feat(files): W5-A2 move/copy via planImport, organize overrides, delete records, download

- /files/move|copy go through planImport's new `transfer` variant (keep names, directory
  expanded to per-file plan) → organization_record + verifyAndImport/executeRecord: per-file
  ledger resumable, fsproxy, cross-volume directory move = per-file copy→verify→delete then
  remove empty source dirs; shared plan store + plan_stale; asset_location follows per file,
  path_binding revised when a whole directory moved (finalizeTransfer); request waits up to
  FILES_TRANSFER_WAIT_SEC, else executed.pending
- /files/organize per-item overrides take effect: season/episodes (domain planOrganize
  overrides), contentUnitId coverage, targetDir (no binding), operation, slotId (satisfied
  after verify); warnings only for inapplicable overrides
- delete/trash/restore write organization_record (action trash|delete|restore, file-level
  results; migration 0026)
- GET /files/download (admin session, nfo/subtitle/image, size cap, streamed, audited)
- GET /files/records?ids|planIds for the organize page
- fs race errors map to 503/404/403/400 instead of 500
- runbook updated

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/domain/test/organize.test.ts

@@ -270,6 +270,44 @@ describe("W4-E4:字幕 .default 与 latest 旧版本判定口径(对照 MP)", ()
     expect(subs.some((n) => n?.endsWith(".eng.srt"))).toBe(true);
   });
 
+  it("逐文件季/集覆写:优先于文件名解析,目录前缀对其下文件生效,电影忽略", () => {
+    const D = "/dl/Weird.Name";
+    const plan = planOrganize({
+      operation: "copy",
+      mediaType: "tv",
+      sourceRoot: D,
+      files: [
+        { path: `${D}/weird-a.mkv`, size: GiB },
+        { path: `${D}/weird-a.chs.srt`, size: 1000 },
+        { path: `${D}/Show.S01E05.mkv`, size: GiB },
+        { path: `${D}/sub/Show.S01E07.mkv`, size: GiB },
+      ],
+      entity: { title: "剧", year: 2020 },
+      target: { seasonDirs: { 1: "/lib/剧/Season 1", 2: "/lib/剧/Season 2" } },
+      overrides: {
+        [`${D}/weird-a.mkv`]: { season: 2, episodes: { start: 3, end: 4 } },
+        [`${D}/Show.S01E05.mkv`]: { episodes: { start: 6, end: 6 } },
+        [`${D}/sub`]: { season: 2 },
+      },
+    });
+    expect(plan.files.map((f) => f.dst)).toEqual([
+      "/lib/剧/Season 2/剧 - S02E03-E04.mkv",
+      "/lib/剧/Season 1/剧 - S01E06.mkv",
+      "/lib/剧/Season 2/剧 - S02E07.mkv",
+      "/lib/剧/Season 2/剧 - S02E03-E04.chi.zh-cn.srt",
+    ]);
+    expect(plan.files[0]).toMatchObject({ season: 2, episodes: { start: 3, end: 4 } });
+    const movie = planOrganize({
+      operation: "copy",
+      mediaType: "movie",
+      files: [{ path: "/dl/M.2020.mkv", size: GiB }],
+      entity: { title: "M", year: 2020 },
+      target: { movieDir: "/lib/M (2020)" },
+      overrides: { "/dl/M.2020.mkv": { season: 3 } },
+    });
+    expect(movie.files[0]!.dst).toBe("/lib/M (2020)/M (2020).mkv");
+  });
+
   it("findOtherVersions:同季同集同 Part、只看视频扩展名", () => {
     const sib = [
       "/lib/S01/Show - S01E01 - 1080p.mkv",