feat(acceptance): 建立同构验收与弹性容量体系

实现本地三节点 K3s 同构环境、脱敏生产快照、Gemini 图片和多参考图视频协议模拟、统一验收报告及故障注入。\n\n新增 Worker 容量控制器、资源与连接预算、任务恢复保护，并将生产验收拆分为 validation 执行和人工 CAS 放量。\n\n验证包括 Go 全量测试、PostgreSQL HTTP 集成测试、go vet、OpenAPI、ShellCheck、前端检查、迁移及发布脚本测试。

apps/api/internal/store/admission_queue_integration_test.go

@@ -731,6 +731,53 @@ SELECT
 		t.Fatalf("recovered task left admissions=%d leases=%d", recoveredAdmissions, recoveredLeases)
 	}
 
+	remoteRecoveryTask := createTask(true)
+	if _, err := first.pool.Exec(ctx, `
+UPDATE gateway_tasks
+SET status = 'running',
+    remote_task_id = 'remote-video-task',
+    execution_token = gen_random_uuid(),
+    execution_lease_expires_at = now() - interval '1 second'
+WHERE id = $1::uuid`,
+		remoteRecoveryTask.ID,
+	); err != nil {
+		t.Fatalf("prepare persisted remote task recovery task: %v", err)
+	}
+	if _, err := first.pool.Exec(ctx, `
+INSERT INTO gateway_task_attempts (
+  task_id, attempt_no, queue_key, status, upstream_submission_status
+)
+VALUES ($1::uuid, 1, 'integration-test', 'running', 'submitting')`,
+		remoteRecoveryTask.ID,
+	); err != nil {
+		t.Fatalf("prepare persisted remote task recovery: %v", err)
+	}
+	recovery, err = first.RecoverInterruptedRuntimeState(ctx)
+	if err != nil {
+		t.Fatalf("recover persisted remote task: %v", err)
+	}
+	var remoteStatus, remoteErrorCode string
+	var remoteAttemptRetryable bool
+	if err := first.pool.QueryRow(ctx, `
+SELECT task.status, COALESCE(task.error_code, ''), attempt.retryable
+FROM gateway_tasks task
+JOIN gateway_task_attempts attempt ON attempt.task_id = task.id
+WHERE task.id = $1::uuid`, remoteRecoveryTask.ID).Scan(
+		&remoteStatus,
+		&remoteErrorCode,
+		&remoteAttemptRetryable,
+	); err != nil {
+		t.Fatalf("read persisted remote task recovery: %v", err)
+	}
+	if remoteStatus != "queued" || remoteErrorCode != "" || !remoteAttemptRetryable {
+		t.Fatalf(
+			"persisted remote task recovery status=%s code=%s retryable=%t, want queued resume",
+			remoteStatus,
+			remoteErrorCode,
+			remoteAttemptRetryable,
+		)
+	}
+
 	lockedRecoveryTask := createTask(true)
 	unlockedRecoveryTask := createTask(true)
 	if _, err := first.pool.Exec(ctx, `