feat: 后端 CRUD 完成（episodes + yearly_targets + users 管理 API）

backend/app/api/users.py

@@ -0,0 +1,106 @@
+"""
+用户管理 API — 管理员 CRUD（仅 zhipianren 可操作）
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlmodel import Session, select
+
+from app.core.deps import get_current_user, require_role
+from app.core.security import hash_password, verify_password
+from app.db.session import get_session
+from app.models.user import User, UserRole
+from app.schemas.user_admin import UserCreate, UserResponse, UserUpdate
+
+router = APIRouter(prefix="/api/users", tags=["用户管理"])
+
+
+@router.get("", response_model=list[UserResponse])
+def list_users(
+    session: Session = Depends(get_session),
+    current_user: User = Depends(require_role(UserRole.zhipianren)),
+):
+    """获取所有用户列表（仅管理员）。"""
+    statement = select(User).order_by(User.id)
+    users = session.exec(statement).all()
+    return users
+
+
+@router.get("/{user_id}", response_model=UserResponse)
+def get_user(
+    user_id: int,
+    session: Session = Depends(get_session),
+    current_user: User = Depends(require_role(UserRole.zhipianren)),
+):
+    """根据 ID 获取单个用户（仅管理员）。"""
+    user = session.get(User, user_id)
+    if user is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="用户不存在")
+    return user
+
+
+@router.post("", response_model=UserResponse, status_code=status.HTTP_201_CREATED)
+def create_user(
+    body: UserCreate,
+    session: Session = Depends(get_session),
+    current_user: User = Depends(require_role(UserRole.zhipianren)),
+):
+    """创建新用户（仅管理员）。"""
+    # 检查用户名唯一
+    existing = session.exec(select(User).where(User.username == body.username)).first()
+    if existing:
+        raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail="用户名已存在")
+
+    user = User(
+        username=body.username,
+        display_name=body.display_name,
+        password_hash=hash_password(body.password),
+        role=body.role,
+        profile_text=body.profile_text,
+    )
+    session.add(user)
+    session.commit()
+    session.refresh(user)
+    return user
+
+
+@router.patch("/{user_id}", response_model=UserResponse)
+def update_user(
+    user_id: int,
+    body: UserUpdate,
+    session: Session = Depends(get_session),
+    current_user: User = Depends(require_role(UserRole.zhipianren)),
+):
+    """更新用户信息（仅管理员）。可更新 display_name/role/profile_text/is_active。"""
+    user = session.get(User, user_id)
+    if user is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="用户不存在")
+
+    update_data = body.model_dump(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(user, field, value)
+
+    session.add(user)
+    session.commit()
+    session.refresh(user)
+    return user
+
+
+@router.delete("/{user_id}", status_code=status.HTTP_204_NO_CONTENT)
+def deactivate_user(
+    user_id: int,
+    session: Session = Depends(get_session),
+    current_user: User = Depends(require_role(UserRole.zhipianren)),
+):
+    """停用用户（软删除，仅管理员）。"""
+    user = session.get(User, user_id)
+    if user is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="用户不存在")
+
+    # 不能停用自己的账号
+    if user.id == current_user.id:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="不能停用自己的账号")
+
+    user.is_active = False
+    session.add(user)
+    session.commit()
+    return None