feat: 新增财务应用的核心数据模型定义，包含账户、交易类型、货币等枚举。

cmd/migrate/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"log"
+	"os"
 	"path/filepath"
 
 	"accounting-app/internal/config"
@@ -20,13 +21,30 @@ func main() {
 		filepath.Join("..", "..", ".env"), // Explicit path
 	}
 
+	var envDir string
 	for _, envPath := range envPaths {
 		if err := godotenv.Load(envPath); err == nil {
-			log.Printf("Loaded environment from: %s", envPath)
+			log.Printf("Loaded base environment from: %s", envPath)
+			envDir = filepath.Dir(envPath)
 			break
 		}
 	}
 
+	// Load specific environment file if APP_ENV is set (e.g. .env.dev, .env.prod)
+	if appEnv := os.Getenv("APP_ENV"); appEnv != "" {
+		targetEnvFile := ".env." + appEnv
+		targetEnvPath := targetEnvFile
+		if envDir != "" && envDir != "." {
+			targetEnvPath = filepath.Join(envDir, targetEnvFile)
+		}
+
+		if err := godotenv.Overload(targetEnvPath); err == nil {
+			log.Printf("Loaded specific environment config from: %s", targetEnvPath)
+		} else {
+			log.Printf("Note: Specific environment file %s not found or could not be loaded", targetEnvPath)
+		}
+	}
+
 	// Load configuration
 	cfg := config.Load()
 

internal/models/models.go

@@ -866,6 +866,7 @@ func AllModels() []interface{} {
 		&TransactionImage{},   // Feature: accounting-feature-upgrade
 		&UserSettings{},       // Feature: accounting-feature-upgrade
 		&Notification{},       // Feature: notification-center
+		&SystemAnnouncement{}, // Feature: system-announcement
 	}
 }