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/contracts/test/reasons.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { looksLikeCode, reasonSentence, reasonText } from "../src/reasons.ts";
+import { looksLikeCode, matchGapText, matchGapTexts, reasonSentence, reasonText } from "../src/reasons.ts";
 
 describe("reasonText(DEAI-2 原因码人话化)", () => {
   it("裸码、blocked:多码、带后缀的码都能翻译", () => {
@@ -24,3 +24,21 @@ describe("reasonText(DEAI-2 原因码人话化)", () => {
     expect(looksLikeCode("Connection refused")).toBe(false);
   });
 });
+
+describe("matchGapText(POLISH-1 入库版本差距)", () => {
+  it("带参数的码转成短句", () => {
+    expect(matchGapText("version_resolution:2160p")).toBe("可换成 2160p");
+    expect(matchGapText("version_hdr")).toBe("缺 HDR 版本");
+    expect(matchGapText("version_hdr:DV")).toBe("缺 DV 版本");
+    expect(matchGapText("version_source:REMUX")).toBe("可换成 Remux");
+    expect(matchGapText("version_subtitles:zh-Hans")).toBe("缺简中字幕");
+    expect(matchGapText("version_subtitles:chs")).toBe("缺 chs 字幕");
+  });
+
+  it("不认识的码返回 null;列表去重", () => {
+    expect(matchGapText("nope")).toBeNull();
+    expect(matchGapTexts(["version_resolution:2160p", "version_resolution_upgrade:2160p", "nope"])).toEqual([
+      "可换成 2160p",
+    ]);
+  });
+});