merge: resolve conflicts with develop (telemetry + lockfile)

Keep both Mosaic Telemetry section (from develop) and Matrix Dev
Environment section (from feature branch) in .env.example.
Regenerate pnpm-lock.yaml with both dependency trees merged.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/api/package.json

@@ -27,6 +27,7 @@
   "dependencies": {
     "@anthropic-ai/sdk": "^0.72.1",
     "@mosaic/shared": "workspace:*",
+    "@mosaicstack/telemetry-client": "^0.1.0",
     "@nestjs/axios": "^4.0.1",
     "@nestjs/bullmq": "^11.0.4",
     "@nestjs/common": "^11.1.12",