from git tracking

backend/app/api/v1/discovery.py

@@ -1,6 +1,8 @@
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, Depends, HTTPException
 from typing import Optional, Dict, Any
 from pydantic import BaseModel
+from sqlalchemy.ext.asyncio import AsyncSession
+from app.database import get_db
 from app.services.discovery import DiscoveryService
 
 router = APIRouter()
@@ -22,10 +24,10 @@ class OutreachRequest(BaseModel):
 
 
 @router.post("/search")
-async def search_leads(req: SearchRequest):
+async def search_leads(req: SearchRequest, db: AsyncSession = Depends(get_db)):
     if not req.product_description.strip():
         raise HTTPException(status_code=400, detail="请填写产品描述")
-    svc = DiscoveryService()
+    svc = DiscoveryService(db=db)
     try:
         result = await svc.search(req.product_description, req.target_market)
         return {"success": True, "data": result}