Six findings raised in the PR review:
🔴 Blocking
- Fail-open on tag-resolution errors. get_excluded_file_paths now
wraps each tag's get_tag_by_name and get_files_by_tag call in
try/except; failures log a warning and the tag is skipped, rather
than propagating to the caller and disabling all WebDAV tools when
the systemtags endpoint is degraded. Documented in the docstring as
the intended fail-open behaviour (threat model is preventing
accidental exfiltration, not surviving server compromise).
🟡 Important
- nc_webdav_list_directory now raises ToolError when the listed path
itself is tagged, instead of silently returning an empty listing
after a wasted PROPFIND. Behaviour now mirrors the mutating tools.
- Destination error messages in move/copy/create_directory said "is
inside" but is_path_excluded matches exact paths too. Reworded to
"is or is inside".
🟢 Nits
- get_excluded_file_paths log message clarified: N counts
directly-tagged paths, not total descendants.
- Test isolation: tests/unit/conftest.py already has an autouse
_reload_dynaconf_after_test fixture that handles teardown. Removed
the redundant module-local fixture I had drafted; documented the
reliance in the module docstring instead.
- Added tests/unit/test_webdav_tools_exclusion.py: 12 server-layer
tests that register the WebDAV tools on a fresh FastMCP and invoke
each tool's underlying function with a mocked excluded set, asserting
ToolError is raised / results filtered as expected. Catches future
guard-integration regressions (e.g. wrong argument order).
Also added two unit tests for the new fail-open behaviour.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
