feat(web): merge search filters into one row and tidy episode versions (POLISH-1)

- H&R becomes a quick-filter facet (yes/no/unknown, with counts) on search
  results and the site resources tab; drop the old free/H&R selects, keep
  size range and sort on the same row (mobile: drawer), single clear button
- legacy free/hr URL params migrate into quick filters; stored selections
  keep the same localStorage key
- search timing and query terms move into TechInfo
- library episode versions: click the whole row to expand, versions listed
  as sibling rows, details only under the selected version, raw values in
  TechInfo
- slot comparison gaps get reason codes (matchGapText in contracts
  reasons.ts): "可换成 2160p", "缺 HDR 版本"

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

packages/domain/test/release-facets.test.ts

@@ -100,6 +100,19 @@ describe("release-facets", () => {
     expect(ids(run({ promotion: ["2x"] }))).toEqual(["4"]);
   });
 
+  it("H&R 三态分面:缺省按未知;未知档只在有资源时列出", () => {
+    const hrItems = [mk("y", { hr: true }), mk("n", { hr: false }), mk("n2", { hr: false }), mk("u")];
+    const r = applyFacets(hrItems, (x) => x, {}, { now: NOW });
+    expect(r.facets.hr).toEqual([
+      { value: "yes", label: "有", count: 1 },
+      { value: "no", label: "无", count: 2 },
+      { value: "unknown", label: "未知", count: 1 },
+    ]);
+    expect(ids(applyFacets(hrItems, (x) => x, { hr: ["no", "unknown"] }, { now: NOW }))).toEqual(["n", "n2", "u"]);
+    const known = applyFacets([mk("y", { hr: true })], (x) => x, {}, { now: NOW });
+    expect(known.facets.hr.map((o) => o.value)).toEqual(["yes", "no"]);
+  });
+
   it("已选但没有结果的值仍列出(计数 0)", () => {
     const r = run({ releaseGroup: ["NoSuch"], site: ["zzz"] });
     expect(r.items).toEqual([]);