Changelog

2026.03.1

Initial external gateway release:

• POST /api/v1/ext/kb/query
• API key authentication with bach_live_... and bach_test_... formats
• tiered rate limiting and cost-budget enforcement
• filtered external OpenAPI schema
• request audit logging with X-Request-Id
• admin-managed webhook infrastructure and event signing
• MkDocs developer portal
• CI workflow for generated Python and TypeScript SDKs