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/web/fuse-search.test.ts

@@ -0,0 +1,34 @@
+import { normalizeSearchQuery, TOOLS } from "@snapotter/shared";
+import Fuse from "fuse.js";
+import { describe, expect, it } from "vitest";
+
+const OPTS = {
+  keys: [
+    { name: "name", weight: 0.35 },
+    { name: "description", weight: 0.25 },
+    { name: "keywords", weight: 0.3 },
+    { name: "modality", weight: 0.15 },
+    { name: "id", weight: 0.15 },
+    { name: "category", weight: 0.1 },
+  ],
+  threshold: 0.45,
+  ignoreLocation: true,
+  minMatchCharLength: 2,
+};
+
+function search(q: string) {
+  const fuse = new Fuse(TOOLS, OPTS as never);
+  return fuse.search(normalizeSearchQuery(q)).map((r) => r.item.id);
+}
+
+describe("app fuzzy search finds converters by variation", () => {
+  it.each([
+    ["jpeg to png", "jpg-to-png"],
+    ["jpg2png", "jpg-to-png"],
+    ["heic jpg", "heic-to-jpg"],
+    ["mov mp4", "mov-to-mp4"],
+    ["convert mp4 to mp3", "mp4-to-mp3"],
+  ])("%s finds %s", (q, id) => {
+    expect(search(q).slice(0, 5)).toContain(id);
+  });
+});