feat: Flyway 启动自动 repair → migrate，应用自愈失败迁移记录

- FlywayConfig: 自定义 FlywayMigrationStrategy
- 启动时先 flyway.repair() 清理残留失败记录
- 再 flyway.migrate() 执行待迁移
- 全程应用内完成，无需外部操作

par-api/src/main/java/com/par/api/config/FlywayConfig.java

@@ -0,0 +1,26 @@
+package com.par.api.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.flywaydb.core.Flyway;
+import org.springframework.boot.autoconfigure.flyway.FlywayMigrationStrategy;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Flyway 自动修复配置
+ * 启动时自动清理残留的失败迁移记录，再执行待迁移
+ */
+@Slf4j
+@Configuration
+public class FlywayConfig {
+
+    @Bean
+    public FlywayMigrationStrategy flywayMigrationStrategy() {
+        return (Flyway flyway) -> {
+            log.info("Flyway repair: cleaning failed migration records...");
+            flyway.repair();
+            log.info("Flyway migrate: applying pending migrations...");
+            flyway.migrate();
+        };
+    }
+}

par-api/src/main/resources/application.yml

@@ -31,7 +31,6 @@ spring:
     locations: classpath:db/migration
     baseline-on-migrate: true
     baseline-version: 0
-    repair-on-migrate: true
 
 mybatis-plus:
   configuration: