diff --git a/app/admin/repositories/ad_audit.py b/app/admin/repositories/ad_audit.py
index 064b036..e08ae68 100644
--- a/app/admin/repositories/ad_audit.py
+++ b/app/admin/repositories/ad_audit.py
@@ -50,7 +50,7 @@ def _reward_video_rows(
             AdRewardRecord.reward_date == date,
             AdRewardRecord.reward_scene == "reward_video",
         )
-        .order_by(AdRewardRecord.user_id, AdRewardRecord.created_at)
+        .order_by(AdRewardRecord.user_id, AdRewardRecord.created_at, AdRewardRecord.id)
     )
     if user_id is not None:
         stmt = stmt.where(AdRewardRecord.user_id == user_id)
@@ -127,7 +127,7 @@ def _feed_rows(db: Session, *, date: str, user_id: int | None) -> list[dict]:
     stmt = (
         select(AdFeedRewardRecord)
         .where(AdFeedRewardRecord.reward_date == date)
-        .order_by(AdFeedRewardRecord.user_id, AdFeedRewardRecord.created_at)
+        .order_by(AdFeedRewardRecord.user_id, AdFeedRewardRecord.created_at, AdFeedRewardRecord.id)
     )
     if user_id is not None:
         stmt = stmt.where(AdFeedRewardRecord.user_id == user_id)
@@ -205,7 +205,7 @@ def ad_coin_audit(
         rows.extend(_reward_video_rows(db, date=date, user_id=user_id))
     if scene in (None, "feed"):
         rows.extend(_feed_rows(db, date=date, user_id=user_id))
-    rows.sort(key=lambda r: r["created_at"], reverse=True)
+    rows.sort(key=lambda r: (r["created_at"], r["record_id"]), reverse=True)
 
     total = len(rows)
     mismatch_count = sum(1 for r in rows if not r["matched"])
diff --git a/app/admin/repositories/audit_log.py b/app/admin/repositories/audit_log.py
index 8b41bf4..7eec119 100644
--- a/app/admin/repositories/audit_log.py
+++ b/app/admin/repositories/audit_log.py
@@ -4,7 +4,7 @@
 """
 from __future__ import annotations
 
-from sqlalchemy import select
+from sqlalchemy import func, select
 from sqlalchemy.orm import Session
 
 from app.models.admin import AdminAuditLog
@@ -49,8 +49,9 @@ def list_audit_logs(
     admin_id: int | None = None,
     limit: int = 50,
     cursor: int | None = None,
-) -> tuple[list[AdminAuditLog], int | None]:
-    """游标分页(id 倒序),与现有 list_* 约定一致。返回 (rows, next_cursor)。"""
+) -> tuple[list[AdminAuditLog], int | None, int]:
+    """offset 分页(id 倒序)+ total。cursor 即 offset((page-1)*pageSize),支持页码跳页。
+    返回 (rows, next_cursor, total)。"""
     stmt = select(AdminAuditLog)
     if action:
         stmt = stmt.where(AdminAuditLog.action == action)
@@ -58,13 +59,15 @@ def list_audit_logs(
         stmt = stmt.where(AdminAuditLog.target_type == target_type)
     if admin_id is not None:
         stmt = stmt.where(AdminAuditLog.admin_id == admin_id)
-    if cursor is not None:
-        stmt = stmt.where(AdminAuditLog.id < cursor)
-    stmt = stmt.order_by(AdminAuditLog.id.desc())
-    rows = list(db.execute(stmt.limit(limit + 1)).scalars().all())
+
+    total = int(db.execute(select(func.count()).select_from(stmt.subquery())).scalar_one())
+    offset = max(cursor or 0, 0)
+    rows = list(
+        db.execute(
+            stmt.order_by(AdminAuditLog.id.desc()).offset(offset).limit(limit + 1)
+        ).scalars().all()
+    )
     has_more = len(rows) > limit
     items = rows[:limit]
-    # next_cursor 必须是"本页返回的最后一条"的 id(下一页查 id < 它),不能用 rows[limit]——
-    # rows[limit] 是探测下一页用的第 limit+1 条,它既不在本页也不在下页 → 每页边界丢一条。
-    next_cursor = items[-1].id if has_more else None
-    return items, next_cursor
+    next_cursor = offset + limit if has_more else None
+    return items, next_cursor, total
diff --git a/app/admin/repositories/queries.py b/app/admin/repositories/queries.py
index d7293f0..a4721e0 100644
--- a/app/admin/repositories/queries.py
+++ b/app/admin/repositories/queries.py
@@ -38,6 +38,28 @@ def cursor_paginate(
     return items, next_cursor
 
 
+def offset_paginate(
+    db: Session, stmt: Select, sort_clause: tuple, *, limit: int, cursor: int | None
+) -> tuple[list, int | None, int]:
+    """offset 分页 + 总数。stmt 只含 where/join,不要预先带 order_by/offset/limit。
+
+    cursor 即 offset(页码分页:offset=(page-1)*pageSize)。返回 (items, next_cursor, total):
+    - total:符合筛选条件的总条数(供 antd pagination 渲染页码/共 N 条),count 在 P0 量级开销可忽略;
+    - next_cursor:下一页 offset(兼容「加载更多」),末页为 None。
+    多取 1 条探测下一页。sort_clause 为 order_by 表达式元组(末位应含 id 保证稳定排序)。"""
+    total = int(
+        db.execute(select(func.count()).select_from(stmt.subquery())).scalar_one()
+    )
+    offset = max(cursor or 0, 0)
+    rows = list(
+        db.execute(stmt.order_by(*sort_clause).offset(offset).limit(limit + 1)).scalars().all()
+    )
+    has_more = len(rows) > limit
+    items = rows[:limit]
+    next_cursor = offset + limit if has_more else None
+    return items, next_cursor, total
+
+
 def list_users(
     db: Session,
     *,
@@ -53,11 +75,11 @@ def list_users(
     sort_order: str = "desc",
     limit: int = 20,
     cursor: int | None = None,
-) -> tuple[list[User], int | None]:
+) -> tuple[list[User], int | None, int]:
     """用户列表(admin 全量)。支持手机号前缀 / 渠道 / 状态 / 昵称模糊 / 注册·最近登录时间范围筛选,
     按 id·注册时间·最近登录排序。**offset 分页**(cursor=offset):任意列排序下游标语义统一,
     代价是翻页期间数据变动可能错位一条——admin 低频场景可接受(同 [list_all_withdraw_orders])。
-    日期入参统一转 UTC naive 比较(User 时间均为 UTC naive,见 _as_utc_naive)。"""
+    日期入参统一转 tz-aware UTC 比较(列为 timestamptz,见 _as_utc)。"""
     stmt = select(User)
     if phone:
         stmt = stmt.where(User.phone.like(f"{phone}%"))  # 前缀匹配
@@ -68,13 +90,13 @@ def list_users(
     if nickname and nickname.strip():
         stmt = stmt.where(User.nickname.ilike(f"%{nickname.strip()}%"))
     if created_from is not None:
-        stmt = stmt.where(User.created_at >= _as_utc_naive(created_from))
+        stmt = stmt.where(User.created_at >= _as_utc(created_from))
     if created_to is not None:
-        stmt = stmt.where(User.created_at <= _as_utc_naive(created_to))
+        stmt = stmt.where(User.created_at <= _as_utc(created_to))
     if last_login_from is not None:
-        stmt = stmt.where(User.last_login_at >= _as_utc_naive(last_login_from))
+        stmt = stmt.where(User.last_login_at >= _as_utc(last_login_from))
     if last_login_to is not None:
-        stmt = stmt.where(User.last_login_at <= _as_utc_naive(last_login_to))
+        stmt = stmt.where(User.last_login_at <= _as_utc(last_login_to))
 
     sort_cols = {
         "id": User.id,
@@ -84,14 +106,7 @@ def list_users(
     sort_col = sort_cols.get(sort_by, User.id)
     order_fn = asc if sort_order == "asc" else desc
     id_order = asc(User.id) if sort_order == "asc" else desc(User.id)
-    stmt = stmt.order_by(order_fn(sort_col), id_order)
-
-    offset = max(cursor or 0, 0)
-    rows = list(db.execute(stmt.offset(offset).limit(limit + 1)).scalars().all())
-    has_more = len(rows) > limit
-    items = rows[:limit]
-    next_cursor = offset + limit if has_more else None
-    return items, next_cursor
+    return offset_paginate(db, stmt, (order_fn(sort_col), id_order), limit=limit, cursor=cursor)
 
 
 def list_onboarding_devices(db: Session, *, limit: int = 500) -> list[dict]:
@@ -160,7 +175,7 @@ def list_all_withdraw_orders(
     quick_filter: str | None = None,
     limit: int = 20,
     cursor: int | None = None,
-) -> tuple[list[WithdrawOrder], int | None]:
+) -> tuple[list[WithdrawOrder], int | None, int]:
     stmt = select(WithdrawOrder)
     needs_user_join = bool(keyword and keyword.strip()) or quick_filter == "high_risk"
     if needs_user_join:
@@ -190,16 +205,16 @@ def list_all_withdraw_orders(
 
     date_col = WithdrawOrder.updated_at if date_field == "updated_at" else WithdrawOrder.created_at
     if date_from is not None:
-        stmt = stmt.where(date_col >= _as_utc_naive(date_from))
+        stmt = stmt.where(date_col >= _as_utc(date_from))
     if date_to is not None:
-        stmt = stmt.where(date_col <= _as_utc_naive(date_to))
+        stmt = stmt.where(date_col <= _as_utc(date_to))
 
-    now = datetime.now(timezone.utc).replace(tzinfo=None)
+    # tz-aware:列为 timestamptz,比较绝对时刻、与 DB 会话时区无关(同 _as_utc / stats.py)
+    now = datetime.now(timezone.utc)
     today_start = (
         datetime.now(ZoneInfo("Asia/Shanghai"))
         .replace(hour=0, minute=0, second=0, microsecond=0)
         .astimezone(timezone.utc)
-        .replace(tzinfo=None)
     )
     if quick_filter == "abnormal":
         stmt = stmt.where(
@@ -244,6 +259,53 @@ def list_all_withdraw_orders(
     sort_col = sort_cols.get(sort_by, WithdrawOrder.created_at)
     order_fn = asc if sort_order == "asc" else desc
     id_order = asc(WithdrawOrder.id) if sort_order == "asc" else desc(WithdrawOrder.id)
+    return offset_paginate(db, stmt, (order_fn(sort_col), id_order), limit=limit, cursor=cursor)
+
+
+def _as_utc(value: datetime) -> datetime:
+    """前端传 ISO 时间 → 统一成 tz-aware UTC 再比较。
+
+    所有时间列均为 `DateTime(timezone=True)`(Postgres timestamptz);用 tz-aware 绑定参数
+    比较的是绝对时刻,与 DB 会话时区无关、恒正确。曾用 naive UTC,正确性依赖会话 TimeZone=UTC,
+    生产会话非 UTC 时筛选边界会整体偏移——故统一 tz-aware(与 stats.py / withdraw_summary 一致)。
+    无时区入参按 UTC 解释。"""
+    if value.tzinfo is None:
+        return value.replace(tzinfo=timezone.utc)
+    return value.astimezone(timezone.utc)
+
+
+def list_feedbacks(
+    db: Session,
+    *,
+    status: str | None = None,
+    user_id: int | None = None,
+    content: str | None = None,
+    created_from: datetime | None = None,
+    created_to: datetime | None = None,
+    sort_by: str = "id",
+    sort_order: str = "desc",
+    limit: int = 20,
+    cursor: int | None = None,
+) -> tuple[list[Feedback], int | None]:
+    """反馈工单列表。支持 状态 / 用户ID / 内容模糊 / 提交时间范围 筛选,按 id·提交时间排序。
+    **offset 分页**(cursor=offset):任意列排序下游标语义统一(同 [list_users]),代价是翻页期间
+    数据变动可能错位一条——admin 低频场景可接受。created_at 为 timestamptz,日期入参统一转 tz-aware UTC 比较。"""
+    stmt = select(Feedback)
+    if status:
+        stmt = stmt.where(Feedback.status == status)
+    if user_id is not None:
+        stmt = stmt.where(Feedback.user_id == user_id)
+    if content and content.strip():
+        stmt = stmt.where(Feedback.content.ilike(f"%{content.strip()}%"))
+    if created_from is not None:
+        stmt = stmt.where(Feedback.created_at >= _as_utc(created_from))
+    if created_to is not None:
+        stmt = stmt.where(Feedback.created_at <= _as_utc(created_to))
+
+    sort_cols = {"id": Feedback.id, "created_at": Feedback.created_at}
+    sort_col = sort_cols.get(sort_by, Feedback.id)
+    order_fn = asc if sort_order == "asc" else desc
+    id_order = asc(Feedback.id) if sort_order == "asc" else desc(Feedback.id)
     stmt = stmt.order_by(order_fn(sort_col), id_order)
 
     offset = max(cursor or 0, 0)
@@ -254,29 +316,6 @@ def list_all_withdraw_orders(
     return items, next_cursor
 
 
-def _as_utc_naive(value: datetime) -> datetime:
-    """前端传 ISO 时间;DB 当前按 UTC naive 比较最稳(SQLite/本地开发一致)。"""
-    if value.tzinfo is None:
-        return value
-    return value.astimezone(timezone.utc).replace(tzinfo=None)
-
-
-def list_feedbacks(
-    db: Session,
-    *,
-    status: str | None = None,
-    user_id: int | None = None,
-    limit: int = 20,
-    cursor: int | None = None,
-) -> tuple[list[Feedback], int | None]:
-    stmt = select(Feedback)
-    if status:
-        stmt = stmt.where(Feedback.status == status)
-    if user_id is not None:
-        stmt = stmt.where(Feedback.user_id == user_id)
-    return cursor_paginate(db, stmt, Feedback.id, limit=limit, cursor=cursor)
-
-
 def get_withdraw_by_out_bill_no(db: Session, out_bill_no: str) -> WithdrawOrder | None:
     """按商户单号查提现单(admin 重试打款先拿 user_id 用,M3)。"""
     return db.execute(
@@ -463,14 +502,14 @@ def list_price_reports(
     user_id: int | None = None,
     limit: int = 20,
     cursor: int | None = None,
-) -> tuple[list[PriceReport], int | None]:
-    """上报更低价列表(admin 全量,可按状态/用户筛)。游标同 feedback:id 倒序。"""
+) -> tuple[list[PriceReport], int | None, int]:
+    """上报更低价列表(admin 全量,可按状态/用户筛)。offset 分页 + total,id 倒序。"""
     stmt = select(PriceReport)
     if status:
         stmt = stmt.where(PriceReport.status == status)
     if user_id is not None:
         stmt = stmt.where(PriceReport.user_id == user_id)
-    return cursor_paginate(db, stmt, PriceReport.id, limit=limit, cursor=cursor)
+    return offset_paginate(db, stmt, (PriceReport.id.desc(),), limit=limit, cursor=cursor)
 
 
 def price_report_summary(db: Session) -> dict:
diff --git a/app/admin/routers/admins.py b/app/admin/routers/admins.py
index c3b8483..9f7ac15 100644
--- a/app/admin/routers/admins.py
+++ b/app/admin/routers/admins.py
@@ -17,6 +17,12 @@ router = APIRouter(
 )
 
 
+def _active_super_count(db: AdminDb) -> int:
+    return sum(
+        1 for a in admin_repo.list_admins(db) if a.role == "super_admin" and a.status == "active"
+    )
+
+
 @router.get("", response_model=list[AdminOut], summary="管理员列表")
 def list_admins(db: AdminDb) -> list[AdminOut]:
     return [AdminOut.model_validate(a) for a in admin_repo.list_admins(db)]
@@ -48,16 +54,29 @@ def update_admin(
     if admin_id == admin.id and body.status == "disabled":
         raise HTTPException(status_code=400, detail="不能禁用自己")
 
+    # 防自锁:降级 / 禁用某个 super_admin 前,确认操作后仍至少剩 1 个 active super_admin,
+    # 否则会进入「零可用超管」死局——本路由仅 super 可进,只能改库恢复。
+    demotes_super = (
+        target.role == "super_admin"
+        and target.status == "active"
+        and (
+            (body.role is not None and body.role != "super_admin")
+            or body.status == "disabled"
+        )
+    )
+    if demotes_super and _active_super_count(db) <= 1:
+        raise HTTPException(status_code=400, detail="不能降级/禁用最后一个超级管理员")
+
     changes: dict = {}
-    if body.role is not None:
+    if body.role is not None and body.role != target.role:
+        changes["role"] = {"before": target.role, "after": body.role}
         target.role = body.role
-        changes["role"] = body.role
-    if body.status is not None:
+    if body.status is not None and body.status != target.status:
+        changes["status"] = {"before": target.status, "after": body.status}
         target.status = body.status
-        changes["status"] = body.status
     if body.password is not None:
-        target.password_hash = hash_password(body.password)
         changes["password"] = "reset"
+        target.password_hash = hash_password(body.password)
     if not changes:
         raise HTTPException(status_code=400, detail="无任何变更字段")
     db.commit()
diff --git a/app/admin/routers/audit.py b/app/admin/routers/audit.py
index 580e03c..dd7cace 100644
--- a/app/admin/routers/audit.py
+++ b/app/admin/routers/audit.py
@@ -26,9 +26,11 @@ def list_audit_logs(
     limit: Annotated[int, Query(ge=1, le=100)] = 50,
     cursor: Annotated[int | None, Query()] = None,
 ) -> CursorPage[AdminAuditLogOut]:
-    items, next_cursor = audit_repo.list_audit_logs(
+    items, next_cursor, total = audit_repo.list_audit_logs(
         db, action=action, target_type=target_type, admin_id=admin_id, limit=limit, cursor=cursor,
     )
     return CursorPage(
-        items=[AdminAuditLogOut.model_validate(x) for x in items], next_cursor=next_cursor,
+        items=[AdminAuditLogOut.model_validate(x) for x in items],
+        next_cursor=next_cursor,
+        total=total,
     )
diff --git a/app/admin/routers/feedback.py b/app/admin/routers/feedback.py
index 23f21de..51a2a29 100644
--- a/app/admin/routers/feedback.py
+++ b/app/admin/routers/feedback.py
@@ -1,6 +1,7 @@
-"""admin 反馈工单:列表(读)+ 标记已处理(写,带审计)。"""
+"""admin 反馈工单:列表(读,支持 状态/用户ID/内容/时间 筛选 + 排序)+ 标记已处理(写,带审计)。"""
 from __future__ import annotations
 
+from datetime import datetime
 from typing import Annotated
 
 from fastapi import APIRouter, Depends, HTTPException, Query, Request
@@ -25,11 +26,25 @@ def list_feedbacks(
     db: AdminDb,
     status: Annotated[str | None, Query()] = None,
     user_id: Annotated[int | None, Query()] = None,
+    content: Annotated[str | None, Query(max_length=100)] = None,
+    created_from: Annotated[datetime | None, Query()] = None,
+    created_to: Annotated[datetime | None, Query()] = None,
+    sort_by: Annotated[str, Query(pattern="^(id|created_at)$")] = "id",
+    sort_order: Annotated[str, Query(pattern="^(asc|desc)$")] = "desc",
     limit: Annotated[int, Query(ge=1, le=100)] = 20,
     cursor: Annotated[int | None, Query()] = None,
 ) -> CursorPage[FeedbackOut]:
     items, next_cursor = queries.list_feedbacks(
-        db, status=status, user_id=user_id, limit=limit, cursor=cursor,
+        db,
+        status=status,
+        user_id=user_id,
+        content=content,
+        created_from=created_from,
+        created_to=created_to,
+        sort_by=sort_by,
+        sort_order=sort_order,
+        limit=limit,
+        cursor=cursor,
     )
     return CursorPage(
         items=[FeedbackOut.model_validate(f) for f in items], next_cursor=next_cursor,
diff --git a/app/admin/routers/price_report.py b/app/admin/routers/price_report.py
index b29f271..8e04b6d 100644
--- a/app/admin/routers/price_report.py
+++ b/app/admin/routers/price_report.py
@@ -40,11 +40,13 @@ def list_price_reports(
     limit: Annotated[int, Query(ge=1, le=100)] = 20,
     cursor: Annotated[int | None, Query()] = None,
 ) -> CursorPage[PriceReportOut]:
-    items, next_cursor = queries.list_price_reports(
+    items, next_cursor, total = queries.list_price_reports(
         db, status=status, user_id=user_id, limit=limit, cursor=cursor,
     )
     return CursorPage(
-        items=[PriceReportOut.model_validate(r) for r in items], next_cursor=next_cursor,
+        items=[PriceReportOut.model_validate(r) for r in items],
+        next_cursor=next_cursor,
+        total=total,
     )
 
 
@@ -60,7 +62,9 @@ def approve_price_report(
     admin: Annotated[AdminUser, Depends(require_role("operator"))],
     db: AdminDb,
 ) -> OkResponse:
-    rep = db.get(PriceReport, report_id)
+    # 行锁(SELECT FOR UPDATE):并发/连点双请求会都读到 pending → 各发一次金币双倍发奖,
+    # 锁住该行串行化,第二个请求拿锁后看到 approved → 走 400。SQLite 下 FOR UPDATE 为 no-op。
+    rep = db.get(PriceReport, report_id, with_for_update=True)
     if rep is None:
         raise HTTPException(status_code=404, detail="上报记录不存在")
     if rep.status != "pending":
@@ -88,7 +92,7 @@ def reject_price_report(
     admin: Annotated[AdminUser, Depends(require_role("operator"))],
     db: AdminDb,
 ) -> OkResponse:
-    rep = db.get(PriceReport, report_id)
+    rep = db.get(PriceReport, report_id, with_for_update=True)  # 行锁,同 approve(防并发重复审核)
     if rep is None:
         raise HTTPException(status_code=404, detail="上报记录不存在")
     if rep.status != "pending":
diff --git a/app/admin/routers/users.py b/app/admin/routers/users.py
index e992e20..c631b5d 100644
--- a/app/admin/routers/users.py
+++ b/app/admin/routers/users.py
@@ -45,7 +45,7 @@ def list_users(
     limit: Annotated[int, Query(ge=1, le=100)] = 20,
     cursor: Annotated[int | None, Query()] = None,
 ) -> CursorPage[AdminUserListItem]:
-    items, next_cursor = queries.list_users(
+    items, next_cursor, total = queries.list_users(
         db, phone=phone, register_channel=register_channel, status=status,
         nickname=nickname, created_from=created_from, created_to=created_to,
         last_login_from=last_login_from, last_login_to=last_login_to,
@@ -54,6 +54,7 @@ def list_users(
     return CursorPage(
         items=[AdminUserListItem.model_validate(u) for u in items],
         next_cursor=next_cursor,
+        total=total,
     )
 
 
@@ -126,7 +127,8 @@ def grant_user_coins(
     if body.mode == "set":
         if body.amount < 0:
             raise HTTPException(status_code=400, detail="目标金币值不能为负")
-        before = wallet_repo.get_or_create_account(db, user_id, commit=False).coin_balance
+        # lock=True:锁账户行,防连点/并发各读同一 before 算同一 delta 双写,余额错位
+        before = wallet_repo.get_or_create_account(db, user_id, commit=False, lock=True).coin_balance
         delta = body.amount - before
         if delta == 0:
             raise HTTPException(status_code=400, detail=f"当前金币已为 {body.amount},无需调整")
@@ -134,9 +136,9 @@ def grant_user_coins(
         if body.amount == 0:
             raise HTTPException(status_code=400, detail="amount 不能为 0")
         delta = body.amount
-        # 负数扣减时不允许扣成负余额(运营误操作保护)
+        # 负数扣减时不允许扣成负余额(运营误操作保护);lock=True 防并发扣穿
         if delta < 0:
-            acc_now = wallet_repo.get_or_create_account(db, user_id, commit=False)
+            acc_now = wallet_repo.get_or_create_account(db, user_id, commit=False, lock=True)
             if acc_now.coin_balance + delta < 0:
                 raise HTTPException(
                     status_code=400, detail=f"扣减后金币为负(当前余额 {acc_now.coin_balance})"
@@ -174,7 +176,10 @@ def grant_user_cash(
     if body.mode == "set":
         if body.amount_cents < 0:
             raise HTTPException(status_code=400, detail="目标现金值不能为负")
-        before = wallet_repo.get_or_create_account(db, user_id, commit=False).cash_balance_cents
+        # lock=True:锁账户行,防连点/并发各读同一 before 算同一 delta 双写,余额错位
+        before = wallet_repo.get_or_create_account(
+            db, user_id, commit=False, lock=True
+        ).cash_balance_cents
         delta = body.amount_cents - before
         if delta == 0:
             raise HTTPException(
@@ -184,9 +189,9 @@ def grant_user_cash(
         if body.amount_cents == 0:
             raise HTTPException(status_code=400, detail="amount_cents 不能为 0")
         delta = body.amount_cents
-        # 负数扣减时不允许扣成负余额(运营误操作保护)
+        # 负数扣减时不允许扣成负余额(运营误操作保护);lock=True 防并发扣穿
         if delta < 0:
-            acc_now = wallet_repo.get_or_create_account(db, user_id, commit=False)
+            acc_now = wallet_repo.get_or_create_account(db, user_id, commit=False, lock=True)
             if acc_now.cash_balance_cents + delta < 0:
                 raise HTTPException(
                     status_code=400, detail=f"扣减后现金为负(当前余额 {acc_now.cash_balance_cents} 分)"
diff --git a/app/admin/routers/withdraw.py b/app/admin/routers/withdraw.py
index 7fcfff6..732159f 100644
--- a/app/admin/routers/withdraw.py
+++ b/app/admin/routers/withdraw.py
@@ -63,7 +63,7 @@ def list_withdraws(
     limit: Annotated[int, Query(ge=1, le=100)] = 20,
     cursor: Annotated[int | None, Query()] = None,
 ) -> CursorPage[WithdrawOrderOut]:
-    items, next_cursor = queries.list_all_withdraw_orders(
+    items, next_cursor, total = queries.list_all_withdraw_orders(
         db,
         user_id=user_id,
         status=status,
@@ -78,7 +78,9 @@ def list_withdraws(
         cursor=cursor,
     )
     return CursorPage(
-        items=[WithdrawOrderOut.model_validate(o) for o in items], next_cursor=next_cursor,
+        items=[WithdrawOrderOut.model_validate(o) for o in items],
+        next_cursor=next_cursor,
+        total=total,
     )
 
 
@@ -87,7 +89,12 @@ def withdraws_summary(db: AdminDb) -> WithdrawSummaryOut:
     return WithdrawSummaryOut(**queries.withdraw_summary(db))
 
 
-@router.get("/health-check", response_model=WxpayHealthCheckOut, summary="提现配置健康检查")
+@router.get(
+    "/health-check",
+    response_model=WxpayHealthCheckOut,
+    summary="提现配置健康检查",
+    dependencies=[Depends(require_role("finance"))],  # 暴露密钥路径/配置,限财务+super
+)
 def withdraw_health_check() -> WxpayHealthCheckOut:
     private_path = wxpay._resolve_config_path(settings.WXPAY_MCH_PRIVATE_KEY_PATH)  # noqa: SLF001
     public_path = wxpay._resolve_config_path(settings.WXPAY_PUBLIC_KEY_PATH)  # noqa: SLF001
@@ -160,7 +167,7 @@ def withdraw_detail(out_bill_no: str, db: AdminDb) -> WithdrawDetailOut:
             withdraw_success_cents=overview["withdraw_success_cents"],
         )
 
-    recent_withdraws, _ = queries.list_all_withdraw_orders(
+    recent_withdraws, _, _ = queries.list_all_withdraw_orders(
         db, user_id=order.user_id, limit=5, cursor=None,
     )
     recent_cash_transactions, _ = queries.list_all_cash_transactions(
diff --git a/app/admin/schemas/common.py b/app/admin/schemas/common.py
index 6987eeb..9f283c6 100644
--- a/app/admin/schemas/common.py
+++ b/app/admin/schemas/common.py
@@ -9,10 +9,15 @@ T = TypeVar("T")
 
 
 class CursorPage(BaseModel, Generic[T]):
-    """游标分页响应:items + 下一页游标(next_cursor=None 表示末页)。"""
+    """分页响应:items + 下一页游标(next_cursor=None 表示末页)+ 可选 total。
+
+    next_cursor:offset 分页时即下一页 offset,「加载更多」用;末页为 None。
+    total:符合筛选条件的总条数,页码分页(antd pagination)用;不需要总数的接口可不传(None)。
+    """
 
     items: list[T]
     next_cursor: int | None = None
+    total: int | None = None
 
 
 class OkResponse(BaseModel):
diff --git a/app/admin/schemas/price_report.py b/app/admin/schemas/price_report.py
index 30ea8ad..ddf3278 100644
--- a/app/admin/schemas/price_report.py
+++ b/app/admin/schemas/price_report.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 
 from datetime import datetime
 
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import BaseModel, ConfigDict, Field, field_validator
 
 
 class PriceReportOut(BaseModel):
@@ -36,6 +36,14 @@ class PriceReportOut(BaseModel):
 class PriceReportRejectRequest(BaseModel):
     reason: str = Field(min_length=1, max_length=256, description="拒绝理由,用户端记录页会看到")
 
+    @field_validator("reason")
+    @classmethod
+    def _reason_not_blank(cls, v: str) -> str:
+        # min_length=1 放过纯空白(" "),trim 后再校验非空,避免审计/用户端记录到空理由
+        if not v.strip():
+            raise ValueError("拒绝理由不能为空")
+        return v.strip()
+
 
 class PriceReportSummary(BaseModel):
     """审核台顶部各状态计数。"""
diff --git a/app/admin/schemas/user.py b/app/admin/schemas/user.py
index f781fe5..6f1c352 100644
--- a/app/admin/schemas/user.py
+++ b/app/admin/schemas/user.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 from datetime import datetime
 from typing import Literal
 
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import BaseModel, ConfigDict, Field, field_validator
 
 
 class AdminUserListItem(BaseModel):
@@ -37,6 +37,13 @@ class AdminUserOverview(BaseModel):
     feedback_total: int
 
 
+def _strip_reason(v: str) -> str:
+    # min_length=1 放过纯空白(" "),trim 后再校验非空,避免审计记到空原因
+    if not v.strip():
+        raise ValueError("操作原因不能为空")
+    return v.strip()
+
+
 class GrantCoinsRequest(BaseModel):
     mode: Literal["delta", "set"] = Field(
         "delta", description="delta=增减(amount 为变动量) / set=设为(amount 为目标值,须≥0)"
@@ -47,6 +54,8 @@ class GrantCoinsRequest(BaseModel):
     )
     reason: str = Field(..., min_length=1, max_length=128, description="操作原因(必填,入审计)")
 
+    _v_reason = field_validator("reason")(_strip_reason)
+
 
 class GrantCashRequest(BaseModel):
     mode: Literal["delta", "set"] = Field(
@@ -58,6 +67,8 @@ class GrantCashRequest(BaseModel):
     )
     reason: str = Field(..., min_length=1, max_length=128, description="操作原因(必填,入审计)")
 
+    _v_reason = field_validator("reason")(_strip_reason)
+
 
 class SetUserStatusRequest(BaseModel):
     status: Literal["active", "disabled"] = Field(
diff --git a/app/api/v1/feedback.py b/app/api/v1/feedback.py
index cc30d86..c085780 100644
--- a/app/api/v1/feedback.py
+++ b/app/api/v1/feedback.py
@@ -1,7 +1,7 @@
 """帮助与反馈 endpoint。
 
 路由前缀 `/api/v1/feedback`,需 Bearer 鉴权(反馈绑到登录用户,便于回访)。
-  POST /  提交反馈(multipart:content / contact 必填,images 可选 ≤4 张)
+  POST /  提交反馈(multipart:content 必填;contact 可选(原型改版后客户端已不再采集);images 可选 ≤6 张)
 
 截图复用 [app.core.media] 落盘到 /media/feedback/。
 """
@@ -20,7 +20,7 @@ logger = logging.getLogger("shagua.feedback")
 
 router = APIRouter(prefix="/api/v1/feedback", tags=["feedback"])
 
-_MAX_IMAGES = 4
+_MAX_IMAGES = 6
 _CONTENT_MAX = 2000
 _CONTACT_MAX = 128
 
@@ -30,7 +30,8 @@ async def submit_feedback(
     user: CurrentUser,
     db: DbSession,
     content: str = Form(...),
-    contact: str = Form(...),
+    # 原型改版后客户端不再采集联系方式;保留字段以兼容旧端 + 后续可能复用,默认空串。
+    contact: str = Form(default=""),
     images: list[UploadFile] = File(default=[]),
 ) -> FeedbackOut:
     content = content.strip()
@@ -39,8 +40,6 @@ async def submit_feedback(
         raise HTTPException(status_code=400, detail="反馈内容不能为空")
     if len(content) > _CONTENT_MAX:
         raise HTTPException(status_code=400, detail="反馈内容过长")
-    if not contact:
-        raise HTTPException(status_code=400, detail="联系方式不能为空")
     if len(contact) > _CONTACT_MAX:
         raise HTTPException(status_code=400, detail="联系方式过长")
 
diff --git a/app/core/config.py b/app/core/config.py
index a64c3a8..a06ebd0 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -9,11 +9,16 @@ from functools import lru_cache
 from pathlib import Path
 from typing import Literal
 
-from pydantic import Field
+from pydantic import Field, model_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 _PROJECT_ROOT = Path(__file__).resolve().parent.parent.parent
 
+# 生产环境 JWT secret 的最小可接受长度(字节)。HS256 推荐高熵随机串;<16 视为弱密钥。
+_MIN_PROD_SECRET_LEN = 16
+# 已知的占位默认值(代码里写死的 default),prod 下绝不能沿用。
+_INSECURE_SECRET_DEFAULTS = frozenset({"change-me", "change-me-admin", ""})
+
 
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(
@@ -198,6 +203,29 @@ class Settings(BaseSettings):
     def is_prod(self) -> bool:
         return self.APP_ENV == "prod"
 
+    @model_validator(mode="after")
+    def _enforce_prod_secrets(self) -> "Settings":
+        """prod 下强校验 JWT secret,弱/默认/空即启动报错(fail-fast,挡住 token 被伪造)。
+
+        只校验两个签发凭证:App 用户的 JWT_SECRET_KEY、后台的 ADMIN_JWT_SECRET——它们沿用默认值
+        时任何人都能伪造 access/admin token → 账号与后台失陷。INTERNAL_API_SECRET 默认空 = 内部端点
+        关闭(返 503),是安全的默认态,故不在此强制。dev 不触发,便于本地直接起。
+        """
+        if not self.is_prod:
+            return self
+        weak: list[str] = []
+        for name in ("JWT_SECRET_KEY", "ADMIN_JWT_SECRET"):
+            value = getattr(self, name)
+            if value in _INSECURE_SECRET_DEFAULTS or len(value) < _MIN_PROD_SECRET_LEN:
+                weak.append(name)
+        if weak:
+            raise ValueError(
+                f"APP_ENV=prod 但检测到弱/默认密钥: {', '.join(weak)} —— 必须改成 "
+                f"≥{_MIN_PROD_SECRET_LEN} 位高熵随机串(否则 JWT 可被伪造 → 用户/后台账号失陷)。"
+                f"生成示例: python -c \"import secrets; print(secrets.token_urlsafe(48))\""
+            )
+        return self
+
 
 @lru_cache(maxsize=1)
 def get_settings() -> Settings:
diff --git a/app/core/rewards.py b/app/core/rewards.py
index 3870af0..e9eac9a 100644
--- a/app/core/rewards.py
+++ b/app/core/rewards.py
@@ -143,6 +143,13 @@ AD_LT_FACTOR_TABLE: tuple[tuple[float, int, int | None], ...] = (
     (1.0, 11, None),
 )
 
+# 客户端可影响的 eCPM 可信上限(分/千次展示):信息流广告一期由客户端上报 eCPM,伪造天价 eCPM
+# 可铸出天量金币(见 calculate_ad_reward_coin)。真实 eCPM 一般 <¥100 CPM(=10000 分),档位表顶档
+# 为 >¥400(=40000 分);取 ¥500 CPM=50000 分,留足真实头部余量又封死伪造值。钳在唯一计算口
+# calculate_ad_reward_coin,故 feed 与 reward_video(回退客户端上报 eCPM 时)一并护住;阈值设在所有
+# 真实值之上,不会少发正规奖励。
+AD_ECPM_MAX_FEN: int = 50_000
+
 
 def parse_ecpm_fen(ecpm: str | int | float | None) -> float:
     """解析 eCPM 原始值(穿山甲 getEcpm 原值,单位=分/千次展示)。非法/缺失→0。"""
@@ -187,8 +194,12 @@ def calculate_ad_reward_coin(ecpm: str | int | float | None, count_after_this: i
     eCPM 是穿山甲 getEcpm 原值,单位【分/千次展示】;先 ÷100 转成元(因子判档 + 收益换算都用元)。
     单次收益(元)= eCPM元 ÷ 1000(每千次→单次) × 因子1(eCPM 元档) × 因子2(LT);
     再按 1 元=10000 金币取整。count_after_this 为账号累计第 N 次看视频(LT 因子用,不按天重置)。
+
+    eCPM 在此先钳到 AD_ECPM_MAX_FEN(¥500 CPM):信息流广告一期 eCPM 由客户端上报,伪造天价值
+    会铸天量金币;钳在这唯一入口,feed 与 reward_video 回退客户端 eCPM 的路径都护住,且阈值高于
+    所有真实值,不影响正规发奖。
     """
-    ecpm_yuan = parse_ecpm_yuan(ecpm)
+    ecpm_yuan = min(parse_ecpm_yuan(ecpm), AD_ECPM_MAX_FEN / 100.0)
     yuan = (ecpm_yuan / 1000.0) * ad_ecpm_factor(ecpm_yuan) * ad_lt_factor(count_after_this)
     return max(0, round(yuan * COIN_PER_YUAN))
 
diff --git a/app/models/feedback.py b/app/models/feedback.py
index 004d9e2..caef033 100644
--- a/app/models/feedback.py
+++ b/app/models/feedback.py
@@ -1,7 +1,8 @@
 """用户反馈表(帮助与反馈)。
 
-每条 = 用户一次提交。content 必填,contact 必填(微信/QQ/手机,便于回访),images 为可选的
-截图 URL 列表(/media/feedback/...,JSON 存)。status: new(待处理)/ handled(已处理)。
+每条 = 用户一次提交。content 必填;contact 原为必填(微信/QQ/手机),原型改版后客户端不再采集,
+新数据存空串(列保持 NOT NULL,免迁移;历史数据仍有值);images 为可选的截图 URL 列表
+(/media/feedback/...,JSON 存)。status: new(待处理)/ handled(已处理)。
 """
 from __future__ import annotations
 
diff --git a/app/repositories/ad_feed_reward.py b/app/repositories/ad_feed_reward.py
index 894c928..c2e367c 100644
--- a/app/repositories/ad_feed_reward.py
+++ b/app/repositories/ad_feed_reward.py
@@ -16,6 +16,10 @@ from app.repositories import wallet as crud_wallet
 
 
 FEED_REWARD_UNIT_SECONDS = 10
+# 单个 feed 事件的时长上限(秒):一期 duration_seconds 由客户端上报,伪造超长时长会刷份数
+# (每 10 秒 1 份)。真实单条信息流视频远小于此;取 120s=12 份封顶,挡刷量、不影响正规单。
+# 与 rewards.AD_ECPM_MAX_FEN(eCPM 钳顶)合起来,把单事件可铸金币锁进有限区间。
+FEED_MAX_DURATION_SECONDS = 120
 
 
 def _find_by_event(db: Session, client_event_id: str) -> AdFeedRewardRecord | None:
@@ -66,13 +70,19 @@ def grant_feed_reward(
     adn: str | None = None,
     slot_id: str | None = None,
 ) -> AdFeedRewardRecord:
-    """完成一条信息流广告后结算奖励。client_event_id 幂等,同号重试不重复发。"""
+    """完成一条信息流广告后结算奖励。client_event_id 幂等,同号重试不重复发。
+
+    一期 eCPM/时长均由客户端上报,故服务端两道硬闸防刷:时长钳到 FEED_MAX_DURATION_SECONDS
+    限单事件份数,eCPM 在 rewards.calculate_ad_reward_coin 内钳到 AD_ECPM_MAX_FEN 限单份金额;
+    叠加每日 get_ad_daily_limit 条数上限,把单用户日产出锁进有限区间。
+    """
     existing = _find_by_event(db, client_event_id)
     if existing is not None:
         return existing
 
     today = cn_today().isoformat()
-    safe_duration = max(0, min(duration_seconds, 24 * 60 * 60))
+    # 客户端上报时长先钳到 FEED_MAX_DURATION_SECONDS,防伪造超长时长刷份数(见常量注释)。
+    safe_duration = max(0, min(duration_seconds, FEED_MAX_DURATION_SECONDS))
     unit_count = safe_duration // FEED_REWARD_UNIT_SECONDS
 
     if _granted_today(db, user_id, today) >= rewards.get_ad_daily_limit(db):
diff --git a/app/repositories/wallet.py b/app/repositories/wallet.py
index 3438928..615f0eb 100644
--- a/app/repositories/wallet.py
+++ b/app/repositories/wallet.py
@@ -78,9 +78,15 @@ class WithdrawNotReviewable(Exception):
     """提现单当前状态不可审核(非 reviewing,可能已被处理过)。"""
 
 
-def get_or_create_account(db: Session, user_id: int, *, commit: bool = True) -> CoinAccount:
-    """取用户金币账户,不存在则建一个空账户。"""
-    acc = db.get(CoinAccount, user_id)
+def get_or_create_account(
+    db: Session, user_id: int, *, commit: bool = True, lock: bool = False
+) -> CoinAccount:
+    """取用户金币账户,不存在则建一个空账户。
+
+    lock=True 时对已存在的账户行加 SELECT FOR UPDATE(读-算-写余额的调用方串行化,防并发
+    双写余额错位,如 admin set 模式连点);默认 False 不改 C 端发奖行为。SQLite 下为 no-op。
+    """
+    acc = db.get(CoinAccount, user_id, with_for_update=True) if lock else db.get(CoinAccount, user_id)
     if acc is None:
         acc = CoinAccount(
             user_id=user_id,
diff --git a/docs/api/admin-feedbacks-list.md b/docs/api/admin-feedbacks-list.md
index 2a3d002..af0460f 100644
--- a/docs/api/admin-feedbacks-list.md
+++ b/docs/api/admin-feedbacks-list.md
@@ -1,4 +1,4 @@
-# GET /admin/api/feedbacks — 反馈工单列表(游标分页)
+# GET /admin/api/feedbacks — 反馈工单列表(offset 分页 + 筛选/排序)
 
 > 所属:Admin·反馈 组（前缀 `/admin/api/feedbacks`） | 鉴权:Bearer admin_token（角色:任意已登录管理员,无 `require_role`,仅 `get_current_admin`） | [← 返回 API 索引](./README.md)
 
@@ -7,8 +7,13 @@
 |---|---|---|---|---|
 | `status` | string | ❌ | null | 反馈状态,精确匹配:`new`(待处理) / `handled`(已处理);传空/不传则不筛 |
 | `user_id` | int | ❌ | null | 按提交用户 id 精确筛 |
+| `content` | string | ❌ | null | 反馈内容模糊匹配(ilike,≤100 字) |
+| `created_from` | datetime | ❌ | null | 提交时间 ≥(ISO,统一按 UTC 比较) |
+| `created_to` | datetime | ❌ | null | 提交时间 ≤(ISO,统一按 UTC 比较) |
+| `sort_by` | string | ❌ | `id` | 排序列:`id` / `created_at` |
+| `sort_order` | string | ❌ | `desc` | `asc` / `desc` |
 | `limit` | int | ❌ | 20 | 1–100 |
-| `cursor` | int | ❌ | null | 上一页 next_cursor(按 feedback id 倒序,查 `id < cursor`) |
+| `cursor` | int | ❌ | null | 上一页 next_cursor(**offset 分页**,cursor=offset) |
 
 ## 出参
 响应 `200`:`{ items: FeedbackOut[], next_cursor: int|null }`(`next_cursor=null` 表示末页)
@@ -26,9 +31,10 @@
 
 ## 错误码
 - `401` 未带/无效/过期 admin token、管理员被禁用(头带 `WWW-Authenticate: Bearer`)
-- `422` `limit` 超出 1–100 范围 / 字段类型不合法
+- `422` `limit` 超出 1–100 范围 / `sort_by`·`sort_order` 不在允许集 / 字段类型不合法
 
 ## 说明
-- 游标分页约定:结果按 feedback `id` 倒序;`cursor` 传上一页返回的 `next_cursor`;`next_cursor=null` 即末页。
-- `status` / `user_id` 均为精确匹配,可叠加。
+- **offset 分页**(同 [admin-users-list](./admin-users-list.md)):`cursor` 即 offset,传上一页返回的 `next_cursor`;`next_cursor=null` 即末页。改用 offset 是为了在任意列排序下游标语义统一,代价是翻页期间数据变动可能错位一条(admin 低频可接受)。
+- 排序:`sort_by`(id/created_at)× `sort_order`(asc/desc),恒以 `id` 同向兜底次序。
+- `status` / `user_id` 精确匹配、`content` 模糊、`created_from`/`created_to` 时间范围,均可叠加。
 - 关联表 [feedback](../database/feedback.md);截图为相对路径,经 `GET /media/feedback/<file>` 静态读。
diff --git a/docs/api/feedback.md b/docs/api/feedback.md
index 8b65588..259df11 100644
--- a/docs/api/feedback.md
+++ b/docs/api/feedback.md
@@ -7,8 +7,8 @@
 | 字段 | 类型 | 必填 | 说明 |
 |---|---|---|---|
 | `content` | string | ✓ | 反馈正文,**1-2000 字**(strip 后) |
-| `contact` | string | ✓ | 联系方式(微信/QQ/手机号),**1-128 字**,便于回访 |
-| `images` | file[] | ✗ | 截图,**最多 4 张**,每张走头像同款校验(JPEG/PNG/WebP,≤ 5 MB,魔数嗅探) |
+| `contact` | string | ✗ | 联系方式(微信/QQ/手机号),**≤128 字**。原型改版后客户端已不再采集、不传该字段(后端默认空串);保留字段兼容旧端 |
+| `images` | file[] | ✗ | 截图,**最多 6 张**,每张走头像同款校验(JPEG/PNG/WebP,≤ 5 MB,魔数嗅探) |
 
 ## 出参
 响应 `200`:
@@ -29,9 +29,9 @@
 > 不返回上传的 image URL——这是给运营后台看的,客户端通常不需要。
 
 ## 错误码
-- `400` 内容为空 / 内容超 2000 字 / 联系方式为空 / 联系方式超 128 字 / 图片超 4 张 / 单图非法(空/过大/格式不对)
+- `400` 内容为空 / 内容超 2000 字 / 联系方式超 128 字 / 图片超 6 张 / 单图非法(空/过大/格式不对)
 - `401` 未带 token / token 无效或过期 / 用户被禁用
-- `422` 缺 `content` 或 `contact` 字段
+- `422` 缺 `content` 字段
 
 ## 说明
 - **反馈绑用户**:`feedback.user_id = current_user.id`,便于回访
diff --git a/docs/database/feedback.md b/docs/database/feedback.md
index 2261af2..d916b30 100644
--- a/docs/database/feedback.md
+++ b/docs/database/feedback.md
@@ -2,10 +2,10 @@
 
 > 模型 `app/models/feedback.py` · 仓库 `app/repositories/feedback.py` · 接口 [feedback](../api/feedback.md) · admin [admin-feedbacks-list](../api/admin-feedbacks-list.md) / [admin-feedback-handle](../api/admin-feedback-handle.md) · [← 索引](./README.md) · [总览](./OVERVIEW.md)
 
-App「帮助与反馈」每次提交写一行。`content` 与 `contact` 必填,`images` 为可选截图。后台人工处理后置 `handled`。与 `price_report`(结构化上报更低价)不同,本表是**自由文本**反馈。
+App「帮助与反馈」每次提交写一行。`content` 必填;`contact` 原必填,**原型改版后客户端不再采集,新数据存空串**(列保持 NOT NULL、免迁移,历史数据仍有值);`images` 为可选截图(≤6 张)。后台人工处理后置 `handled`。与 `price_report`(结构化上报更低价)不同,本表是**自由文本**反馈。
 
 ## 用在哪 / 增删改查
-- **C(插入)**:`POST /api/v1/feedback`(multipart:`content` + `contact` + 可选 `images`;`create_feedback`)。截图先经 `core.media` 落 `/media/feedback/` 拿相对路径,再随反馈写入,`status='new'`。
+- **C(插入)**:`POST /api/v1/feedback`(multipart:`content` + 可选 `contact` + 可选 `images`;`create_feedback`)。截图先经 `core.media` 落 `/media/feedback/` 拿相对路径,再随反馈写入,`status='new'`。
 - **U(更新)**:admin 处理反馈 `update_feedback_status` → `status='handled'`(同事务写 `admin_audit_log`)。
 - **D**:无。
 - **R**:admin 反馈列表(可按 `status` 筛)。C 端当前无"我的反馈列表"读接口。
@@ -16,7 +16,7 @@ App「帮助与反馈」每次提交写一行。`content` 与 `contact` 必填,`
 | `id` | Integer | PK, autoincrement | |
 | `user_id` | Integer | FK→user.id, index, NOT NULL | 提交用户 |
 | `content` | Text | NOT NULL | 反馈正文 |
-| `contact` | String(128) | NOT NULL | 联系方式(微信/QQ/手机,便于回访) |
+| `contact` | String(128) | NOT NULL | 联系方式(微信/QQ/手机)。客户端改版后不再采集,新数据为空串;列仍 NOT NULL |
 | `images` | JSON | nullable | 截图相对 URL 列表 `/media/feedback/...`;无图为 NULL |
 | `status` | String(16) | NOT NULL, default `new` | 取值:`new`(待处理)/ `handled`(已处理) |
 | `created_at` | DateTime(tz) | server_default now(), index | 提交时间 |
diff --git a/tests/test_admin.py b/tests/test_admin.py
index dea292f..7932a7f 100644
--- a/tests/test_admin.py
+++ b/tests/test_admin.py
@@ -125,7 +125,7 @@ def test_long_password_does_not_crash(admin_client: TestClient) -> None:
 
 
 def test_audit_log_pagination_no_gap() -> None:
-    """审计游标分页跨页不丢/不重(回归 next_cursor off-by-one)。"""
+    """审计分页跨页不丢/不重(offset 分页:cursor 即 offset,翻完覆盖全部)。"""
     from app.admin.repositories import admin_user as admin_repo
     from app.admin.repositories import audit_log as audit_repo
 
@@ -142,12 +142,13 @@ def test_audit_log_pagination_no_gap() -> None:
             )
             created_ids.append(log.id)
 
-        # limit=2 翻 5 条,收集所有 id,应正好覆盖创建的 5 条(无丢无重)
+        # limit=2 翻 5 条,收集所有 id,应正好覆盖创建的 5 条(无丢无重);total 恒为符合条件总数
         seen: list[int] = []
         cursor = None
         for _ in range(10):  # 上限防死循环
-            rows, cursor = audit_repo.list_audit_logs(db, action=action, limit=2, cursor=cursor)
+            rows, cursor, total = audit_repo.list_audit_logs(db, action=action, limit=2, cursor=cursor)
             seen.extend(r.id for r in rows)
+            assert total == len(created_ids), f"total 应为 {len(created_ids)},得 {total}"
             if cursor is None:
                 break
         assert sorted(seen) == sorted(created_ids), f"分页丢/重: want={created_ids} got={seen}"