fix(libraries): prevent adding documents to read-only libraries

[thostetler]

• Read-only libraries are visually disabled (greyed out, aria-disabled) in the Add to Library modal and cannot be selected — closes SCIX-864
• Switched mutate → mutateAsync so Promise.all actually awaits the API call; previously mutate returned void, causing Promise.all to resolve immediately and always show the success banner regardless of the 403 response
• MSW mock handler now returns 403 when attempting to add/remove documents on a library with permission === 'read'
• permission column is now visible in the modal table so users can see why some rows are disabled
• Added disabledIds prop to LibraryListTable for general-purpose row disabling
• Add tests

[codecov]

Codecov Report

❌ Patch coverage is 38.88889% with 66 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.9%. Comparing base (9b8f252) to head (7029529).

Files with missing lines	Patch %	Lines
src/components/Libraries/LibraryListTable.tsx	37.0%	63 Missing ⚠️
src/components/Libraries/AddToLibraryModal.tsx	62.5%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #845     +/-   ##
========================================
+ Coverage    62.5%   62.9%   +0.5%     
========================================
  Files         317     323      +6     
  Lines       36576   37917   +1341     
  Branches     1673    1731     +58     
========================================
+ Hits        22830   23830   +1000     
- Misses      13706   14047    +341     
  Partials       40      40             

Files with missing lines	Coverage Δ
src/components/Libraries/AddToLibraryModal.tsx	85.4% <62.5%> (ø)
src/components/Libraries/LibraryListTable.tsx	64.5% <37.0%> (ø)

... and 9 files with indirect coverage changes

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[Copilot]

Pull request overview

This PR hardens the “Add to Library” flow so read-only libraries can’t be selected/modified, and aligns UI + mocks + tests with the expected 403 behavior.

Changes:

• Disable read-only libraries in the Add to Library modal (UI affordances + aria-disabled) and show the permission column for clarity.
• Fix async behavior by switching to mutateAsync so batch operations actually await API results before showing success.
• Update MSW handlers and add modal tests covering read-only selection and 403 error handling.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
src/mocks/handlers/libraries.ts	Return 403 when attempting add/remove docs on permission === 'read' libraries.
src/components/Libraries/AddToLibraryModal.tsx	Use mutateAsync; compute/read-only IDs; pass disabledIds; show permission column.
src/components/Libraries/LibraryListTable.tsx	Add disabledIds prop and apply row-level disabling semantics/styling.
src/components/Libraries/__tests__/AddToLibraryModal.test.tsx	Add tests for read-only disabling and 403 behavior.

[shinyichen]

👍