- Guard against malformed PROPFIND responses where tag["id"] is None
before calling get_files_by_tag (prevents
<oc:systemtag>None</oc:systemtag> dispatch).
- Add OCS-APIRequest: true header to get_tag_by_name and
get_files_by_tag to match every other PROPFIND/REPORT in the file —
fixes a latent reverse-proxy compatibility hazard.
- Add test_copy_resource_blocks_excluded_source to mirror the
existing move-source coverage; closes the asymmetric test gap.
- Add test_skips_tag_with_missing_id covering the new fail-open
branch in _resolve_one_tag.
- Reword _resolve_one_tag docstring: "distinct slot" was misleading
(tasks append rather than pre-allocate).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
