fix(billing): 封住发布前计费竞态

阻止上游提交状态不明的任务被租约接管后重复执行，并为人工复核保留可操作的结算记录。

将生产提交绑定到当前估价签名，统一复用预处理快照，并补强规则形状、定点溢出与历史规则兼容校验。

已通过 PostgreSQL 16 集成测试、Go 全量测试与静态检查、前端测试与构建、OpenAPI、依赖审计、镜像、迁移、流水线和 SemVer 门禁。

apps/api/migrations/0069_billing_correctness_v2.sql

@@ -95,6 +95,20 @@ ALTER TABLE model_pricing_rules
 
 UPDATE model_pricing_rules SET is_free = false WHERE is_free IS NULL;
 
+UPDATE model_pricing_rules
+SET calculator_type = CASE
+      WHEN resource_type IN ('text_input', 'text_cached_input', 'text_output', 'text_total') THEN 'token_usage'
+      WHEN resource_type = 'video' THEN 'duration_weight'
+      ELSE calculator_type
+    END,
+    unit = CASE
+      WHEN resource_type = 'video' AND unit = 'video' THEN '5s'
+      ELSE unit
+    END,
+    updated_at = now()
+WHERE (resource_type IN ('text_input', 'text_cached_input', 'text_output', 'text_total') AND calculator_type = 'unit_weight')
+   OR (resource_type = 'video' AND (calculator_type = 'unit_weight' OR unit = 'video'));
+
 ALTER TABLE model_pricing_rules
   ADD CONSTRAINT model_pricing_rules_explicit_free_v2_check CHECK (
     base_price > 0 OR (base_price = 0 AND is_free)
@@ -152,6 +166,30 @@ WHERE task.status = 'succeeded'
       AND transaction.transaction_type = 'task_billing'
   );
 
+INSERT INTO settlement_outbox (
+  task_id, event_type, action, amount, currency, pricing_snapshot, payload,
+  status, next_attempt_at, manual_review_reason
+)
+SELECT task.id,
+       'task.billing.review',
+       'settle',
+       COALESCE(task.final_charge_amount, 0),
+       COALESCE(NULLIF(task.billing_summary->>'currency', ''), 'resource'),
+       COALESCE(task.pricing_snapshot, '{}'::jsonb),
+       jsonb_build_object(
+         'taskId', task.id,
+         'classification', 'historical_success_without_charge'
+       ),
+       'manual_review',
+       now(),
+       'historical_success_without_charge'
+FROM gateway_tasks task
+WHERE task.billing_status = 'manual_review'
+  AND task.status = 'succeeded'
+  AND task.run_mode = 'production'
+  AND task.gateway_user_id IS NOT NULL
+ON CONFLICT (task_id, event_type) DO NOTHING;
+
 INSERT INTO settlement_outbox (
   task_id, event_type, action, amount, currency, payload, status, next_attempt_at
 )