feat: Add i18n for apiserver.

.cursorrules

@@ -1,4 +1,4 @@
-- Only include essential comments where the code is not self-explanatory. Avoid redundant or obvious comments.
+- All comments must be in English and only included where the code is not self-explanatory—avoid redundant or obvious comments.
 - You can read docs/.ai/SOP.server.zh-CN.md for server when the task starts.
 - You can read docs/.ai/SOP.client.zh-CN.md for web when the task starts.
 - Please check out docs/.ai/release.md for the release process.

.env.example

@@ -103,3 +103,5 @@ TZ=UTC
 
 SUPER_ADMIN_USERNAME=admin
 SUPER_ADMIN_PASSWORD=297df52fbc321ebf7198d497fe1c9206PlsChangeMe
+
+APISERVER_I18N_PATH=./configs/i18n

cmd/apiserver/main.go

@@ -7,6 +7,8 @@ import (
 	"os"
 	"time"
 
+	"github.com/mcp-ecosystem/mcp-gateway/internal/i18n"
+
 	"github.com/mcp-ecosystem/mcp-gateway/pkg/logger"
 
 	"github.com/mcp-ecosystem/mcp-gateway/internal/apiserver/database"
@@ -230,6 +232,18 @@ func startServer(logger *zap.Logger, router *gin.Engine) {
 	}
 }
 
+// initI18n initializes the i18n translator
+func initI18n(cfg *config.I18nConfig) {
+	translationsPath := cfg.Path
+	if translationsPath == "" {
+		translationsPath = "configs/i18n"
+	}
+
+	if err := i18n.InitTranslator(translationsPath); err != nil {
+		log.Printf("Warning: Failed to load translations: %v\n", err)
+	}
+}
+
 func run() {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
@@ -249,6 +263,9 @@ func run() {
 	db := initDatabase(logger, &cfg.Database)
 	defer db.Close()
 
+	// Initialize i18n translator
+	initI18n(&cfg.I18n)
+
 	// Initialize super admin
 	if err := initSuperAdmin(ctx, db, cfg); err != nil {
 		logger.Fatal("Failed to initialize super admin", zap.Error(err))

configs/apiserver.yaml

@@ -11,6 +11,10 @@ logger:
   color: ${APISERVER_LOGGER_COLOR:true}                                           # whether to use color in console output
   stacktrace: ${APISERVER_LOGGER_STACKTRACE:true}                                 # whether to include stacktrace in error logs
 
+# i18n configuration
+i18n:
+  path: "${APISERVER_I18N_PATH:./configs/i18n}"                                     # path to i18n translation files
+
 # Super admin configuration
 super_admin:
   username: "${SUPER_ADMIN_USERNAME:admin}"