fix(test-schema): approval_records 補 matched_playbook_id 欄位

CI B5 整合測試失敗根因：04ff225 在 ORM model 加 matched_playbook_id，
但 tests/integration/setup_test_schema.sql 未同步，導致
test_approval_lifecycle / test_incident_approval_association 拋
UndefinedColumnError 阻擋 CD Pipeline build-and-deploy。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/tests/integration/setup_test_schema.sql

@@ -70,6 +70,7 @@ CREATE TABLE IF NOT EXISTS approval_records (
     incident_id VARCHAR,
     telegram_message_id INTEGER,
     telegram_chat_id INTEGER,
+    matched_playbook_id VARCHAR(36),
     created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     expires_at TIMESTAMPTZ,