feat(p1): add daily snapshots and fan tracking

Implement P1: seven-metric view snapshots, relation/stat fan snapshots, failure placeholders, resume by daily completion markers, Cookie login warnings, daily SQLite backups, Shanghai daily scheduling, and CLI snapshot/auth-check commands. Real read-only run captured 795/795 videos successfully over 1124s with a verified daily backup.

DEVELOPMENT.md

@@ -1,6 +1,6 @@
 # 咻咻满 Reaction 视频数据看板开发文档
 
-> **状态：** P0（数据底座与收藏夹同步）已实施并通过只读联调；P1 待开始
+> **状态：** P0（数据底座与收藏夹同步）、P1（每日快照与粉丝追踪）已实施并通过只读联调；P2 待开始
 >
 > **技术基线：** Python 3.14、Python 标准库、SQLite、原生 HTML/CSS/JavaScript、`uv`
 >
@@ -95,6 +95,13 @@ uv run python app.py sync
 uv run python app.py run
 uv run python app.py run --once
 
+# 每日七项快照与粉丝数（P1）
+uv run python app.py snapshot
+uv run python app.py snapshot --force
+
+# 检查 Cookie 登录态（P1）
+uv run python app.py auth-check
+
 # 查看数据库状态（离线，P0）
 uv run python app.py status
 
@@ -388,7 +395,7 @@ score < 0：丢弃
 
 - 对 `status IN ('active', 'unfaved')` 的视频逐条请求 `view?aid=`；
 - 成功写入播放、点赞、收藏、投币、转发、评论、弹幕七项数据；
-- `-404` 时标记 `removed`；
+- `-404` / `62002` / `62012` 时标记 `removed`（62002/62012 为当前实测返回）；
 - 其他错误最多重试 3 次，仍失败则写入 `ok=0` 与错误信息，不写伪造的零值；
 - 每条视频请求之间随机等待 1.0～1.6 秒；
 - 对 `track_fans` 中的每个 mid 请求一次 `relation/stat` 并写入 `up_stat`；
@@ -396,6 +403,15 @@ score < 0：丢弃
 
 服务启动后若当天快照尚未成功完成，应补跑当日任务；已成功的 `(stat_date, aid)` 不重复请求。
 
+P1 实现说明：
+
+- 时区使用固定 UTC+8（中国无夏令时），避免 Windows 缺少 `tzdata`；
+- 当日全部视频与粉丝采集成功后在 `kv` 写入 `snapshot:completed:<date>=1`；启动时未完成会补跑；
+- `ok=0` 的当日记录会在下次补跑时重试；`ok=1` 直接跳过；
+- 每次采集后生成 `data/backup/app-YYYYMMDD.db` 并清理超过 `storage.backup_keep_days` 的日备份；
+- Cookie 登录态通过 `x/web-interface/nav` 检查，失效只告警，不阻塞匿名 `view`；
+- Telegram 摘要推迟到 P3，P1 先写结构化 JSON 日志和 `kv` 状态。
+
 ---
 
 ## 8. Telegram 与收藏操作
@@ -555,12 +571,22 @@ uv run python tests/test_moves.py
 - 黑名单 9 个 mid 已写入 `up_blacklist`，且不参与收藏夹同步过滤；
 - 自动化测试见 `tests/test_config.py`、`test_migrations.py`、`test_database.py`、`test_repository.py`、`test_bilibili_client.py`、`test_folder_sync.py`、`test_scheduler.py`、`test_logging.py`、`test_cli.py`。
 
-### P1：快照与粉丝追踪
+### P1：快照与粉丝追踪 ✅
 
 - 每日七项视频快照；
 - 粉丝快照；
 - 失败占位、断点续跑、Cookie 失效告警、SQLite 备份。
 
+完成情况（2026-10-31）：
+
+- 已实现 `services/snapshot.py`：`view` 七项指标、`relation/stat` 粉丝数、`ok=0` 失败占位、`ok=1` 断点跳过；
+- 实测不可访问视频返回 `62012`，已和旧口径 `-404`、`62002` 一起按 `removed` 处理；
+- `run` 调度器同时注册收藏夹同步与每日 `snapshot_at` 任务，启动时立即检查当日是否完成以支持补跑；
+- 每次快照后生成日备份并清理超过 14 天的日备份；
+- `auth-check` 与快照启动时检查 Cookie 登录态，失效写 `kv` 并告警；
+- 真实全量联调：795 条视频全部 `ok=1`，0 失败、0 移除，耗时 1124 秒；粉丝 `follower=2767270`；日备份 `data/backup/app-20261031.db` 含 795 条快照；二次执行正确命中完成标记并跳过；
+- 自动化测试见 `tests/test_snapshot.py`、`test_maintenance.py`、`test_timeutil.py`，并扩展了 `test_bilibili_client.py` 与 `test_scheduler.py`。
+
 ### P2：本地看板
 
 - 总览、榜单、详情、UP、粉丝、候选和系统状态页面；

README.md

@@ -4,9 +4,9 @@
 
 项目以 B 站年度收藏夹为可信视频来源，补充关键词发现和 Telegram 人工确认，持续采集 reaction 视频的七项数据与咻咻满粉丝数，并提供本地数据看板。现有的收藏夹排序工具仍保留并作为一键加入后的排序能力基础。
 
-> 当前状态：**P0（数据底座与收藏夹同步）已实施，P1 待开始。**
+> 当前状态：**P0（数据底座与收藏夹同步）、P1（快照与粉丝追踪）已实施；P2 待开始。**
 >
-> 当前已可用：扫码授权、收藏夹读取、排序计划生成、执行与校验；SQLite 建库迁移、收藏夹首次导入与增量同步、失效识别、黑名单种子。
+> 当前已可用：扫码授权、收藏夹读取、排序计划生成、执行与校验；SQLite 建库迁移、收藏夹首次导入与增量同步、失效识别、黑名单种子；每日七项视频快照、粉丝数快照、失败占位、断点续跑与日备份。
 >
 > 详细业务口径、接口验证和风险记录见 [project.md](project.md)；开发架构与实施计划见 [DEVELOPMENT.md](DEVELOPMENT.md)。
 
@@ -17,8 +17,8 @@
 | 收藏夹排序 | 可用 | 同一 UP 连续，组内按发布时间倒序，组间按该 UP 最早视频发布时间倒序。 |
 | 扫码授权与 Cookie 续期 | 可用 | 本地生成二维码；更新身份 Cookie 时保留设备指纹。 |
 | 收藏夹同步与首次导入 | 可用（P0） | 监控已配置年度夹，自动发现人工新收藏的视频与失效资源。 |
-| 视频日快照 | 规划（P1） | 逐条采集播放、点赞、投币、收藏、转发、评论、弹幕。 |
-| 粉丝追踪 | 规划（P1） | 每日记录咻咻满等配置 UP 的粉丝数。 |
+| 视频日快照 | 可用（P1） | 逐条采集播放、点赞、投币、收藏、转发、评论、弹幕。 |
+| 粉丝追踪 | 可用（P1） | 每日记录咻咻满等配置 UP 的粉丝数。 |
 | 本地数据看板 | 规划（P2） | 总览、榜单、视频/UP 详情、粉丝曲线、候选池和系统状态。 |
 | Telegram 发现与一键加入 | 规划（P3） | 每小时发现候选，支持收藏、忽略、拉黑和收藏夹内定位。 |
 
@@ -68,7 +68,7 @@ uv run python app.py init
 # 首次导入或增量同步配置中的年度收藏夹（只读联网）
 uv run python app.py sync
 
-# 按 folder_sync_minutes 常驻周期同步；--once 只跑一次
+# 按配置周期常驻运行收藏夹同步 + 每日快照；--once 只跑一次到期任务
 uv run python app.py run
 uv run python app.py run --once
 
@@ -86,6 +86,32 @@ uv run python app.py status
 - 黑名单只作为发现阶段的种子写入，**不会过滤收藏夹同步**；
 - 收藏夹达到 950 条时预警，系统绝不自动换夹。
 
+## P1：每日快照与粉丝追踪
+
+P1 已实现每日七项视频指标快照、咻咻满粉丝数快照、失败占位、断点续跑、Cookie 失效告警和 SQLite 日备份。
+
+```powershell
+# 采集当日快照与粉丝数（只读联网，约 18～20 分钟 / 795 条）
+uv run python app.py snapshot
+
+# 忽略当日完成标记，重新采集
+uv run python app.py snapshot --force
+
+# 检查 Cookie 登录态
+uv run python app.py auth-check
+```
+
+- `snapshot` 对 `active` / `unfaved` 视频逐条请求 `view`，每条请求间隔 1.0～1.6 秒；
+- 成功写入 `snapshot` 的七项指标；同日 `ok=1` 的记录直接跳过，可断点续跑；
+- 视频不可访问（`-404` / `62002` / `62012`）标记为 `removed`；
+- 其他错误重试 3 次，仍失败写入 `ok=0` 和错误信息，不写伪造的零值；
+- 粉丝数写入 `up_stat`，失败同样写 `ok=0`；
+- 当日全部视频与粉丝采集成功后写入完成标记；服务启动时若当天未完成会自动补跑；
+- 每次采集后生成 `data/backup/app-YYYYMMDD.db`，按 `storage.backup_keep_days` 清理旧日备份；
+- Cookie 失效只告警，不阻塞匿名 `view` 采集；`auth-check` 可单独检查。
+
+首次真实全量采集结果：795 条视频全部成功、0 失败、0 移除，耗时约 19 分钟；粉丝 `follower=2767270`；日备份为 `data/backup/app-20261031.db`。
+
 ## 配置
 
 复制样例配置，并填写 B 站账号信息：
@@ -198,8 +224,11 @@ uv run python tests/test_config.py          # 配置加载、校验、ENV 覆盖
 uv run python tests/test_migrations.py      # 迁移、备份、回滚与保留期
 uv run python tests/test_database.py        # 单写队列、事务与并发
 uv run python tests/test_repository.py      # 收藏夹/视频状态机与黑名单
-uv run python tests/test_bilibili_client.py # ids/infos 契约、分块、缺失与重试
+uv run python tests/test_bilibili_client.py # ids/infos/view/fans/nav 契约与重试
 uv run python tests/test_folder_sync.py     # 首次导入、差集、失效识别、容量预警
+uv run python tests/test_snapshot.py        # 七项快照、断点续跑、失败占位、粉丝
+uv run python tests/test_maintenance.py     # 日备份与保留期
+uv run python tests/test_timeutil.py        # 上海时区与每日任务时间
 uv run python tests/test_scheduler.py       # 内置调度器到期/失败隔离
 uv run python tests/test_logging.py         # JSON 日志脱敏
 uv run python tests/test_cli.py             # CLI 离线路径
@@ -211,8 +240,9 @@ uv run python tests/test_cli.py             # CLI 离线路径
 config.json.bak                最近一次 auth 更新前的配置备份
 data/plan-<media_id>.json     排序计划、顺序快照和元数据缓存
 data/journal-<media_id>.jsonl 排序执行日志
-data/app.db                    P0 起的 SQLite 数据库（收藏夹、视频、黑名单）
-data/backup/                  数据库迁移前的自动备份
+data/app.db                    SQLite 数据库（收藏夹、视频、快照、粉丝、黑名单）
+data/backup/app-YYYYMMDD.db    每日快照后的 SQLite 备份
+data/backup/app-pre-v*.db      数据库迁移前的自动备份
 ```
 
 ## 文档索引

app.py

@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
 """看板服务入口。
 
-P0 提供 ``init`` / ``sync`` / ``run`` / ``status`` 子命令；后续阶段会在同一入口启动
-本地 Web 服务。
+P1 提供 ``init`` / ``sync`` / ``snapshot`` / ``auth-check`` / ``run`` / ``status``
+子命令；后续阶段会在同一入口启动本地 Web 服务。
 """
 
 import sys

project.md

@@ -1,7 +1,7 @@
 # 咻咻满 Reaction 视频数据看板 —— 可行性分析与技术路线
 
-> 状态：**设计定稿；P0（数据底座与收藏夹同步）已实施并完成只读联调**
-> 最后更新：2026-10-31（第 5 轮：P0 落地）
+> 状态：**设计定稿；P0（数据底座与收藏夹同步）、P1（每日快照与粉丝追踪）已实施**
+> 最后更新：2026-10-31（第 6 轮：P1 落地）
 > 全部探测均为只读（GET），未调用 `fav/resource/deal`、`fav/resource/sort`
 
 ---
@@ -770,6 +770,11 @@ storage：SQLite WAL，单写线程
 | 21 | **搜索 item 的 duration 格式** | `分钟:秒`（`105:5`、`336:31`），超 60 分钟不转小时 |
 | 22 | **搜索 item 自带统计字段** | `play/like/favorites/danmaku/review/duration/cover/pubdate/mid/uname` 齐全，通知可用索引值 |
 | 23 | **初始黑名单 9 个 mid 核对** | `x/web-interface/card` 全部 `code=0`，昵称/粉丝数已记录（§1.6） |
+| 24 | `x/web-interface/view` 七项 stat | `code=0`，view/like/favorite/coin/share/reply/danmaku 齐全 |
+| 25 | `view` 不可访问返回码 | 实测为 `62012`；代码同时兼容 `-404`、`62002`、HTTP 404 |
+| 26 | `x/relation/stat` 粉丝数 | `code=0`，匿名可用，实测 `follower=2767268` |
+| 27 | `x/web-interface/nav` 登录态 | `code=0`、`isLogin=true`、mid=28802351 |
+| 28 | **P1 真实全量快照** | 795 条全部 `ok=1`、0 失败、0 移除；耗时 1124s；粉丝 `follower=2767270`；日备份 `app-20261031.db` 含 795 条快照 |
 
 **未验证（需授权或外部配合）**：
 

reaction_board/bilibili/client.py

@@ -18,11 +18,21 @@ from dataclasses import dataclass
 from typing import Any, Mapping, Protocol, Sequence
 
 from .auth import make_headers
-from .models import FavId, FavResource, FolderInfo, InfosResult
+from .models import (
+    FanStat,
+    FavId,
+    FavResource,
+    FolderInfo,
+    InfosResult,
+    LoginState,
+    ViewStat,
+)
 
 BASE = "https://api.bilibili.com"
 DEFAULT_CHUNK = 200
 MAX_CHUNK = 400
+# 视频不可访问/已删除：-404 为旧口径，62002/62012 为当前实测返回。
+VIDEO_UNAVAILABLE_CODES = frozenset({-404, 62002, 62012})
 
 
 class BilibiliError(RuntimeError):
@@ -360,3 +370,64 @@ class BilibiliClient:
                 media_count=count,
             ))
         return out
+
+    # ------------------------------------------------------------ view / fan
+
+    def view(self, aid: int) -> ViewStat:
+        url = f"{BASE}/x/web-interface/view?aid={int(aid)}"
+        payload = self.get_json(url)
+        data = payload.get("data")
+        if not isinstance(data, Mapping):
+            raise BilibiliProtocolError("view data 不是对象")
+        try:
+            return ViewStat.from_api(data)
+        except (TypeError, ValueError) as exc:
+            raise BilibiliProtocolError(f"view 解析失败: {exc}") from exc
+
+    def relation_stat(self, mid: int) -> FanStat:
+        url = f"{BASE}/x/relation/stat?vmid={int(mid)}"
+        payload = self.get_json(url)
+        data = payload.get("data")
+        if not isinstance(data, Mapping):
+            raise BilibiliProtocolError("relation/stat data 不是对象")
+        try:
+            return FanStat.from_api(data)
+        except (TypeError, ValueError) as exc:
+            raise BilibiliProtocolError(f"relation/stat 解析失败: {exc}") from exc
+
+    def check_login(self) -> LoginState:
+        """检查 Cookie 登录态；未配置 Cookie 时不发请求。"""
+        if not self.cookie:
+            return LoginState(
+                is_login=False,
+                mid=None,
+                uname=None,
+                code=0,
+                message="未配置 cookie",
+            )
+        url = f"{BASE}/x/web-interface/nav"
+        try:
+            payload = self.get_json(url, auth=True)
+        except BilibiliAPIError as exc:
+            return LoginState(
+                is_login=False, mid=None, uname=None,
+                code=exc.code, message=exc.message,
+            )
+        except BilibiliError as exc:
+            return LoginState(
+                is_login=False, mid=None, uname=None,
+                code=-1, message=str(exc),
+            )
+        data = payload.get("data") or {}
+        if not isinstance(data, Mapping):
+            raise BilibiliProtocolError("nav data 不是对象")
+        raw_mid = data.get("mid")
+        mid = raw_mid if isinstance(raw_mid, int) and not isinstance(raw_mid, bool) else None
+        uname = data.get("uname")
+        return LoginState(
+            is_login=bool(data.get("isLogin")),
+            mid=mid,
+            uname=str(uname) if isinstance(uname, str) else None,
+            code=0,
+            message=str(payload.get("message") or ""),
+        )

reaction_board/bilibili/models.py

@@ -85,3 +85,83 @@ class InfosResult:
     requested: tuple[int, ...]
     items: dict[int, FavResource]
     missing: tuple[int, ...]
+
+
+@dataclass(frozen=True)
+class ViewStat:
+    """``x/web-interface/view`` 的七项统计。"""
+
+    aid: int
+    bvid: str | None
+    title: str
+    view: int
+    like: int
+    favorite: int
+    coin: int
+    share: int
+    reply: int
+    danmaku: int
+
+    def metrics(self) -> dict[str, int]:
+        return {
+            "view": self.view,
+            "like": self.like,
+            "favorite": self.favorite,
+            "coin": self.coin,
+            "share": self.share,
+            "reply": self.reply,
+            "danmaku": self.danmaku,
+        }
+
+    @classmethod
+    def from_api(cls, item: Mapping[str, Any]) -> "ViewStat":
+        aid = item.get("aid")
+        if isinstance(aid, bool) or not isinstance(aid, int):
+            raise ValueError("view data.aid 不是整数")
+        stat = item.get("stat")
+        if not isinstance(stat, Mapping):
+            raise ValueError("view data.stat 不是对象")
+        metrics: dict[str, int] = {}
+        for key in ("view", "like", "favorite", "coin", "share", "reply", "danmaku"):
+            value = stat.get(key)
+            if isinstance(value, bool) or not isinstance(value, int) or value < 0:
+                raise ValueError(f"view stat.{key} 不是非负整数")
+            metrics[key] = value
+        bvid = item.get("bvid")
+        if not isinstance(bvid, str) or not bvid:
+            bvid = None
+        return cls(
+            aid=aid,
+            bvid=bvid,
+            title=str(item.get("title") or ""),
+            **metrics,
+        )
+
+
+@dataclass(frozen=True)
+class FanStat:
+    mid: int
+    follower: int
+    following: int
+
+    @classmethod
+    def from_api(cls, item: Mapping[str, Any]) -> "FanStat":
+        mid = item.get("mid")
+        follower = item.get("follower")
+        following = item.get("following", 0)
+        if isinstance(mid, bool) or not isinstance(mid, int):
+            raise ValueError("relation/stat data.mid 不是整数")
+        if isinstance(follower, bool) or not isinstance(follower, int) or follower < 0:
+            raise ValueError("relation/stat data.follower 不是非负整数")
+        if isinstance(following, bool) or not isinstance(following, int) or following < 0:
+            raise ValueError("relation/stat data.following 不是非负整数")
+        return cls(mid=mid, follower=follower, following=following)
+
+
+@dataclass(frozen=True)
+class LoginState:
+    is_login: bool
+    mid: int | None
+    uname: str | None
+    code: int
+    message: str

reaction_board/cli.py

@@ -1,10 +1,12 @@
 # -*- coding: utf-8 -*-
-"""P0 命令行入口。
+"""看板命令行入口。
 
-    python app.py init    # 建库 / 迁移 / 写入黑名单种子（离线）
-    python app.py sync    # 收藏夹只读同步（首次导入或增量）
-    python app.py run     # 按 folder_sync_minutes 常驻周期同步（--once 只跑一次）
-    python app.py status  # 查看库内状态（离线）
+    python app.py init        # 建库 / 迁移 / 写入黑名单种子（离线）
+    python app.py sync        # 收藏夹只读同步（首次导入或增量）
+    python app.py snapshot    # 采集当日七项快照与粉丝数
+    python app.py auth-check  # 检查 Cookie 登录态
+    python app.py run         # 按配置周期常驻运行（--once 只跑一次）
+    python app.py status      # 查看库内状态（离线）
 
 P2 起 ``python app.py`` 将在此基础上启动本地看板服务。
 """
@@ -17,13 +19,15 @@ import sys
 from pathlib import Path
 from typing import Sequence
 
-from .bilibili.client import BilibiliClient
+from .bilibili.client import BilibiliClient, Pacer
 from .config import ConfigError, ConfigStore
 from .database import Database
 from .logging_json import JsonLogger
 from .repository import Repository
 from .scheduler import ScheduledTask, Scheduler
 from .services.folder_sync import FolderSyncService
+from .services.snapshot import SnapshotService
+from .timeutil import next_daily_run, parse_hhmm, shanghai_date
 
 ROOT = Path(__file__).resolve().parent.parent
 DEFAULT_CONFIG = ROOT / "config.json"
@@ -39,7 +43,7 @@ def _build_parser() -> argparse.ArgumentParser:
 
     parser = argparse.ArgumentParser(
         prog="app.py",
-        description="咻咻满 Reaction 数据看板 —— P0 数据底座",
+        description="咻咻满 Reaction 数据看板 —— 数据底座、同步与每日快照",
     )
     sub = parser.add_subparsers(dest="command", required=True)
 
@@ -48,7 +52,14 @@ def _build_parser() -> argparse.ArgumentParser:
     sync.add_argument(
         "--full", action="store_true", help="强制全量刷新元数据（忽略 6 小时周期）"
     )
-    run = sub.add_parser("run", parents=[common], help="按配置周期常驻运行收藏夹同步")
+    snapshot = sub.add_parser(
+        "snapshot", parents=[common], help="采集当日七项快照与粉丝数"
+    )
+    snapshot.add_argument(
+        "--force", action="store_true", help="忽略当日完成标记，重新采集"
+    )
+    sub.add_parser("auth-check", parents=[common], help="检查 Cookie 登录态")
+    run = sub.add_parser("run", parents=[common], help="按配置周期常驻运行同步与快照")
     run.add_argument(
         "--once", action="store_true", help="只执行一次到期任务后退出"
     )
@@ -71,6 +82,17 @@ def _print(payload) -> None:
     print(json.dumps(payload, ensure_ascii=False, indent=2), flush=True)
 
 
+def _client(cfg, logger: JsonLogger, *, pacer=None, retries: int = 3) -> BilibiliClient:
+    return BilibiliClient(
+        cookie=cfg.bilibili.cookie,
+        csrf=cfg.bilibili.csrf,
+        mid=cfg.bilibili.mid,
+        pacer=pacer,
+        retries=retries,
+        logger=logger,
+    )
+
+
 def cmd_init(args, logger: JsonLogger) -> int:
     store = ConfigStore(args.config, require_auth=False)
     cfg = store.get()
@@ -98,12 +120,7 @@ def cmd_sync(args, logger: JsonLogger) -> int:
     db = _open_db(cfg, logger)
     try:
         repo = Repository(db)
-        client = BilibiliClient(
-            cookie=cfg.bilibili.cookie,
-            csrf=cfg.bilibili.csrf,
-            mid=cfg.bilibili.mid,
-            logger=logger,
-        )
+        client = _client(cfg, logger)
         service = FolderSyncService(store, repo, client, logger=logger)
         summary = service.run(full_refresh=args.full)
         payload = summary.as_dict()
@@ -115,6 +132,46 @@ def cmd_sync(args, logger: JsonLogger) -> int:
         db.close()
 
 
+def cmd_snapshot(args, logger: JsonLogger) -> int:
+    store = ConfigStore(args.config, require_auth=False)
+    cfg = store.get()
+    db = _open_db(cfg, logger)
+    try:
+        repo = Repository(db)
+        client = _client(
+            cfg, logger, pacer=Pacer(1.0, 1.6), retries=1
+        )
+        service = SnapshotService(store, repo, client, logger=logger)
+        summary = service.run_if_needed(force=args.force)
+        payload = summary.as_dict()
+        payload["database"] = str(cfg.storage.database_path)
+        payload["snapshot_counts"] = repo.snapshot_counts(summary.stat_date)
+        payload["counts"] = repo.counts()
+        _print(payload)
+        return 0 if summary.completed else 1
+    finally:
+        db.close()
+
+
+def cmd_auth_check(args, logger: JsonLogger) -> int:
+    store = ConfigStore(args.config, require_auth=False)
+    cfg = store.get()
+    if not cfg.bilibili.cookie:
+        _print({"ok": False, "is_login": False, "message": "未配置 cookie"})
+        return 1
+    client = _client(cfg, logger, retries=1)
+    state = client.check_login()
+    _print({
+        "ok": state.is_login,
+        "is_login": state.is_login,
+        "mid": state.mid,
+        "uname": state.uname,
+        "code": state.code,
+        "message": state.message,
+    })
+    return 0 if state.is_login else 1
+
+
 def cmd_run(args, logger: JsonLogger) -> int:
     store = ConfigStore(args.config, require_auth=True)
     cfg = store.get()
@@ -122,26 +179,40 @@ def cmd_run(args, logger: JsonLogger) -> int:
     last: dict[str, object] = {}
     try:
         repo = Repository(db)
-        client = BilibiliClient(
-            cookie=cfg.bilibili.cookie,
-            csrf=cfg.bilibili.csrf,
-            mid=cfg.bilibili.mid,
-            logger=logger,
-        )
-        service = FolderSyncService(store, repo, client, logger=logger)
+        folder_client = _client(cfg, logger)
+        folder_service = FolderSyncService(store, repo, folder_client, logger=logger)
+        snapshot_client = _client(cfg, logger, pacer=Pacer(1.0, 1.6), retries=1)
+        snapshot_service = SnapshotService(store, repo, snapshot_client, logger=logger)
 
         def run_sync():
-            summary = service.run()
-            last["summary"] = summary
+            summary = folder_service.run()
+            last["folder"] = summary
             logger.info("folder_sync.summary", **summary.as_dict())
             return summary
 
+        def run_snapshot():
+            summary = snapshot_service.run_if_needed()
+            last["snapshot"] = summary
+            logger.info("snapshot.summary", **summary.as_dict())
+            return summary
+
+        hh, mm = parse_hhmm(cfg.schedule.snapshot_at)
+        snapshot_at = f"{hh:02d}:{mm:02d}"
         scheduler = Scheduler(
-            [ScheduledTask(
-                "folder_sync",
-                float(cfg.schedule.folder_sync_minutes * 60),
-                run_sync,
-            )],
+            [
+                ScheduledTask(
+                    "folder_sync",
+                    float(cfg.schedule.folder_sync_minutes * 60),
+                    run_sync,
+                ),
+                ScheduledTask(
+                    "snapshot",
+                    86400.0,
+                    run_snapshot,
+                    next_run=0.0,
+                    next_run_fn=lambda started: next_daily_run(started, snapshot_at),
+                ),
+            ],
             logger=logger,
         )
         if args.once:
@@ -150,11 +221,16 @@ def cmd_run(args, logger: JsonLogger) -> int:
         else:
             logger.info(
                 "scheduler.start",
-                interval_seconds=cfg.schedule.folder_sync_minutes * 60,
+                folder_sync_seconds=cfg.schedule.folder_sync_minutes * 60,
+                snapshot_at=snapshot_at,
             )
             scheduler.run_forever()
-        summary = last.get("summary")
-        return 0 if summary is None or getattr(summary, "ok", True) else 1
+
+        folder_summary = last.get("folder")
+        snapshot_summary = last.get("snapshot")
+        folder_ok = folder_summary is None or getattr(folder_summary, "ok", True)
+        snapshot_ok = snapshot_summary is None or getattr(snapshot_summary, "completed", True)
+        return 0 if folder_ok and snapshot_ok else 1
     finally:
         db.close()
 
@@ -165,6 +241,15 @@ def cmd_status(args, logger: JsonLogger) -> int:
     db = _open_db(cfg, logger)
     try:
         repo = Repository(db)
+        today = shanghai_date()
+        snapshot = repo.snapshot_counts(today)
+        snapshot.update({
+            "date": today,
+            "last_attempt": repo.kv_get("snapshot:last_attempt"),
+            "last_completed": repo.kv_get("snapshot:last_completed"),
+            "auth_ok": repo.kv_get("auth:ok"),
+            "auth_message": repo.kv_get("auth:message"),
+        })
         _print({
             "ok": True,
             "schema_version": db.schema_version,
@@ -181,6 +266,7 @@ def cmd_status(args, logger: JsonLogger) -> int:
                 }
                 for row in repo.list_folders()
             ],
+            "snapshot": snapshot,
             **repo.counts(),
         })
     finally:
@@ -196,6 +282,10 @@ def main(argv: Sequence[str] | None = None) -> int:
             return cmd_init(args, logger)
         if args.command == "sync":
             return cmd_sync(args, logger)
+        if args.command == "snapshot":
+            return cmd_snapshot(args, logger)
+        if args.command == "auth-check":
+            return cmd_auth_check(args, logger)
         if args.command == "run":
             return cmd_run(args, logger)
         if args.command == "status":

reaction_board/database.py

@@ -7,6 +7,7 @@
 
 from __future__ import annotations
 
+import os
 import queue
 import sqlite3
 import threading
@@ -165,6 +166,25 @@ class Database:
         finally:
             conn.close()
 
+    def backup_to(self, target: str | Path) -> Path:
+        """用 SQLite backup API 生成一致性备份；先写临时文件再原子替换。"""
+        target = Path(target)
+        target.parent.mkdir(parents=True, exist_ok=True)
+        tmp = target.with_name(target.name + ".tmp")
+        if tmp.exists():
+            tmp.unlink()
+
+        def run(conn: sqlite3.Connection) -> None:
+            dst = sqlite3.connect(tmp)
+            try:
+                conn.backup(dst)
+            finally:
+                dst.close()
+
+        self.write(run)
+        os.replace(tmp, target)
+        return target
+
     def close(self) -> None:
         if self._closed:
             return

reaction_board/repository.py

@@ -10,7 +10,7 @@ from __future__ import annotations
 import sqlite3
 import time
 from dataclasses import dataclass
-from typing import Any, Iterable
+from typing import Any, Iterable, Mapping
 
 from .config import FolderConfig
 from .database import Database
@@ -368,6 +368,136 @@ class Repository:
             return [dict(row) for row in rows]
         return self.db.read(run)
 
+    # ------------------------------------------------------------ snapshot
+
+    def video_aids_for_snapshot(self) -> list[int]:
+        def run(conn: sqlite3.Connection) -> list[int]:
+            rows = conn.execute(
+                "SELECT aid FROM video WHERE status IN ('active', 'unfaved') "
+                "ORDER BY aid"
+            ).fetchall()
+            return [int(row["aid"]) for row in rows]
+        return self.db.read(run)
+
+    def get_snapshot(self, stat_date: str, aid: int) -> dict[str, Any] | None:
+        def run(conn: sqlite3.Connection) -> dict[str, Any] | None:
+            row = conn.execute(
+                "SELECT * FROM snapshot WHERE stat_date = ? AND aid = ?",
+                (stat_date, int(aid)),
+            ).fetchone()
+            return dict(row) if row else None
+        return self.db.read(run)
+
+    def upsert_snapshot(
+        self,
+        stat_date: str,
+        aid: int,
+        *,
+        metrics: Mapping[str, int] | None,
+        ok: bool,
+        err: str | None,
+        captured_at: int,
+        src: str = "view",
+    ) -> None:
+        values = metrics or {}
+        def run(conn: sqlite3.Connection) -> None:
+            conn.execute(
+                """
+                INSERT INTO snapshot(stat_date, aid, "view", "like", favorite, coin,
+                                     share, reply, danmaku, captured_at, ok, err, src)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+                ON CONFLICT(stat_date, aid) DO UPDATE SET
+                  "view" = excluded."view",
+                  "like" = excluded."like",
+                  favorite = excluded.favorite,
+                  coin = excluded.coin,
+                  share = excluded.share,
+                  reply = excluded.reply,
+                  danmaku = excluded.danmaku,
+                  captured_at = excluded.captured_at,
+                  ok = excluded.ok,
+                  err = excluded.err,
+                  src = excluded.src
+                """,
+                (
+                    stat_date,
+                    int(aid),
+                    values.get("view"),
+                    values.get("like"),
+                    values.get("favorite"),
+                    values.get("coin"),
+                    values.get("share"),
+                    values.get("reply"),
+                    values.get("danmaku"),
+                    int(captured_at),
+                    1 if ok else 0,
+                    err,
+                    src,
+                ),
+            )
+        self.db.write(run)
+
+    def snapshot_counts(self, stat_date: str) -> dict[str, int]:
+        def run(conn: sqlite3.Connection) -> dict[str, int]:
+            rows = conn.execute(
+                "SELECT ok, COUNT(*) AS n FROM snapshot WHERE stat_date = ? GROUP BY ok",
+                (stat_date,),
+            ).fetchall()
+            by_ok = {int(row["ok"]): int(row["n"]) for row in rows}
+            return {
+                "total": sum(by_ok.values()),
+                "ok": by_ok.get(1, 0),
+                "failed": by_ok.get(0, 0),
+            }
+        return self.db.read(run)
+
+    def upsert_up_stat(
+        self,
+        stat_date: str,
+        mid: int,
+        *,
+        follower: int | None,
+        following: int | None,
+        ok: bool,
+        captured_at: int,
+    ) -> None:
+        self.db.write(lambda conn: conn.execute(
+            """
+            INSERT INTO up_stat(stat_date, mid, follower, following, captured_at, ok)
+            VALUES (?, ?, ?, ?, ?, ?)
+            ON CONFLICT(stat_date, mid) DO UPDATE SET
+              follower = excluded.follower,
+              following = excluded.following,
+              captured_at = excluded.captured_at,
+              ok = excluded.ok
+            """,
+            (stat_date, int(mid), follower, following, int(captured_at), 1 if ok else 0),
+        ))
+
+    def get_up_stat(self, stat_date: str, mid: int) -> dict[str, Any] | None:
+        def run(conn: sqlite3.Connection) -> dict[str, Any] | None:
+            row = conn.execute(
+                "SELECT * FROM up_stat WHERE stat_date = ? AND mid = ?",
+                (stat_date, int(mid)),
+            ).fetchone()
+            return dict(row) if row else None
+        return self.db.read(run)
+
+    # ------------------------------------------------------------ kv
+
+    def kv_get(self, key: str) -> str | None:
+        def run(conn: sqlite3.Connection) -> str | None:
+            row = conn.execute("SELECT v FROM kv WHERE k = ?", (key,)).fetchone()
+            return None if row is None else str(row["v"])
+        return self.db.read(run)
+
+    def kv_set(self, key: str, value: str) -> None:
+        self.db.write(lambda conn: conn.execute(
+            "INSERT INTO kv(k, v) VALUES (?, ?) "
+            "ON CONFLICT(k) DO UPDATE SET v = excluded.v",
+            (key, str(value)),
+        ))
+
     # ------------------------------------------------------------ blacklist
 
     def seed_blacklist(self, mids: Iterable[int], *, now: int | None = None) -> int:

reaction_board/scheduler.py

@@ -18,6 +18,7 @@ class ScheduledTask:
     interval: float
     fn: Callable[[], Any]
     next_run: float = 0.0
+    next_run_fn: Callable[[float], float] | None = None
 
 
 @dataclass
@@ -77,7 +78,10 @@ class Scheduler:
             else:
                 self._log("info", "scheduler.task_ok", task=task.name)
             finished = self._clock()
-            task.next_run = started + task.interval
+            if task.next_run_fn is not None:
+                task.next_run = task.next_run_fn(started)
+            else:
+                task.next_run = started + task.interval
             result = TaskResult(
                 name=task.name,
                 started_at=started,

reaction_board/services/maintenance.py

@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+"""备份与保留期清理。"""
+
+from __future__ import annotations
+
+import time
+from pathlib import Path
+
+from ..database import Database
+
+
+def daily_backup_path(backup_dir: str | Path, stat_date: str) -> Path:
+    compact = stat_date.replace("-", "")
+    return Path(backup_dir) / f"app-{compact}.db"
+
+
+def backup_daily(
+    db: Database,
+    backup_dir: str | Path,
+    stat_date: str,
+    *,
+    logger=None,
+) -> Path:
+    target = daily_backup_path(backup_dir, stat_date)
+    db.backup_to(target)
+    if logger is not None:
+        logger.info("backup.daily", path=str(target), stat_date=stat_date)
+    return target
+
+
+def prune_daily_backups(
+    backup_dir: str | Path,
+    *,
+    keep_days: int,
+    now: float | None = None,
+) -> list[Path]:
+    """只清理 ``app-YYYYMMDD.db`` 日备份，不动迁移备份。"""
+    target_dir = Path(backup_dir)
+    if not target_dir.is_dir():
+        return []
+    cutoff = (time.time() if now is None else now) - keep_days * 86400
+    removed: list[Path] = []
+    for path in target_dir.glob("app-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9].db"):
+        try:
+            if path.stat().st_mtime < cutoff:
+                path.unlink()
+                removed.append(path)
+        except OSError:
+            continue
+    return removed

reaction_board/services/snapshot.py

@@ -0,0 +1,313 @@
+# -*- coding: utf-8 -*-
+"""每日视频七项快照与粉丝数采集。
+
+规则（DEVELOPMENT.md §7.4）：
+
+* 对 ``active`` / ``unfaved`` 视频逐条请求 ``view``；
+* 成功写入七项指标；``ok=1`` 的同日快照直接跳过（断点续跑）；
+* 视频不可访问时标记 ``removed``；
+* 其他错误最多重试 3 次，仍失败写 ``ok=0`` 占位，不写假零值；
+* 对 ``track_fans`` 逐个请求 ``relation/stat``；
+* 完成后写入当日完成标记并生成日备份。
+"""
+
+from __future__ import annotations
+
+import time
+from dataclasses import dataclass, field
+from typing import Any
+
+from ..bilibili.client import (
+    VIDEO_UNAVAILABLE_CODES,
+    BilibiliAPIError,
+    BilibiliClient,
+    BilibiliError,
+    BilibiliHTTPError,
+)
+from ..config import AppConfig, ConfigStore
+from ..repository import Repository
+from ..timeutil import is_date, shanghai_date
+from .maintenance import backup_daily, prune_daily_backups
+
+
+@dataclass
+class SnapshotSummary:
+    stat_date: str
+    started_at: int
+    total: int = 0
+    success: int = 0
+    failed: int = 0
+    skipped: int = 0
+    removed: int = 0
+    fans_ok: int = 0
+    fans_failed: int = 0
+    auth_ok: bool | None = None
+    auth_message: str = ""
+    backup_path: str | None = None
+    backup_error: str | None = None
+    completed: bool = False
+    already_completed: bool = False
+    finished_at: int = 0
+    errors: list[str] = field(default_factory=list)
+
+    def as_dict(self) -> dict[str, Any]:
+        return {
+            "stat_date": self.stat_date,
+            "started_at": self.started_at,
+            "finished_at": self.finished_at,
+            "elapsed": max(0, self.finished_at - self.started_at),
+            "total": self.total,
+            "success": self.success,
+            "failed": self.failed,
+            "skipped": self.skipped,
+            "removed": self.removed,
+            "fans_ok": self.fans_ok,
+            "fans_failed": self.fans_failed,
+            "auth_ok": self.auth_ok,
+            "auth_message": self.auth_message,
+            "backup_path": self.backup_path,
+            "backup_error": self.backup_error,
+            "completed": self.completed,
+            "already_completed": self.already_completed,
+            "errors": self.errors,
+        }
+
+
+class SnapshotService:
+    def __init__(
+        self,
+        config_store: ConfigStore,
+        repository: Repository,
+        client: BilibiliClient,
+        *,
+        clock=time.time,
+        sleeper=time.sleep,
+        logger=None,
+        retries: int = 3,
+        backoff: float = 5.0,
+        progress_every: int = 50,
+    ) -> None:
+        if retries < 1:
+            raise ValueError("retries 必须 >= 1")
+        self.config_store = config_store
+        self.repo = repository
+        self.client = client
+        self._clock = clock
+        self._sleep = sleeper
+        self.logger = logger
+        self.retries = retries
+        self.backoff = backoff
+        self.progress_every = progress_every
+
+    def _now(self) -> int:
+        return int(self._clock())
+
+    def _log(self, level: str, event: str, **fields) -> None:
+        if self.logger is not None:
+            getattr(self.logger, level)(event, **fields)
+
+    @staticmethod
+    def completed_key(stat_date: str) -> str:
+        return f"snapshot:completed:{stat_date}"
+
+    def run_if_needed(
+        self, *, date: str | None = None, force: bool = False
+    ) -> SnapshotSummary:
+        now = self._now()
+        stat_date = date or shanghai_date(now)
+        if not is_date(stat_date):
+            raise ValueError(f"日期格式必须是 YYYY-MM-DD: {stat_date!r}")
+        if not force and self.repo.kv_get(self.completed_key(stat_date)) == "1":
+            self._log("info", "snapshot.skip", stat_date=stat_date, reason="already_completed")
+            return SnapshotSummary(
+                stat_date=stat_date,
+                started_at=now,
+                finished_at=now,
+                completed=True,
+                already_completed=True,
+            )
+        return self.run(date=stat_date, force=force)
+
+    def run(self, *, date: str | None = None, force: bool = False) -> SnapshotSummary:
+        cfg = self.config_store.get()
+        now = self._now()
+        stat_date = date or shanghai_date(now)
+        if not is_date(stat_date):
+            raise ValueError(f"日期格式必须是 YYYY-MM-DD: {stat_date!r}")
+
+        summary = SnapshotSummary(stat_date=stat_date, started_at=now)
+        self._log("info", "snapshot.start", stat_date=stat_date, force=force)
+
+        summary.auth_ok, summary.auth_message = self._check_auth(cfg, now)
+
+        videos = self.repo.video_aids_for_snapshot()
+        summary.total = len(videos)
+        for index, aid in enumerate(videos, 1):
+            existing = self.repo.get_snapshot(stat_date, aid)
+            if existing is not None and int(existing.get("ok") or 0) == 1 and not force:
+                summary.skipped += 1
+                continue
+
+            stat, error, unavailable = self._fetch_view(aid)
+            if unavailable:
+                summary.removed += 1
+                self.repo.set_video_status(aid, "removed", now=now)
+                self._log(
+                    "warning", "snapshot.removed",
+                    stat_date=stat_date, aid=aid, error=error,
+                )
+            elif stat is not None:
+                self.repo.upsert_snapshot(
+                    stat_date,
+                    aid,
+                    metrics=stat.metrics(),
+                    ok=True,
+                    err=None,
+                    captured_at=self._now(),
+                )
+                summary.success += 1
+            else:
+                summary.failed += 1
+                self.repo.upsert_snapshot(
+                    stat_date,
+                    aid,
+                    metrics=None,
+                    ok=False,
+                    err=error,
+                    captured_at=self._now(),
+                )
+                summary.errors.append(f"aid {aid}: {error}")
+                self._log(
+                    "error", "snapshot.failed",
+                    stat_date=stat_date, aid=aid, error=error,
+                )
+
+            if self.progress_every > 0 and (
+                index % self.progress_every == 0 or index == summary.total
+            ):
+                self._log(
+                    "info", "snapshot.progress",
+                    stat_date=stat_date, done=index, total=summary.total,
+                    success=summary.success, failed=summary.failed,
+                    skipped=summary.skipped, removed=summary.removed,
+                )
+
+        for mid in cfg.track_fans:
+            stat, error = self._fetch_fan(mid)
+            if stat is not None:
+                self.repo.upsert_up_stat(
+                    stat_date,
+                    mid,
+                    follower=stat.follower,
+                    following=stat.following,
+                    ok=True,
+                    captured_at=self._now(),
+                )
+                summary.fans_ok += 1
+            else:
+                summary.fans_failed += 1
+                self.repo.upsert_up_stat(
+                    stat_date,
+                    mid,
+                    follower=None,
+                    following=None,
+                    ok=False,
+                    captured_at=self._now(),
+                )
+                summary.errors.append(f"fans mid {mid}: {error}")
+                self._log(
+                    "error", "snapshot.fan_failed",
+                    stat_date=stat_date, mid=mid, error=error,
+                )
+
+        summary.completed = summary.failed == 0 and summary.fans_failed == 0
+        self.repo.kv_set(self.completed_key(stat_date), "1" if summary.completed else "0")
+        self.repo.kv_set("snapshot:last_attempt", stat_date)
+        if summary.completed:
+            self.repo.kv_set("snapshot:last_completed", stat_date)
+        elif self.repo.kv_get("snapshot:last_completed") == stat_date:
+            self.repo.kv_set("snapshot:last_completed", "")
+
+        try:
+            path = backup_daily(
+                self.repo.db,
+                cfg.storage.backup_dir,
+                stat_date,
+                logger=self.logger,
+            )
+            prune_daily_backups(
+                cfg.storage.backup_dir,
+                keep_days=cfg.storage.backup_keep_days,
+            )
+            summary.backup_path = str(path)
+        except Exception as exc:  # noqa: BLE001  备份失败不推翻已采集数据
+            summary.backup_error = str(exc)
+            self._log("error", "backup.failed", error=str(exc), stat_date=stat_date)
+
+        summary.finished_at = self._now()
+        self._log(
+            "info" if summary.completed else "warning",
+            "snapshot.done",
+            **summary.as_dict(),
+        )
+        return summary
+
+    # ------------------------------------------------------------ internals
+
+    def _check_auth(self, cfg: AppConfig, now: int) -> tuple[bool, str]:
+        if not cfg.bilibili.cookie:
+            self.repo.kv_set("auth:last_check", str(now))
+            self.repo.kv_set("auth:ok", "0")
+            self.repo.kv_set("auth:message", "未配置 cookie")
+            return False, "未配置 cookie"
+        try:
+            state = self.client.check_login()
+        except BilibiliError as exc:
+            message = str(exc)
+            self.repo.kv_set("auth:last_check", str(now))
+            self.repo.kv_set("auth:ok", "0")
+            self.repo.kv_set("auth:message", message)
+            self._log("warning", "auth.invalid", message=message)
+            return False, message
+
+        self.repo.kv_set("auth:last_check", str(now))
+        self.repo.kv_set("auth:ok", "1" if state.is_login else "0")
+        self.repo.kv_set("auth:message", state.message)
+        if state.mid is not None:
+            self.repo.kv_set("auth:mid", str(state.mid))
+        if not state.is_login:
+            self._log(
+                "warning", "auth.invalid",
+                code=state.code, message=state.message,
+            )
+        return state.is_login, state.message
+
+    def _fetch_view(self, aid: int):
+        last_error = ""
+        for attempt in range(1, self.retries + 1):
+            try:
+                return self.client.view(aid), None, False
+            except BilibiliAPIError as exc:
+                last_error = str(exc)
+                if exc.code in VIDEO_UNAVAILABLE_CODES:
+                    return None, last_error, True
+            except BilibiliHTTPError as exc:
+                last_error = str(exc)
+                if exc.status == 404:
+                    return None, last_error, True
+            except BilibiliError as exc:
+                last_error = str(exc)
+            if attempt < self.retries:
+                self._sleep(self.backoff * (2 ** (attempt - 1)))
+        return None, last_error or "未知错误", False
+
+    def _fetch_fan(self, mid: int):
+        last_error = ""
+        for attempt in range(1, self.retries + 1):
+            try:
+                return self.client.relation_stat(mid), None
+            except BilibiliError as exc:
+                last_error = str(exc)
+            if attempt < self.retries:
+                self._sleep(self.backoff * (2 ** (attempt - 1)))
+        return None, last_error or "未知错误"

reaction_board/timeutil.py

@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+"""上海时区与每日任务时间计算。
+
+B 站数据口径使用 ``Asia/Shanghai``。中国自 1991 年起不再使用夏令时，因此这里
+用固定 UTC+8，避免 Windows 上依赖未安装的 ``tzdata`` 包。
+"""
+
+from __future__ import annotations
+
+import re
+import time
+from datetime import datetime, timedelta, timezone
+
+SHANGHAI_TZ = timezone(timedelta(hours=8))
+_HHMM_RE = re.compile(r"^([01]\d|2[0-3]):([0-5]\d)$")
+_DATE_RE = re.compile(r"^\d{4}-\d{2}-\d{2}$")
+
+
+def shanghai_datetime(ts: float | None = None) -> datetime:
+    return datetime.fromtimestamp(time.time() if ts is None else ts, SHANGHAI_TZ)
+
+
+def shanghai_date(ts: float | None = None) -> str:
+    return shanghai_datetime(ts).strftime("%Y-%m-%d")
+
+
+def parse_hhmm(value: str) -> tuple[int, int]:
+    match = _HHMM_RE.match(value or "")
+    if not match:
+        raise ValueError(f"时间必须是 HH:MM（24 小时制）: {value!r}")
+    return int(match.group(1)), int(match.group(2))
+
+
+def next_daily_run(now: float, hhmm: str) -> float:
+    """返回 ``now`` 之后（严格大于）最近的 ``hh:mm`` 上海时间时间戳。"""
+    hour, minute = parse_hhmm(hhmm)
+    current = shanghai_datetime(now)
+    target = current.replace(hour=hour, minute=minute, second=0, microsecond=0)
+    if target.timestamp() <= now:
+        target += timedelta(days=1)
+    return target.timestamp()
+
+
+def is_date(value: str) -> bool:
+    if not _DATE_RE.match(value or ""):
+        return False
+    try:
+        datetime.strptime(value, "%Y-%m-%d")
+    except ValueError:
+        return False
+    return True
+
+
+def day_bounds(date: str) -> tuple[float, float]:
+    """返回上海时区某一天的 [start, end) 时间戳。"""
+    if not is_date(date):
+        raise ValueError(f"日期格式必须是 YYYY-MM-DD: {date!r}")
+    start = datetime.strptime(date, "%Y-%m-%d").replace(tzinfo=SHANGHAI_TZ)
+    return start.timestamp(), (start + timedelta(days=1)).timestamp()

tests/fixtures.py

@@ -161,3 +161,108 @@ def info_for(
         f"bilibili://music/playlist/playpage/3728825651?page_type=3&oid={aid}&otype=2"
     )
     return item
+
+
+# GET x/web-interface/view?aid=117530286889638（真实七项 stat）
+VIEW_PAYLOAD: dict[str, Any] = {
+    "code": 0,
+    "message": "0",
+    "ttl": 1,
+    "data": {
+        "aid": 117530286889638,
+        "bvid": "BV1xvxi6LEZD",
+        "cid": 43184885058,
+        "title": "【咻咻满充电专场①】百变音色机能怪，还有什么风格是你驾驭不了的？！",
+        "pubdate": 1793370433,
+        "ctime": 1793370433,
+        "duration": 9504,
+        "owner": {"mid": 434442072, "name": "_-抱抱-_", "face": ""},
+        "stat": {
+            "aid": 117530286889638,
+            "view": 819,
+            "danmaku": 7,
+            "reply": 16,
+            "favorite": 43,
+            "coin": 9,
+            "share": 1,
+            "now_rank": 0,
+            "his_rank": 0,
+            "like": 44,
+            "dislike": 0,
+            "evaluation": "",
+            "vt": 0,
+        },
+    },
+}
+
+# 当前实测：收藏夹里已不可访问的 aid 返回 62012，而不是旧文档里的 -404
+VIEW_UNAVAILABLE: dict[str, Any] = {
+    "code": 62012,
+    "message": "62012",
+    "ttl": 1,
+    "data": None,
+}
+
+# GET x/relation/stat?vmid=37754047
+RELATION_PAYLOAD: dict[str, Any] = {
+    "code": 0,
+    "message": "0",
+    "ttl": 1,
+    "data": {
+        "mid": 37754047,
+        "following": 95,
+        "whisper": 0,
+        "black": 0,
+        "follower": 2767268,
+        "fans_medal_toast": None,
+        "fans_effect": None,
+    },
+}
+
+# GET x/web-interface/nav（已登录）
+NAV_PAYLOAD: dict[str, Any] = {
+    "code": 0,
+    "message": "0",
+    "ttl": 1,
+    "data": {
+        "isLogin": True,
+        "mid": 28802351,
+        "uname": "冷萃编译器",
+        "face": "https://i0.hdslb.com/bfs/face/example.jpg",
+        "level_info": {"current_level": 5},
+        "vipStatus": 0,
+        "wbi_img": {
+            "img_url": "https://i0.hdslb.com/bfs/wbi/example.png",
+            "sub_url": "https://i0.hdslb.com/bfs/wbi/example-sub.png",
+        },
+    },
+}
+
+
+def view_for(
+    aid: int,
+    *,
+    view: int = 819,
+    like: int = 44,
+    coin: int = 9,
+    favorite: int = 43,
+    share: int = 1,
+    reply: int = 16,
+    danmaku: int = 7,
+    bvid: str | None = None,
+) -> dict[str, Any]:
+    item = copy.deepcopy(VIEW_PAYLOAD)
+    data = item["data"]
+    data["aid"] = aid
+    data["bvid"] = bvid or f"BV{aid}"
+    data["stat"].update({
+        "aid": aid,
+        "view": view,
+        "like": like,
+        "coin": coin,
+        "favorite": favorite,
+        "share": share,
+        "reply": reply,
+        "danmaku": danmaku,
+    })
+    return item

tests/test_bilibili_client.py

@@ -25,8 +25,13 @@ from fixtures import (  # noqa: E402
     FOLDERS_PAYLOAD,
     IDS_PAYLOAD,
     INVALID_INFO,
+    NAV_PAYLOAD,
+    RELATION_PAYLOAD,
     VALID_INFO,
+    VIEW_PAYLOAD,
+    VIEW_UNAVAILABLE,
     info_for,
+    view_for,
 )
 
 
@@ -274,6 +279,88 @@ def test_timeout_and_method_forwarded():
     assert call["timeout"] == 30
 
 
+def test_view_seven_metrics():
+    transport = QueueTransport([http_json(VIEW_PAYLOAD)])
+    client, _ = make_client(transport)
+    stat = client.view(117530286889638)
+    assert stat.aid == 117530286889638
+    assert stat.bvid == "BV1xvxi6LEZD"
+    assert stat.metrics() == {
+        "view": 819, "like": 44, "favorite": 43, "coin": 9,
+        "share": 1, "reply": 16, "danmaku": 7,
+    }
+    assert "aid=117530286889638" in transport.calls[0]["url"]
+
+
+def test_view_unavailable_and_malformed():
+    transport = QueueTransport([
+        http_json(VIEW_UNAVAILABLE), http_json(VIEW_UNAVAILABLE),
+    ])
+    client, _ = make_client(transport)
+    try:
+        client.view(1)
+    except BilibiliAPIError as exc:
+        assert exc.code == 62012
+    else:
+        raise AssertionError("不可访问视频应抛业务错误")
+
+    payload = view_for(1)
+    payload["data"]["stat"].pop("coin")
+    bad = http_json(payload)
+    transport = QueueTransport([bad, bad])
+    client, _ = make_client(transport)
+    try:
+        client.view(1)
+    except BilibiliProtocolError as exc:
+        assert "coin" in str(exc)
+    else:
+        raise AssertionError("缺少 stat 字段应报协议错误")
+
+
+def test_relation_stat():
+    transport = QueueTransport([http_json(RELATION_PAYLOAD)])
+    client, _ = make_client(transport)
+    fan = client.relation_stat(37754047)
+    assert fan.mid == 37754047
+    assert fan.follower == 2767268
+    assert fan.following == 95
+    assert "vmid=37754047" in transport.calls[0]["url"]
+
+
+def test_check_login():
+    transport = QueueTransport([http_json(NAV_PAYLOAD)])
+    client, _ = make_client(transport)
+    state = client.check_login()
+    assert state.is_login is True
+    assert state.mid == 28802351
+    assert state.uname == "冷萃编译器"
+    assert "SESSDATA=secret" in transport.calls[0]["headers"]["cookie"]
+
+    transport = QueueTransport([http_json({
+        "code": 0, "message": "0", "ttl": 1,
+        "data": {"isLogin": False, "mid": 0, "uname": ""},
+    })])
+    client, _ = make_client(transport)
+    state = client.check_login()
+    assert state.is_login is False and state.mid == 0
+
+    transport = QueueTransport([http_json({"code": -101, "message": "账号未登录", "data": None})])
+    client, _ = make_client(transport)
+    state = client.check_login()
+    assert state.is_login is False
+    assert state.code == -101
+    assert "账号未登录" in state.message
+
+
+def test_check_login_without_cookie_makes_no_request():
+    transport = QueueTransport([])
+    client, _ = make_client(transport, cookie="")
+    state = client.check_login()
+    assert state.is_login is False
+    assert state.message == "未配置 cookie"
+    assert transport.calls == []
+
+
 def main():
     test_fav_ids_parse_and_anonymous_header()
     test_anonymous_failure_falls_back_to_full_cookie()
@@ -288,6 +375,11 @@ def main():
     test_fav_infos_chunk_size_validation()
     test_pacer_delays_after_first_request()
     test_timeout_and_method_forwarded()
+    test_view_seven_metrics()
+    test_view_unavailable_and_malformed()
+    test_relation_stat()
+    test_check_login()
+    test_check_login_without_cookie_makes_no_request()
     print("OK: B 站只读客户端契约与重试测试全部通过")
 
 

tests/test_cli.py

@@ -12,9 +12,11 @@ from pathlib import Path
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.stdout.reconfigure(encoding="utf-8")
 
+from reaction_board.bilibili.models import LoginState  # noqa: E402
 from reaction_board.cli import main  # noqa: E402
 from reaction_board.database import Database  # noqa: E402
 from reaction_board.repository import Repository  # noqa: E402
+import reaction_board.cli as cli  # noqa: E402
 
 
 def write_config(tmp, *, cookie="SESSDATA=x; buvid3=y", csrf="csrf"):
@@ -86,24 +88,61 @@ def test_sync_requires_auth_without_network():
         assert not (Path(tmp) / "app.db").exists()
 
 
-def test_run_once_without_folders():
+def test_snapshot_offline_empty_db():
+    with tempfile.TemporaryDirectory() as tmp:
+        path = write_config(tmp, cookie="", csrf="")
+        data = json.loads(path.read_text(encoding="utf-8"))
+        data["folders"] = []
+        data["track_fans"] = []
+        path.write_text(json.dumps(data, ensure_ascii=False), encoding="utf-8")
+        code, output = run_cli(["snapshot", "--config", str(path)])
+        assert code == 0
+        assert '"completed": true' in output
+        assert '"total": 0' in output
+        assert len(list((Path(tmp) / "backup").glob("app-*.db"))) == 1
+
+
+def test_auth_check_without_cookie():
+    with tempfile.TemporaryDirectory() as tmp:
+        path = write_config(tmp, cookie="", csrf="")
+        code, output = run_cli(["auth-check", "--config", str(path)])
+        assert code == 1
+        payload = json.loads(output)
+        assert payload["is_login"] is False
+        assert "未配置 cookie" in payload["message"]
+
+
+def test_run_once_offline():
+    class FakeClient:
+        def check_login(self):
+            return LoginState(True, 1, "tester", 0, "OK")
+
     with tempfile.TemporaryDirectory() as tmp:
         path = write_config(tmp)
         data = json.loads(path.read_text(encoding="utf-8"))
         data["folders"] = []
+        data["track_fans"] = []
         path.write_text(json.dumps(data, ensure_ascii=False), encoding="utf-8")
-        code, output = run_cli(["run", "--once", "--config", str(path)])
+
+        original = cli._client
+        cli._client = lambda *args, **kwargs: FakeClient()
+        try:
+            code, output = run_cli(["run", "--once", "--config", str(path)])
+        finally:
+            cli._client = original
         assert code == 0
         assert '"name": "folder_sync"' in output
-        assert '"ok": true' in output
+        assert '"name": "snapshot"' in output
 
 
 def main_test():
     test_init_and_status()
     test_missing_config()
     test_sync_requires_auth_without_network()
-    test_run_once_without_folders()
-    print("OK: CLI init/sync/run/status/错误路径测试全部通过")
+    test_snapshot_offline_empty_db()
+    test_auth_check_without_cookie()
+    test_run_once_offline()
+    print("OK: CLI init/sync/snapshot/auth-check/run/status/错误路径测试全部通过")
 
 
 if __name__ == "__main__":

tests/test_maintenance.py

@@ -0,0 +1,78 @@
+# -*- coding: utf-8 -*-
+"""每日备份与保留期测试: uv run python tests/test_maintenance.py"""
+
+import os
+import sqlite3
+import sys
+import tempfile
+from pathlib import Path
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.stdout.reconfigure(encoding="utf-8")
+
+from reaction_board.database import Database  # noqa: E402
+from reaction_board.services.maintenance import (  # noqa: E402
+    backup_daily,
+    daily_backup_path,
+    prune_daily_backups,
+)
+
+
+def test_daily_backup_and_restore():
+    with tempfile.TemporaryDirectory() as tmp:
+        db = Database(Path(tmp) / "app.db")
+        db.initialize()
+        try:
+            db.write(lambda c: c.execute("INSERT INTO kv(k, v) VALUES ('x', '42')"))
+            target = backup_daily(db, Path(tmp) / "backup", "2026-10-31")
+            assert target == daily_backup_path(Path(tmp) / "backup", "2026-10-31")
+            assert target.name == "app-20261031.db"
+            assert target.exists()
+
+            check = sqlite3.connect(target)
+            try:
+                assert check.execute("SELECT v FROM kv WHERE k='x'").fetchone()[0] == "42"
+            finally:
+                check.close()
+
+            # 覆盖同日备份也安全
+            db.write(lambda c: c.execute("UPDATE kv SET v='43' WHERE k='x'"))
+            backup_daily(db, Path(tmp) / "backup", "2026-10-31")
+            check = sqlite3.connect(target)
+            try:
+                assert check.execute("SELECT v FROM kv WHERE k='x'").fetchone()[0] == "43"
+            finally:
+                check.close()
+        finally:
+            db.close()
+
+
+def test_prune_daily_backups_only():
+    with tempfile.TemporaryDirectory() as tmp:
+        backup_dir = Path(tmp)
+        old_daily = backup_dir / "app-20260101.db"
+        fresh_daily = backup_dir / "app-20261031.db"
+        old_migration = backup_dir / "app-pre-v1-20260101.db"
+        other = backup_dir / "keep.txt"
+        for path in (old_daily, fresh_daily, old_migration, other):
+            path.write_bytes(b"x")
+        now = 1_800_000_000
+        old_time = now - 20 * 86400
+        for path in (old_daily, old_migration):
+            os.utime(path, (old_time, old_time))
+        os.utime(fresh_daily, (now, now))
+        removed = prune_daily_backups(backup_dir, keep_days=14, now=now)
+        assert removed == [old_daily]
+        assert fresh_daily.exists()
+        assert old_migration.exists()  # 迁移备份不属于日备份清理范围
+        assert other.exists()
+
+
+def main():
+    test_daily_backup_and_restore()
+    test_prune_daily_backups_only()
+    print("OK: 每日备份与保留期测试全部通过")
+
+
+if __name__ == "__main__":
+    main()

tests/test_scheduler.py

@@ -110,8 +110,27 @@ def test_max_iterations_and_validation():
             raise AssertionError(f"应当失败: {tasks}, {kwargs}")
 
 
+def test_next_run_fn_controls_reschedule():
+    clock = [1_000.0]
+    calls = []
+    task = ScheduledTask(
+        "daily", 86400, lambda: calls.append(clock[0]),
+        next_run_fn=lambda started: started + 123,
+    )
+    scheduler = Scheduler([task], clock=lambda: clock[0])
+    scheduler.run_due()
+    assert calls == [1_000.0]
+    assert task.next_run == 1_123.0
+    clock[0] = 1_122.0
+    assert scheduler.run_due() == []
+    clock[0] = 1_123.0
+    scheduler.run_due()
+    assert calls == [1_000.0, 1_123.0]
+
+
 def main():
     test_run_when_due_and_reschedule()
+    test_next_run_fn_controls_reschedule()
     test_task_error_does_not_block_other_tasks()
     test_run_forever_with_stop_event()
     test_max_iterations_and_validation()

tests/test_snapshot.py

@@ -0,0 +1,331 @@
+# -*- coding: utf-8 -*-
+"""每日快照与粉丝采集测试（transport 边界 Mock，不联网）:
+uv run python tests/test_snapshot.py
+"""
+
+import io
+import json
+import os
+import sys
+import tempfile
+import urllib.parse
+from pathlib import Path
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.stdout.reconfigure(encoding="utf-8")
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from fixtures import (  # noqa: E402
+    NAV_PAYLOAD,
+    RELATION_PAYLOAD,
+    VIEW_UNAVAILABLE,
+    view_for,
+)
+from reaction_board.bilibili.client import (  # noqa: E402
+    BilibiliClient,
+    HTTPResponse,
+    Pacer,
+)
+from reaction_board.bilibili.models import FavResource  # noqa: E402
+from reaction_board.config import ConfigStore, FolderConfig  # noqa: E402
+from reaction_board.database import Database  # noqa: E402
+from reaction_board.logging_json import JsonLogger  # noqa: E402
+from reaction_board.repository import Repository  # noqa: E402
+from reaction_board.services.snapshot import SnapshotService  # noqa: E402
+
+DATE = "2026-10-31"
+FOLDER = FolderConfig(year=2026, media_id=3700023351, title="2026")
+
+
+def http_json(payload):
+    return HTTPResponse(
+        200, {"content-type": "application/json"},
+        json.dumps(payload, ensure_ascii=False).encode("utf-8"),
+    )
+
+
+class SnapshotTransport:
+    def __init__(self, views, *, nav=None, fan=None):
+        self.views = views
+        self.nav = NAV_PAYLOAD if nav is None else nav
+        self.fan = RELATION_PAYLOAD if fan is None else fan
+        self.calls = []
+
+    def request(self, method, url, headers, data=None, timeout=30):
+        self.calls.append(url)
+        if "/x/web-interface/nav" in url:
+            return http_json(self.nav)
+        if "/x/web-interface/view" in url:
+            aid = int(urllib.parse.parse_qs(
+                urllib.parse.urlparse(url).query
+            )["aid"][0])
+            payload = self.views[aid]
+            if isinstance(payload, HTTPResponse):
+                return payload
+            return http_json(payload)
+        if "/x/relation/stat" in url:
+            return http_json(self.fan)
+        raise AssertionError(f"未预期的 URL: {url}")
+
+    def count(self, part):
+        return sum(1 for url in self.calls if part in url)
+
+
+def make_service(tmp, transport, *, track_fans=(37754047,), logger=None,
+                 retries=3, cookie="SESSDATA=secret; buvid3=device"):
+    path = Path(tmp) / "config.json"
+    path.write_text(json.dumps({
+        "mid": 28802351,
+        "csrf": "csrf",
+        "cookie": cookie,
+        "storage": {
+            "database_path": str(Path(tmp) / "app.db"),
+            "backup_dir": str(Path(tmp) / "backup"),
+            "backup_keep_days": 14,
+        },
+        "folders": [],
+        "track_fans": list(track_fans),
+    }, ensure_ascii=False), encoding="utf-8")
+    store = ConfigStore(path, env={}, require_auth=False)
+    db = Database(Path(tmp) / "app.db", backup_dir=Path(tmp) / "backup")
+    db.initialize()
+    repo = Repository(db, clock=lambda: 1_800_000_000)
+    repo.ensure_folder(FOLDER)
+    client = BilibiliClient(
+        cookie=cookie,
+        csrf="csrf",
+        mid=28802351,
+        transport=transport,
+        pacer=Pacer(0, 0),
+        retries=1,
+    )
+    service = SnapshotService(
+        store, repo, client,
+        clock=lambda: 1_800_000_000,
+        sleeper=lambda seconds: None,
+        logger=logger,
+        retries=retries,
+        backoff=0,
+    )
+    return db, repo, service
+
+
+def add_video(repo, aid, *, status="active"):
+    repo.upsert_from_fav(
+        FavResource(
+            aid=aid, bvid=f"BV{aid}", title=f"视频{aid}", up_mid=100,
+            up_name="UP", pubdate=1_700_000_000, duration=600,
+            cover=None, attr=0, fav_time=None,
+        ),
+        FOLDER.media_id,
+        was_added=True,
+    )
+    if status != "active":
+        repo.set_video_status(aid, status)
+
+
+def test_snapshot_success_resume_and_force():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({
+            1: view_for(1, view=100, like=10, coin=2, favorite=3,
+                        share=1, reply=4, danmaku=5),
+            2: view_for(2, view=200, like=20, coin=4, favorite=6,
+                        share=2, reply=8, danmaku=10),
+        })
+        db, repo, service = make_service(tmp, transport)
+        try:
+            add_video(repo, 1)
+            add_video(repo, 2)
+            result = service.run(date=DATE)
+            assert result.completed is True
+            assert result.total == 2
+            assert result.success == 2
+            assert result.failed == 0
+            assert result.fans_ok == 1
+            assert result.fans_failed == 0
+            assert result.auth_ok is True
+            assert Path(result.backup_path or "").exists()
+
+            row = repo.get_snapshot(DATE, 1)
+            assert (row["view"], row["like"], row["favorite"], row["coin"],
+                    row["share"], row["reply"], row["danmaku"]) == (100, 10, 3, 2, 1, 4, 5)
+            assert row["ok"] == 1 and row["src"] == "view"
+            fan = repo.get_up_stat(DATE, 37754047)
+            assert fan["follower"] == 2767268 and fan["ok"] == 1
+            assert repo.kv_get(service.completed_key(DATE)) == "1"
+            assert repo.kv_get("snapshot:last_completed") == DATE
+            assert repo.snapshot_counts(DATE) == {"total": 2, "ok": 2, "failed": 0}
+
+            # 已完成 -> 不再请求
+            view_before = transport.count("/web-interface/view")
+            again = service.run_if_needed(date=DATE)
+            assert again.already_completed is True
+            assert transport.count("/web-interface/view") == view_before
+
+            # force 重新采集
+            forced = service.run(date=DATE, force=True)
+            assert forced.success == 2
+            assert transport.count("/web-interface/view") == view_before + 2
+        finally:
+            db.close()
+
+
+def test_resume_skips_ok_and_retries_failed():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({
+            1: view_for(1, view=111),
+            2: view_for(2, view=222),
+        })
+        db, repo, service = make_service(tmp, transport)
+        try:
+            add_video(repo, 1)
+            add_video(repo, 2)
+            repo.upsert_snapshot(
+                DATE, 1, metrics={"view": 1, "like": 1, "favorite": 1,
+                                  "coin": 1, "share": 1, "reply": 1, "danmaku": 1},
+                ok=True, err=None, captured_at=1,
+            )
+            repo.upsert_snapshot(
+                DATE, 2, metrics=None, ok=False, err="previous error",
+                captured_at=1,
+            )
+            result = service.run(date=DATE)
+            assert result.skipped == 1
+            assert result.success == 1
+            assert result.completed is True
+            assert transport.count("/web-interface/view") == 1
+            assert repo.get_snapshot(DATE, 1)["view"] == 1  # 未被覆盖
+            assert repo.get_snapshot(DATE, 2)["view"] == 222
+        finally:
+            db.close()
+
+
+def test_unavailable_marks_removed():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({
+            1: VIEW_UNAVAILABLE,
+            2: HTTPResponse(404, {}, b"not found"),
+        })
+        db, repo, service = make_service(tmp, transport, track_fans=())
+        try:
+            add_video(repo, 1)
+            add_video(repo, 2)
+            result = service.run(date=DATE)
+            assert result.removed == 2
+            assert result.failed == 0
+            assert result.completed is True
+            assert repo.get_video(1)["status"] == "removed"
+            assert repo.get_video(2)["status"] == "removed"
+            assert repo.get_snapshot(DATE, 1) is None
+            assert repo.get_snapshot(DATE, 2) is None
+        finally:
+            db.close()
+
+
+def test_other_error_writes_failed_placeholder():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({
+            1: {"code": -500, "message": "服务异常", "data": None},
+        })
+        db, repo, service = make_service(tmp, transport, track_fans=(), retries=3)
+        try:
+            add_video(repo, 1)
+            result = service.run(date=DATE)
+            assert result.failed == 1
+            assert result.success == 0
+            assert result.completed is False
+            row = repo.get_snapshot(DATE, 1)
+            assert row["ok"] == 0
+            assert row["view"] is None and row["like"] is None
+            assert "code=-500" in row["err"]
+            assert repo.kv_get(service.completed_key(DATE)) == "0"
+            # 每次业务失败会走匿名+完整 Cookie 两条请求，服务层重试 3 次
+            assert transport.count("/web-interface/view") == 6
+        finally:
+            db.close()
+
+
+def test_fan_failure_placeholder():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({}, fan={"code": -500, "message": "x", "data": None})
+        db, repo, service = make_service(tmp, transport, retries=2)
+        try:
+            result = service.run(date=DATE)
+            assert result.total == 0
+            assert result.fans_failed == 1
+            assert result.completed is False
+            row = repo.get_up_stat(DATE, 37754047)
+            assert row["ok"] == 0
+            assert row["follower"] is None and row["following"] is None
+        finally:
+            db.close()
+
+
+def test_auth_invalid_is_warned_but_snapshot_continues():
+    with tempfile.TemporaryDirectory() as tmp:
+        stream = io.StringIO()
+        logger = JsonLogger(stream)
+        transport = SnapshotTransport(
+            {}, nav={"code": 0, "message": "0", "ttl": 1,
+                     "data": {"isLogin": False, "mid": 0, "uname": ""}},
+            fan=RELATION_PAYLOAD,
+        )
+        db, repo, service = make_service(tmp, transport, logger=logger)
+        try:
+            result = service.run(date=DATE)
+            assert result.auth_ok is False
+            assert result.completed is True
+            assert repo.kv_get("auth:ok") == "0"
+            events = [json.loads(line) for line in stream.getvalue().splitlines()]
+            assert any(e["event"] == "auth.invalid" for e in events)
+        finally:
+            db.close()
+
+
+def test_no_cookie_skips_nav_request():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({}, fan=RELATION_PAYLOAD)
+        db, repo, service = make_service(tmp, transport, cookie="")
+        try:
+            result = service.run(date=DATE)
+            assert result.auth_ok is False
+            assert result.auth_message == "未配置 cookie"
+            assert transport.count("/web-interface/nav") == 0
+        finally:
+            db.close()
+
+
+def test_force_failure_clears_last_completed():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = SnapshotTransport({1: view_for(1, view=100)})
+        db, repo, service = make_service(tmp, transport, track_fans=(), retries=1)
+        try:
+            add_video(repo, 1)
+            first = service.run(date=DATE)
+            assert first.completed is True
+            assert repo.kv_get("snapshot:last_completed") == DATE
+
+            transport.views[1] = {"code": -500, "message": "x", "data": None}
+            second = service.run(date=DATE, force=True)
+            assert second.failed == 1
+            assert second.completed is False
+            assert repo.kv_get("snapshot:last_completed") == ""
+            assert repo.get_snapshot(DATE, 1)["ok"] == 0
+        finally:
+            db.close()
+
+
+def main():
+    test_snapshot_success_resume_and_force()
+    test_resume_skips_ok_and_retries_failed()
+    test_unavailable_marks_removed()
+    test_other_error_writes_failed_placeholder()
+    test_fan_failure_placeholder()
+    test_auth_invalid_is_warned_but_snapshot_continues()
+    test_no_cookie_skips_nav_request()
+    test_force_failure_clears_last_completed()
+    print("OK: 每日快照、断点续跑、失败占位与粉丝采集测试全部通过")
+
+
+if __name__ == "__main__":
+    main()

tests/test_timeutil.py

@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+"""上海时区与每日时间计算测试: uv run python tests/test_timeutil.py"""
+
+import os
+import sys
+from datetime import datetime
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.stdout.reconfigure(encoding="utf-8")
+
+from reaction_board.timeutil import (  # noqa: E402
+    SHANGHAI_TZ,
+    day_bounds,
+    is_date,
+    next_daily_run,
+    parse_hhmm,
+    shanghai_date,
+    shanghai_datetime,
+)
+
+
+def ts(text):
+    return datetime.strptime(text, "%Y-%m-%d %H:%M:%S").replace(tzinfo=SHANGHAI_TZ).timestamp()
+
+
+def test_shanghai_date_boundary():
+    # UTC 2026-10-31 15:59:59 = 上海 2026-10-31 23:59:59
+    assert shanghai_date(ts("2026-10-31 23:59:59")) == "2026-10-31"
+    # UTC 2026-10-31 16:00:00 = 上海 2026-11-01 00:00:00
+    assert shanghai_date(ts("2026-11-01 00:00:00")) == "2026-11-01"
+    assert shanghai_datetime().tzinfo is not None
+
+
+def test_parse_hhmm():
+    assert parse_hhmm("00:01") == (0, 1)
+    assert parse_hhmm("23:59") == (23, 59)
+    for bad in ("24:00", "1:01", "00:60", "", "abc"):
+        try:
+            parse_hhmm(bad)
+        except ValueError:
+            pass
+        else:
+            raise AssertionError(f"{bad!r} 应失败")
+
+
+def test_next_daily_run():
+    # 当天 00:01 之前 -> 当天 00:01
+    now = ts("2026-11-01 00:00:10")
+    nxt = next_daily_run(now, "00:01")
+    assert nxt == ts("2026-11-01 00:01:00")
+    # 正好 00:01:00 -> 下一天（严格大于）
+    assert next_daily_run(ts("2026-11-01 00:01:00"), "00:01") == ts("2026-11-02 00:01:00")
+    # 当天 00:01 之后 -> 次日
+    assert next_daily_run(ts("2026-11-01 23:59:59"), "00:01") == ts("2026-11-02 00:01:00")
+    # 跨月
+    assert next_daily_run(ts("2026-10-31 12:00:00"), "00:01") == ts("2026-11-01 00:01:00")
+
+
+def test_day_bounds_and_date_validation():
+    start, end = day_bounds("2026-11-01")
+    assert start == ts("2026-11-01 00:00:00")
+    assert end == ts("2026-11-02 00:00:00")
+    assert end - start == 86400
+    assert is_date("2026-11-01")
+    for bad in ("2026-13-01", "2026-02-30", "2026/11/01", "20261101", ""):
+        assert not is_date(bad), bad
+    try:
+        day_bounds("bad")
+    except ValueError:
+        pass
+    else:
+        raise AssertionError("非法日期应失败")
+
+
+def main():
+    test_shanghai_date_boundary()
+    test_parse_hhmm()
+    test_next_daily_run()
+    test_day_bounds_and_date_validation()
+    print("OK: 上海时区与每日时间计算测试全部通过")
+
+
+if __name__ == "__main__":
+    main()