feat: pipeline templates, analytics opt-out, 83 conversion presets, positioning + e2e modernization

Lands five integrated branches: pipeline templates (#355), analytics opt-out (#354), 83 conversion presets bringing the catalog to 240 tools (#356), self-hosted positioning (#353), and e2e modernization (#351).

Integration fixes: aligned stale web analytics tests with the opt-out/allow-list model, closed 3 CodeQL incomplete-sanitization alerts in the i18n generator, resolved settings/index/docs/format-matrix conflicts, and corrected tool counts to 240.

tests/unit/shared/search-aliases.test.ts

@@ -0,0 +1,53 @@
+import { describe, expect, it } from "vitest";
+import {
+  generateConversionKeywords,
+  normalizeSearchQuery,
+} from "../../../packages/shared/src/search/format-aliases.js";
+
+describe("normalizeSearchQuery", () => {
+  it("lowercases and trims", () => {
+    expect(normalizeSearchQuery("  JPG To PNG ")).toBe("jpg to png");
+  });
+  it("maps the standalone digit 2 to 'to'", () => {
+    expect(normalizeSearchQuery("jpg 2 png")).toBe("jpg to png");
+  });
+  it("splits joined compact forms jpg2png", () => {
+    expect(normalizeSearchQuery("jpg2png")).toBe("jpg to png");
+  });
+  it("splits jpgtopng", () => {
+    expect(normalizeSearchQuery("jpgtopng")).toBe("jpg to png");
+  });
+  it("collapses separators - _ .", () => {
+    expect(normalizeSearchQuery("jpg-to_png.")).toBe("jpg to png");
+  });
+  it("expands synonyms jpeg -> jpg", () => {
+    expect(normalizeSearchQuery("jpeg to png")).toBe("jpg to png");
+  });
+  it("drops filler words convert/file/online but keeps formats", () => {
+    expect(normalizeSearchQuery("convert mp4 to mp3 file online")).toBe("mp4 to mp3");
+  });
+});
+
+describe("generateConversionKeywords", () => {
+  it("emits formats, aliases, phrasings and compact forms", () => {
+    const kw = generateConversionKeywords({ from: "JPG", to: "PNG" });
+    expect(kw).toEqual(
+      expect.arrayContaining([
+        "jpg",
+        "jpeg",
+        "png",
+        "jpg to png",
+        "jpeg to png",
+        "jpg2png",
+        "jpgtopng",
+        "png from jpg",
+        "jpg converter",
+        "png converter",
+      ]),
+    );
+  });
+  it("dedupes", () => {
+    const kw = generateConversionKeywords({ from: "PNG", to: "PNG" });
+    expect(new Set(kw).size).toBe(kw.length);
+  });
+});