feat(api): add Prometheus metrics and OpenTelemetry instrumentation for HTTP, auth, classifications, and diagnoses

apps/api/package.json

@@ -13,11 +13,17 @@
   },
   "dependencies": {
     "@elysiajs/cors": "1.4.2",
+    "@opentelemetry/api": "1.9.1",
+    "@opentelemetry/exporter-prometheus": "0.218.0",
+    "@opentelemetry/instrumentation-http": "0.218.0",
+    "@opentelemetry/sdk-node": "0.218.0",
+    "@opentelemetry/semantic-conventions": "1.41.1",
     "@zeavis/shared": "workspace:*",
     "bcryptjs": "^3.0.3",
     "drizzle-orm": "^0.45.2",
     "elysia": "^1.4.28",
-    "postgres": "^3.4.9"
+    "postgres": "^3.4.9",
+    "prom-client": "15.1.3"
   },
   "devDependencies": {
     "@types/bcryptjs": "^3.0.0",