feat(jobs): wire auto-triggering on bom_changed events, add module guard
- Add IsEnabled("jobs") guard to triggerJobs() to skip when module disabled
- Fire bom_changed trigger from HandleAddBOMEntry, HandleUpdateBOMEntry,
HandleDeleteBOMEntry (matching existing HandleMergeBOM pattern)
- Add 4 integration tests: revision trigger, BOM trigger, filter mismatch,
module disabled
- Fix AppShell overflow: hidden -> auto so Settings page scrolls
- Clean old frontend assets in deploy script before extracting
Closes #107
747bae8354