feat: add brand asset cleanup worker and related functionality

- Implemented a new BrandAssetCleanupWorker to handle the cleanup of brand-related assets after a brand is deleted.
- Added SQL queries for cleaning up articles, keywords, questions, competitors, and monitoring data associated with a brand.
- Introduced a new API endpoint to delete publish records.
- Updated the router to include the new delete publish record endpoint.
- Added tests for the BrandAssetCleanupWorker to ensure proper functionality.
- Created migration scripts to support soft deletion of publish records and to add the brand asset cleanup scheduler job.

server/migrations_ops/20260619100000_add_brand_asset_cleanup_scheduler_job.down.sql

@@ -0,0 +1,2 @@
+DELETE FROM ops.scheduler_jobs
+WHERE job_key = 'brand_asset_cleanup';

server/migrations_ops/20260619100000_add_brand_asset_cleanup_scheduler_job.up.sql

@@ -0,0 +1,17 @@
+INSERT INTO ops.scheduler_jobs
+    (job_key, display_name, category, description, enabled, schedule_type, interval_seconds, timezone, timeout_seconds, batch_size, config)
+VALUES
+    ('brand_asset_cleanup', '品牌资产后台清理', 'tenant', '删除品牌后静默清理该品牌下的文章、词库、竞品和监控采集数据；发布记录作为用户发文总账保留。', true, 'interval', 60, 'Asia/Shanghai', 120, 20,
+     '{"batch_size":20,"statement_timeout":"8s","dry_run":false}'::jsonb)
+ON CONFLICT (job_key) DO UPDATE
+SET display_name = EXCLUDED.display_name,
+    category = EXCLUDED.category,
+    description = EXCLUDED.description,
+    enabled = EXCLUDED.enabled,
+    schedule_type = EXCLUDED.schedule_type,
+    interval_seconds = EXCLUDED.interval_seconds,
+    timezone = EXCLUDED.timezone,
+    timeout_seconds = EXCLUDED.timeout_seconds,
+    batch_size = EXCLUDED.batch_size,
+    config = ops.scheduler_jobs.config || EXCLUDED.config,
+    updated_at = NOW();