Add Quick Apply and batch update to bulk info provider import

[Sebbeben]

Summary

Adds one-click Quick Apply buttons and a batch Apply All (Top Results) action to the bulk info provider import step 2 page, so users no longer need to open every single component and click save twice to update from provider data.

This was requested by a user: "For something that should be added is on bulk import to be able to just mass update from provider rather than having to open EVERY single component and click save changes twice, so annoying"

Features

• Quick Apply per result: AJAX button that fetches provider details and merges them into the part in one click
• Apply All (Top Results): Batch button that applies the top-priority result for every pending part at once
• Match highlighting: Green "Match" badge when the source keyword matches the result (MPN, SPN, name)
• Top result indicator: First result (highest priority) is highlighted with a green row and "Top" badge
• Active/History split on manage page: Active jobs shown at top, completed/stopped jobs in a separate History section
• Job ID display: Each job now shows #ID for easy identification
• Navigation buttons: "Back to Jobs" and "Back to Parts" on the step 2 review page
• Completion banner: Clear indication when a job is fully completed
• Auto-priority for field mappings: Each new field mapping row auto-increments priority
• Stale job cleanup: Pending jobs with 0 results are automatically cleaned up

Bug fixes

• Fix TypeError in LCSCProvider when keyword is numeric string (cast to string)
• Fix 500 error when field mapping has null field or no search results
• Fix spinning icon on manage page (was using pulse animation that never stopped)
• Fix text visibility issues in dark theme for source field badges
• Remove unexpected "reason for skipping" prompt when clicking Quick Apply

Screenshots

Step 2 - Review page with Quick Apply and match highlighting:

Manage page with Active/History split and job IDs:

Test plan

• PHPStan: 0 errors on all changed files
• PHPUnit: All new tests pass (8 new test methods, 16+ assertions)
• Manual testing on live server with real LCSC provider data
• Quick Apply on individual parts with single and multiple results
• Apply All (Top Results) batch operation
• Match highlighting for MPN, SPN, and name matches
• Navigation buttons and completion flow
• Active/History job separation on manage page

[codecov]

Codecov Report

❌ Patch coverage is 75.20661% with 30 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.50%. Comparing base (343c078) to head (86d5323).
⚠️ Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
...rc/Controller/BulkInfoProviderImportController.php	75.00%	30 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1316      +/-   ##
============================================
+ Coverage     56.31%   56.50%   +0.19%     
- Complexity     8320     8349      +29     
============================================
  Files           611      611              
  Lines         26726    26834     +108     
============================================
+ Hits          15050    15162     +112     
+ Misses        11676    11672       -4     

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