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/zustand-stores.test.ts

@@ -2732,10 +2732,16 @@ describe("useAnalyticsStore", () => {
     expect(s.configLoaded).toBe(true);
   });
 
-  it("fetchConfig skips when already loaded", async () => {
+  it("fetchConfig refetches even when already loaded so opt-out converges", async () => {
     useAnalyticsStore.setState({ configLoaded: true });
+    fetchMock.mockResolvedValueOnce({
+      ok: true,
+      json: () => Promise.resolve({ enabled: false }),
+    });
     await useAnalyticsStore.getState().fetchConfig();
-    expect(fetchMock).not.toHaveBeenCalled();
+    // No one-shot guard: an already-open tab must pick up an instance-wide opt-out.
+    expect(fetchMock).toHaveBeenCalledWith("/api/v1/config/analytics");
+    expect(useAnalyticsStore.getState().config).toEqual({ enabled: false });
   });
 
   it("fetchConfig sets configLoaded=true on error", async () => {