refactor: move health check endpoint to a more appropriate location i…

…n main.go to prevent gin wildcard handing in openai mode

main.go

@@ -80,13 +80,6 @@ func init() {
 func main() {
 	router := gin.Default()
 
-	// Health check endpoint
-	router.GET("/healthz", func(c *gin.Context) {
-		c.JSON(http.StatusOK, gin.H{
-			"status": "healthy",
-		})
-	})
-
 	// Proxy routes
 	if ProxyMode == "azure" {
 		router.GET("/v1/models", handleGetModels)
@@ -122,6 +115,13 @@ func main() {
 		router.Any("*path", handleOpenAIProxy)
 	}
 
+	// Health check endpoint
+	router.GET("/healthz", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{
+			"status": "healthy",
+		})
+	})
+
 	router.Run(Address)
 }