Complete implementation for 四色牌 card game with working interactive frontend

.gitignore

@@ -1,43 +1,38 @@
-# If you prefer the allow list template instead of the deny list, see community template:
-# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
-#
-# Binaries for programs and plugins
+# Build artifacts
+cardgames
 *.exe
-*.exe~
 *.dll
 *.so
 *.dylib
-cardgames
-
-# Test binary, built with `go test -c`
-*.test
-
-# Code coverage profiles and other test artifacts
-*.out
-coverage.*
-*.coverprofile
-profile.cov
-
-# Dependency directories (remove the comment below to include it)
-# vendor/
 
-# Go workspace file
-go.work
-go.work.sum
-
-# env file
-.env
-
-# Editor/IDE
-# .idea/
-# .vscode/
-
-# PocketBase data directory
+# PocketBase data
 pb_data/
-pb_migrations/
-
-# SSL certificates (keep templates, ignore actual certs)
-ssl/*.pem
-ssl/*.key
-ssl/*.crt
-!ssl/.gitkeep
+*.db
+*.db-shm
+*.db-wal
+
+# Frontend build artifacts
+node_modules/
+dist/
+build/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+
+# Temporary files
+/tmp/
+*.tmp
+
+# Frontend source (pb_public is the served version)
+frontend/