FileAtlas 1.2.2 Web Performance Hotfix - QA
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Patched files: 4
PHP syntax checks: 4/4 PASS
Database migration: none
Existing FileAtlas database/data: unchanged
Existing config/config.php: untouched

Primary fixes:
- workers.php no longer scans/aggregates all worker_items on each 5-second refresh.
- scans.php limits jobs before indexed worker-item counts.
- index.php no longer calculates duplicate summary totals synchronously.
- CLI stats cache now includes duplicate summary totals.