feat(config): per-service operator config + secrets (theme M1)
Services can declare an operator-configurable config block in /_manifest
(ordered array of single-key objects, pure schema: type cleartext|password,
description?, key = container env var name). Maestro:
- lib/secrets: AES-256-GCM FileStore; dedicated secrets.key (32 bytes,
chmod 600, separate from session.key); secrets.json rows keyed
service/field; cleartext read-write, password write-only & encrypted at
rest, decrypted only at injection. Footure key rotation = delete the key.
- handlers/config (owner-gated via auth.RequireSession):
GET /api/services/{service}/config (merged schema+set view, password
values never returned), PUT/DELETE /api/services/{service}/config/{key}
(uniform ERR_NOT_FOUND / ERR_INVALID_PAYLOAD error shape).
- start.go: injectConfigSecrets runs after injectServiceIdentity; only
operator-set rows become env on non-oneoff services; unset fields keep
the compose default.
- Manifest.Config carried onto Container/RegistryContainer/InstalledMetadata
via updateInstalledMetadataFromManifest + watcher.
- Frontend: per-service Settings dialog (ServiceConfigDialog) + api
helpers; cleartext editable, password set/unset indicator only.
- spec.yaml documents the new endpoints/schemas.