refactor(analytics): replace PostHog with OpenPanel (#2480)

server/apps/api/package.json

@@ -27,6 +27,7 @@
     "@langfuse/tracing": "catalog:",
     "@moeru/eventa": "catalog:",
     "@moeru/std": "catalog:",
+    "@openpanel/sdk": "catalog:",
     "@opentelemetry/api": "catalog:",
     "@opentelemetry/api-logs": "catalog:",
     "@opentelemetry/exporter-logs-otlp-proto": "catalog:",
@@ -57,7 +58,6 @@
     "nanoid": "catalog:",
     "ofetch": "catalog:",
     "pg": "catalog:",
-    "posthog-node": "catalog:",
     "stripe": "catalog:",
     "unspeech": "catalog:xsai",
     "valibot": "catalog:",