feat: 管理后台完整可用 + 注册登录记日志 + 提取信息结构化展示 + 微信配置就绪

- 管理后台用户/统计/日志/配置四页签全部对接真实后端API
- auth注册/登录/游客/微信登录事件写入usage_logs表
- 提取信息结果从原始JSON改为卡片式字段列表（中文标签）
- 管理后台搜索按钮增加加载态和结果数提示
- 配置WECHAT_APP_ID/WECHAT_APP_SECRET
- 客户/产品/报价单CRUD页面完整（导出导入批量操作）

backend/app/api/v1/auth.py

@@ -1,4 +1,4 @@
-from fastapi import APIRouter, Depends, HTTPException, status, Header
+from fastapi import APIRouter, Depends, HTTPException, status, Header, Request
 from fastapi.security import OAuth2PasswordRequestForm
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select
@@ -9,6 +9,7 @@ from app.models.user import User
 from app.core.security import hash_password, verify_password, create_access_token, create_refresh_token, decode_token
 from pydantic import BaseModel, EmailStr
 from datetime import datetime, timedelta
+from app.services.admin import AdminService
 
 router = APIRouter()
 
@@ -37,7 +38,7 @@ class RefreshRequest(BaseModel):
 
 
 @router.post("/register")
-async def register(data: RegisterRequest, db: AsyncSession = Depends(get_db)):
+async def register(data: RegisterRequest, request: Request, db: AsyncSession = Depends(get_db)):
     existing = await db.execute(select(User).where(User.phone == data.phone))
     if existing.scalar_one_or_none():
         raise HTTPException(status_code=400, detail="Phone already registered")
@@ -51,6 +52,9 @@ async def register(data: RegisterRequest, db: AsyncSession = Depends(get_db)):
     db.add(user)
     await db.flush()
 
+    client_ip = request.client.host if request.client else None
+    await AdminService(db).log_usage(str(user.id), "user.register", {"phone": data.phone}, ip=client_ip)
+
     return {
         "id": str(user.id),
         "phone": user.phone,
@@ -63,12 +67,17 @@ async def register(data: RegisterRequest, db: AsyncSession = Depends(get_db)):
 @router.post("/login", response_model=LoginResponse)
 async def login(
     data: LoginRequest,
+    request: Request,
     db: AsyncSession = Depends(get_db),
 ):
-    phone = data.username or data.phone
-    if not phone:
+    login_id = data.username or data.phone
+    if not login_id:
         raise HTTPException(status_code=422, detail="phone required")
-    result = await db.execute(select(User).where(User.phone == phone))
+    result = await db.execute(
+        select(User).where(
+            (User.phone == login_id) | (User.username == login_id)
+        )
+    )
     user = result.scalar_one_or_none()
 
     if not user or not verify_password(data.password, user.password_hash):
@@ -77,6 +86,9 @@ async def login(
             detail="Invalid credentials",
         )
 
+    client_ip = request.client.host if request.client else None
+    await AdminService(db).log_usage(str(user.id), "user.login", {"login_id": login_id}, ip=client_ip)
+
     return LoginResponse(
         access_token=create_access_token({"sub": str(user.id), "tier": user.tier, "role": user.role}),
         refresh_token=create_refresh_token({"sub": str(user.id)}),
@@ -90,7 +102,7 @@ async def login(
 
 
 @router.post("/login/guest")
-async def guest_login():
+async def guest_login(request: Request, db: AsyncSession = Depends(get_db)):
     guest_id = str(uuid.uuid4())
     access_token = create_access_token(
         {"sub": guest_id, "tier": "guest", "role": "guest", "is_guest": True},
@@ -98,6 +110,9 @@ async def guest_login():
     )
     refresh_token = create_refresh_token({"sub": guest_id, "is_guest": True})
     
+    client_ip = request.client.host if request.client else None
+    await AdminService(db).log_usage(guest_id, "user.login_guest", {}, ip=client_ip)
+
     return LoginResponse(
         access_token=access_token,
         refresh_token=refresh_token,
@@ -197,7 +212,7 @@ async def wechat_config():
 
 
 @router.post("/wechat-login")
-async def wechat_login(data: WeChatLoginRequest, db: AsyncSession = Depends(get_db)):
+async def wechat_login(data: WeChatLoginRequest, request: Request, db: AsyncSession = Depends(get_db)):
     from app.services.wechat import wechat_service
 
     session = await wechat_service.code2session(data.code)
@@ -207,6 +222,7 @@ async def wechat_login(data: WeChatLoginRequest, db: AsyncSession = Depends(get_
     openid = session.get("openid")
     result = await db.execute(select(User).where(User.wechat_openid == openid))
     user = result.scalar_one_or_none()
+    is_new = False
 
     if not user:
         user = User(
@@ -216,6 +232,10 @@ async def wechat_login(data: WeChatLoginRequest, db: AsyncSession = Depends(get_
         )
         db.add(user)
         await db.flush()
+        is_new = True
+
+    client_ip = request.client.host if request.client else None
+    await AdminService(db).log_usage(str(user.id), "user.wechat_login", {"is_new": is_new}, ip=client_ip)
 
     return LoginResponse(
         access_token=create_access_token({"sub": str(user.id), "tier": user.tier, "role": user.role}),