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.

apps/api/src/routes/analytics.ts

@@ -2,16 +2,29 @@ import { ANALYTICS_BAKED } from "@snapotter/shared";
 import { eq } from "drizzle-orm";
 import type { FastifyInstance } from "fastify";
 import { db, schema } from "../db/index.js";
+import { analyticsEnabled } from "../lib/analytics-gate.js";
 
 export async function analyticsRoutes(app: FastifyInstance): Promise<void> {
   app.get("/api/v1/config/analytics", async () => {
+    // Effective state: compile-time bake AND the runtime instance opt-out.
+    if (!analyticsEnabled()) {
+      return {
+        enabled: false,
+        posthogApiKey: "",
+        posthogHost: "",
+        sentryDsn: "",
+        sampleRate: 0,
+        instanceId: "",
+      };
+    }
+
     const [row] = await db
       .select()
       .from(schema.settings)
       .where(eq(schema.settings.key, "instance_id"));
 
     return {
-      enabled: ANALYTICS_BAKED.enabled,
+      enabled: true,
       posthogApiKey: ANALYTICS_BAKED.posthogApiKey,
       posthogHost: ANALYTICS_BAKED.posthogHost,
       sentryDsn: ANALYTICS_BAKED.sentryDsn,