Allow restricting custom origin error HTML to GET requests so other methods pass through origin responses. Adds option seed, snapshot field, edge limit_except/Lua handling, and admin UI switch.
Implement Cloudflare connection management, pointing groups and members, asynchronous A-record reconciliation, node IP triggers, admin APIs, management pages, migrations, tests, and documentation.
Reorganize internal packages into platform/infra/shared layers and update imports, docs, and seed-count tests to match current system configs.