[Root Cause] storage (auto-maintained, do not close manually) | [根因] storage（自动维护，勿手动关闭） #6393

同一根本原因（storage）的 open issue 汇聚，由根因归类板自动维护（10min 刷新，勿手编）。

本批 issue

• 镜像 [bug] UNRECOGNIZED PATHS flags non-POST requests to known endpoints (/responses, /) as "not a known protocol", and the c | [bug] UNRECOGNIZED PATHS 把非 POST 请求打到已知端点（/responses、/）判成 "not a known protocol"，且计数永不清零——4 次探活常驻面板 6 天 #5763（GitHub storage: notice-store (#5548) pre-hydration receipts block the one-time legacy→kv migration #5761） — storage: notice-store (Unified Announcement Panel Design (Approved): Built-in declarations + local JSON + remote GitHub raw — a single renderer | 公告面统一设计（已批准）：内置声明 + 本地 JSON + 远程 GitHub raw，三来源一套渲染器 #5548) pre-hydra…
  根因: src/notice-store.ts hydrateNoticeReceipts() gates on cache!==null as its hydrat…
• 镜像 [PR] Pi: opt-in structured acp_delegate notification envelope for third-party UIs #5790（GitHub [storage] Persist a schema reader floor so an older build refuses a store it cannot share (rolling upgrades / rollbacks) #5788） — [storage] Persist a schema reader floor…
  根因: feature request: whether an OLDER build may open a store a NEWER build migrated…
• 镜像 [Feature][Pi] Automatic per-role model fallback for acp_delegate #5827（GitHub Expected performance after JSON-to-SQLite migration #5824） — Expected performance after JSON-to-SQLi…
  根因: performance question on the JSON->SQLite storage migration: private candidate m…
• 镜像 Batch compression failed: insufficient output for individual paragraphs. | 批量压缩个别自然段输出过少失败 #5894（GitHub [Feature | 功能请求] 会话索引重建命令 / bili reindex: rebuild one session's index #5892） — [Feature | 功能请求] 会话索引重建命令 / bili reinde…
  根因: feature request: CLI and/or Web-console command to rebuild one session's index.…
• 镜像 [Bug][dsh] dsh-ledger treats the peer suffix after the version in pnpm lockfile as part of the version: healthy profiles | [Bug][dsh] dsh-ledger 把 pnpm lockfile 里版本后面的 peer 后缀当成版本的一部分：健康的 profile 被报 copy-vs-lock，bili doctor --fix 还会改写 lockfile #6320（GitHub [Bug][storage] Stale entries remain in archive.jsonl after a failed archive sweep; subsequent restore picks up the stale | [Bug][storage] 归档清扫失败后 archive.jsonl 留下过期行；之后恢复会拿回过期的导出、丢掉较新的那份 #6317） — [Bug][storage] Stale entries remain in …
  根因: archiveSession appends the session's export row to archive.jsonl BEFORE running…
• 镜像 [storage] The newly created index.db actually ends up with auto_vacuum=0: this pragma is placed after journal_mode=WAL, | [storage] 新建的 index.db 实际是 auto_vacuum=0：这条 pragma 排在 journal_mode=WAL 之后，--vacuum incremental 什么都回收不了 #6323（GitHub [storage] The newly created index.db actually ends up with auto_vacuum=0: this pragma is placed after journal_mode=WAL, | [storage] 新建的 index.db 实际是 auto_vacuum=0：这条 pragma 排在 journal_mode=WAL 之后，--vacuum incremental 什么都回收不了 #6323） — [storage] The newly created index.db ac…
  根因: storagePragmas() in src/storage/schema.ts sets PRAGMA journal_mode=WAL first an…

任务

对本批 issue 做一个根本性修复 PR：

• PR 描述里用 Fixes #... 逐个列出上面每一个 GitHub issue 号（没有 GitHub 号的写镜像号）
• 若某个 issue 已有自己的 PR 且方向一致，cherry-pick 其 commit 并保留原作者署名（-x）；由你判断是否值得
• 标签按本 PR 的 diff 独立判断（类别 + 优先级），不要抄任何来源 issue
• 修完后回帖本线程：改了什么、为什么一次修了整批