Test/coverage improvements

[gallayl]

🧪 Summary

Add unit tests across frontend services, backend actions, and common utilities to improve overall test coverage.

✨ Changes

📦 Common

• Added tests for file-utils (getFileName, getParentPath, getFullPath)
• Added tests for url-encode-decode with roundtrip verification

🖥️ Frontend

• Components: Widget routing tests, SettingsMenuItem, WizardStep with navigation
• Services: SessionService (auth flows), FileAssociationsService (file type detection), WatchProgressUpdater, getErrorMessage

⚙️ Backend

• Drive actions: DeleteFileAction, UploadAction with authorization checks
• Identity actions: PasswordResetAction, RegisterAction with error handling
• Media utilities: ensureMovieExists, linkMovie with OMDB integration mocking
• Patcher: runPatch, checkForOrphanedPatch with status transitions
• Utils: physicalPathUtils, wakeOnLan with magic packet validation

🧪 Test Plan

• All new tests pass (yarn vitest run)
• No linting errors
• Follows existing test patterns (vi.mock, usingAsync, Injector setup)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 30.38%. Comparing base (73ad58f) to head (44205ca).

Additional details and impacted files

@@             Coverage Diff              @@
##           develop     #101       +/-   ##
============================================
+ Coverage    20.04%   30.38%   +10.34%     
============================================
  Files          162      207       +45     
  Lines         2579     3429      +850     
  Branches       349      525      +176     
============================================
+ Hits           517     1042      +525     
- Misses        1835     2137      +302     
- Partials       227      250       +23     

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[codecov-commenter]

Bundle Report

Bundle size has no change ✅