注册码 + 管理员系统：

User 模型新增 is_admin 字段
新增 InviteCode 模型（邀请码表）
注册接口必须提供有效邀请码，使用后自动标记
管理员接口：查看所有用户、启用/禁用用户、生成/删除邀请码
前端新增管理面板页面 /admin，导航栏对管理员显示入口
注册页面新增邀请码输入框
选择性超话签到：

新增 GET /api/v1/accounts/{id}/topics 接口获取超话列表
POST /signin 接口支持 {"topic_indices": [0,1,3]} 选择性签到
新增超话选择页面 /accounts/{id}/topics，支持全选/手动勾选
账号详情页新增"选择超话签到"按钮

backend/api_service/app/routers/accounts.py

@@ -8,7 +8,7 @@ from datetime import datetime
 from typing import Dict, List
 
 import httpx
-from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi import APIRouter, Depends, HTTPException, status, Body
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import selectinload
@@ -249,6 +249,25 @@ async def verify_account(
     )
 
 
+@router.get("/{account_id}/topics")
+async def list_topics(
+    account_id: str,
+    user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """获取账号关注的超话列表，供用户勾选签到。"""
+    account = await _get_owned_account(account_id, user, db)
+    key = _encryption_key()
+
+    try:
+        cookie_str = decrypt_cookie(account.encrypted_cookies, account.iv, key)
+    except Exception:
+        return error_response("Cookie 解密失败", "COOKIE_ERROR", status_code=400)
+
+    topics = await _get_super_topics(cookie_str, account.weibo_user_id)
+    return success_response({"topics": topics, "total": len(topics)})
+
+
 # ---- MANUAL SIGNIN ----
 
 async def _get_super_topics(cookie_str: str, weibo_uid: str = "") -> List[dict]:
@@ -384,10 +403,12 @@ async def manual_signin(
     account_id: str,
     user: User = Depends(get_current_user),
     db: AsyncSession = Depends(get_db),
+    body: dict = Body(default=None),
 ):
     """
-    Manually trigger sign-in for all followed super topics.
-    Verifies cookie first, fetches topic list, signs each one, writes logs.
+    Manually trigger sign-in for selected (or all) super topics.
+    Body (optional): {"topic_indices": [0, 1, 3]} — indices of topics to sign.
+    If omitted or empty, signs all topics.
     """
     account = await _get_owned_account(account_id, user, db)
     key = _encryption_key()
@@ -421,6 +442,18 @@ async def manual_signin(
             "No super topics found for this account",
         )
 
+    # Filter topics if specific indices provided
+    selected_indices = None
+    if body and isinstance(body, dict):
+        selected_indices = body.get("topic_indices")
+    if selected_indices and isinstance(selected_indices, list):
+        topics = [topics[i] for i in selected_indices if 0 <= i < len(topics)]
+        if not topics:
+            return success_response(
+                {"signed": 0, "already_signed": 0, "failed": 0, "topics": []},
+                "No valid topics selected",
+            )
+
     # Sign each topic
     results = []
     signed = already = failed = 0