feat(ui): add message cache management page and dashboard enhancements

- Introduced MessageCachePage for browsing and managing cached webhook events.
- Enhanced DashboardPage to display runtime stats and message cache information.
- Added new API types for message cache events and system stats.
- Integrated SwaggerPage for API documentation and live request testing.

.gitignore

@@ -51,3 +51,5 @@ Thumbs.db
 server.log
 /data/*
 cmd/server/__debug*
+.gocache/
+.pnpm-store/