chore: add v0.13.0 db backup before update to v0.14.0

Author: huoshen80

src-tauri/migration/src/m20251229_000004_hybrid_single_table.rs

@@ -16,6 +16,8 @@
 //!
 //! 注意：本迁移要求 SQLite >= 3.35.0 以支持 DROP COLUMN
 
+use crate::backup::backup_sqlite;
+use log::{error, info};
 use sea_orm::{ConnectionTrait, DatabaseBackend, Statement};
 use sea_orm_migration::prelude::*;
 use sea_orm_migration::sea_orm::TransactionTrait;
@@ -141,6 +143,15 @@ fn to_json<T: Serialize>(data: &T) -> Result<String, DbErr> {
 #[async_trait::async_trait]
 impl MigrationTrait for Migration {
     async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        // ========================================
+        // 备份数据库
+        // ========================================
+        info!("[MIGRATION] Starting database backup before hybrid single table migration...");
+        match backup_sqlite("v0.13.0").await {
+            Ok(backup_path) => info!("[MIGRATION] Backup successful: {:?}", backup_path),
+            Err(e) => error!("[MIGRATION] Backup failed (continuing anyway): {}", e),
+        }
+
         let conn = manager.get_connection();
 
         // 幂等性检查：如果已存在 vndb_data 列则跳过