MechaCat02 e7c0485dbf feat(modules): GroupFilesService + files::shared_collection handle (§11.6 files C3) ...

- shared/group_files: GroupFilesService trait (mirror FilesService, no
  group id arg — owner resolved from cx.app_id), GroupFilesError (clone of
  FilesError + CollectionNotShared) with From<FilesError>, Noop.
- services: group_files field + with_group_files setter (default Noop).
- group_files_service: GroupFilesServiceImpl — owning_group via the
  registry resolver (kind=files) → CollectionNotShared; reads open
  (script_gate), writes fail closed (script_gate_require_principal);
  reuses validate_files_collection + the NewFile/FileUpdate validators +
  sanitize_stored_content_type + the per-file size cap; no events.
- sdk/files: GroupFilesHandle + files::shared_collection(name) + the
  create/head/get/update/delete/list group methods (Blob in/out).
- picloud: construct FsGroupFilesRepo (sharing the files root + size cap)
  + GroupFilesServiceImpl, .with_group_files(...).

Unit tests: off-chain → CollectionNotShared; anon read OK / anon write
Forbidden; oversize → TooLarge.

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

2026-06-30 19:46:39 +02:00

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