feat(registry): community-mirror lifecycle + upsert client (JS #2183/#2187 parity) (#929)

* feat(registry): community-mirror lifecycle + upsert client (JS #2183/#2187 parity)

Add persisted community-mirror adagents lifecycle methods to RegistryClient,
matching the JS SDK route/body shapes:

- publish_community_mirror_adagents -> PUT /api/registry/mirrors/{platform}
- get_community_mirror_adagents -> GET /api/registry/mirrors/{platform}
  (returns None on HTTP 404), hydrating superseded_by from the wrapper
- list_community_mirror_adagents -> GET /api/registry/mirrors (limit/offset)
- upsert_community_mirror_adagents -> helper with platform inference from the
  config or a single consistent properties[].platform value

A build_community_mirror_adagents helper emits authorized_agents: [], strips
the platform routing key, and rejects authorization claims and generator-only
flags. Platform keys are trimmed/lowercased and validated against
^[a-z0-9_-]{1,64}$.

Closes #925

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(registry): type community-mirror client from generated registry models

adcp#5385 added the community-mirror lifecycle and schemas to the registry
OpenAPI spec. Vendor the updated spec from adcp main, regenerate the registry
types, and retype the community-mirror client methods from dict[str, Any] to
the generated Pydantic models.

- publish/upsert -> CommunityMirrorPublishResponse
- get -> CommunityMirrorGetResponse | None (full wrapper; superseded_by is on
  both the wrapper and adagents_json, so the prior hydration is dropped and the
  catalog-only invariant is enforced by the model)
- list -> CommunityMirrorListResponse
- add delete_community_mirror_adagents -> CommunityMirrorDeleteResponse, mapping
  the 409 not-superseded case to RegistryError
- build helper stops emitting authorized_agents (publish body is catalog-only;
  the service forces authorized_agents: [])

Add stable rename-map entries for the new generated collisions
(AdagentsJson1, the five CommunityMirrorPublishRequest anyOf variants) and for
generic inline names surfaced by the spec sync (Brand/Format/Collection/Data/
Success/Severity/DiscoveryMethod1/AuthorizationType/SelectionType/
PublisherProperty).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test(registry): map community-mirror operationIds in drift test

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: bokelley