perf(storage): 极简化任务历史并增加保留治理

停止持久化 provider 原始响应、兼容响应快照、attempt/event/outbox 重复 JSON，并由标准任务结果动态生成 Kling/Keling/Volces 兼容响应。

增加事件去重与预算、极简 callback 投递、7/30 天分批清理、安全删除条件、并发迁移索引及可实际恢复的任务域排除备份。历史清理默认关闭，待兼容协议和异步恢复在线验证后单独启用。

验证：Go 全量测试与 go vet、PostgreSQL 18 集成与实际备份恢复、迁移安全测试、bash -n、ShellCheck、Compose 配置和人工发布脚本测试均通过。

apps/api/internal/store/rate_limits.go

@@ -469,17 +469,37 @@ RETURNING id::text`)
 	for _, taskID := range asyncTaskIDs {
 		if _, err := tx.Exec(ctx, `
 INSERT INTO gateway_task_events (task_id, seq, event_type, status, phase, progress, message, payload, simulated)
-VALUES (
-  $1::uuid,
+SELECT
+  task.id,
   COALESCE((SELECT MAX(seq) + 1 FROM gateway_task_events WHERE task_id = $1::uuid), 1),
-  'task.recovered',
+  'task.queued',
   'queued',
-  'recovered',
-  0.2,
-  'async task recovered after service restart',
-  '{"code":"server_restarted"}'::jsonb,
+  NULL,
+  0,
+  NULL,
+  '{}'::jsonb,
   false
-)`, taskID); err != nil {
+FROM gateway_tasks task
+WHERE task.id = $1::uuid
+  AND (
+    SELECT count(*)
+    FROM gateway_task_events event
+    WHERE event.task_id = task.id
+      AND event.event_type NOT IN (
+        'task.completed', 'task.failed', 'task.cancelled',
+        'task.billing.settled', 'task.billing.released', 'task.billing.review'
+      )
+  ) < 16
+  AND NOT EXISTS (
+    SELECT 1
+    FROM gateway_task_events event
+    WHERE event.task_id = task.id
+      AND event.seq = (SELECT MAX(last_event.seq) FROM gateway_task_events last_event WHERE last_event.task_id = task.id)
+      AND event.event_type = 'task.queued'
+      AND COALESCE(event.status, '') = 'queued'
+      AND event.platform_id IS NULL
+      AND event.simulated = false
+  )`, taskID); err != nil {
 			return RuntimeRecoveryResult{}, err
 		}
 	}
@@ -488,9 +508,10 @@ VALUES (
 	taskRows, err := tx.Query(ctx, `
 UPDATE gateway_tasks
 SET status = 'failed',
-    error = 'task interrupted by service restart',
+    error = NULL,
     error_code = 'server_restarted',
     error_message = 'task interrupted by service restart',
+    remote_task_payload = '{}'::jsonb,
     finished_at = now(),
     updated_at = now()
 WHERE async_mode = false
@@ -520,12 +541,12 @@ INSERT INTO gateway_task_events (task_id, seq, event_type, status, phase, progre
 VALUES (
   $1::uuid,
   COALESCE((SELECT MAX(seq) + 1 FROM gateway_task_events WHERE task_id = $1::uuid), 1),
-  'task.recovered',
+  'task.failed',
   'failed',
-  'recovered',
-  1,
-  'task interrupted by service restart',
-  '{"code":"server_restarted"}'::jsonb,
+  NULL,
+  0,
+  NULL,
+  '{}'::jsonb,
   false
 )`, taskID); err != nil {
 			return RuntimeRecoveryResult{}, err