feat(db): integrate Flyway migration for BladeX and martial tables

- Add V0__bladex_init.sql with full BladeX schema and data
- Replace V1__baseline.sql with V1__martial_tables_init.sql
- Update V6, V7 to idempotent operations (check column exists)
- Add database backup files for safety
- Remove minio_data from git tracking

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

src/main/resources/db/migration/V1__baseline.sql

@@ -1,12 +0,0 @@
--- =====================================================
--- Flyway 基线脚本
--- 版本: V1
--- 描述: 记录当前数据库结构基线，不执行任何操作
--- 日期: 2024-12-29
--- =====================================================
-
--- 此脚本作为基线版本，用于标记已有数据库的初始状态
--- 由于 baseline-on-migrate: true，Flyway 会自动将此版本标记为已执行
--- 后续的迁移脚本从 V2 开始
-
-SELECT 1;

src/main/resources/db/migration/V6__add_deduction_item_project_id.sql

@@ -5,4 +5,16 @@
 -- Date: 2026-01-16
 -- =====================================================
 
-ALTER TABLE martial_deduction_item ADD COLUMN project_id BIGINT NULL COMMENT '项目ID' AFTER applicable_projects;
+-- Idempotent: Only add column if not exists
+SET @dbname = DATABASE();
+SET @tablename = 'martial_deduction_item';
+SET @columnname = 'project_id';
+SET @preparedStatement = (SELECT IF(
+  (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS 
+   WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = @tablename AND COLUMN_NAME = @columnname) > 0,
+  'SELECT 1',
+  CONCAT('ALTER TABLE ', @tablename, ' ADD COLUMN ', @columnname, ' BIGINT NULL COMMENT "项目ID"')
+));
+PREPARE alterIfNotExists FROM @preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;

src/main/resources/db/migration/V7__add_judge_invite_referee_type.sql

@@ -1,3 +1,20 @@
--- Add referee_type column to martial_judge_invite table
--- This field stores the referee type: 1-Chief Judge, 2-Judge, 3-General Judge
-ALTER TABLE martial_judge_invite ADD COLUMN referee_type INT DEFAULT NULL COMMENT '裁判类型：1-主裁判，2-裁判员，3-总裁';
+-- =====================================================
+-- Migration: Add referee_type to martial_judge_invite
+-- Version: V7
+-- Description: Add referee type column (1-Chief Judge, 2-Judge, 3-General Judge)
+-- Date: 2026-01-20
+-- =====================================================
+
+-- Idempotent: Only add column if not exists
+SET @dbname = DATABASE();
+SET @tablename = 'martial_judge_invite';
+SET @columnname = 'referee_type';
+SET @preparedStatement = (SELECT IF(
+  (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS 
+   WHERE TABLE_SCHEMA = @dbname AND TABLE_NAME = @tablename AND COLUMN_NAME = @columnname) > 0,
+  'SELECT 1',
+  CONCAT('ALTER TABLE ', @tablename, ' ADD COLUMN ', @columnname, ' INT DEFAULT NULL COMMENT "裁判类型：1-主裁判，2-裁判员，3-总裁"')
+));
+PREPARE alterIfNotExists FROM @preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;