feat(集数映射): 作品季集结构字段(迁移 0075)、剧集组接口契约与按 TMDB 默认季集换算

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

packages/domain/test/episode-resolution.test.ts

@@ -280,3 +280,39 @@ describe("resolveEpisodes 规则", () => {
     expect(r).toMatchObject({ method: "unresolved", ruleFailed: "x" });
   });
 });
+
+describe("resolveEpisodes 剧集组:按 TMDB 默认季集换算", () => {
+  // TMDB 默认 S1 共 25 集;剧集组拆成 S1(1–12)、S2(13–25)
+  const grouped: SeasonTable = {
+    ...table([12, 13]),
+    origins: Array.from({ length: 25 }, (_, k) => ({
+      tmdbSeason: 1,
+      tmdbEpisode: k + 1,
+      season: k < 12 ? 1 : 2,
+      episode: k < 12 ? k + 1 : k - 11,
+    })),
+  };
+
+  it("S01E14(按 TMDB 默认季编号)→ 组内 S02E02", () => {
+    const r = run({ season: 1, episodes: ep(14) }, grouped);
+    expect(r).toMatchObject({ method: "tmdb_season", canonical: { season: 2, episodes: ep(2) } });
+    expect(r.evidence).toContain("tmdb_season:S01E14");
+  });
+
+  it("「- 13」季号推定:跨季绝对集号与默认季对照同解,归第 2 季第 1 集", () => {
+    const r = run({ season: 1, seasonInferred: true, episodes: ep(13) }, grouped);
+    expect(r.canonical).toEqual({ season: 2, episodes: ep(1) });
+    expect(["absolute_cross_season", "tmdb_season"]).toContain(r.method);
+  });
+
+  it("区间跨组不换;组内号本身对得上时原号优先", () => {
+    expect(run({ season: 1, episodes: ep(12, 13) }, grouped).method).toBe("unresolved");
+    expect(run({ season: 2, episodes: ep(3) }, grouped)).toMatchObject({ method: "raw" });
+    expect(run({ season: 1, episodes: ep(14, 15) }, grouped).canonical).toEqual({ season: 2, episodes: ep(2, 3) });
+  });
+
+  it("没有 origins(默认季结构)时不出这种换算", () => {
+    const { origins: _o, ...plain } = grouped;
+    expect(run({ season: 1, episodes: ep(14) }, plain).method).toBe("unresolved");
+  });
+});