Cameron Cordes ce9fa94cb4 libraries: surface globals, normalise excluded_dirs on write ...

Two follow-ups to the PATCH endpoint:

1. GET /libraries now returns ``global_excluded_dirs`` alongside the
   library list — the union-with-globals semantics is invisible from
   the per-library row alone, and the admin UI needs to show what's
   already being skipped before the operator adds entries that would
   duplicate.

2. PATCH /libraries/{id} canonicalises the excluded_dirs string on
   write via the new ``normalize_excluded_dirs_input``: trims per
   entry, drops empties, dedupes preserving first-occurrence order,
   comma-joins without inner whitespace. Empty / whitespace-only →
   NULL. Round-trip stable so re-saving an entry produces an
   identical row.

Five new tests cover the empty / whitespace, trim, dedup, round-trip,
and overlap-with-globals cases. effective_excluded_dirs continues to
keep overlapping entries between globals and per-library on purpose —
PathExcluder accepts repeats and there's no behavioural reason to
dedupe at merge time.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-13 08:58:04 -04:00

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