- Move the overflow planning badge into a dedicated icon wrapper to prevent text overlap on mobile
- Add Header test coverage for active planning sessions in the mobile overflow menu
- Scope mailbox mobile CSS rules to .mailbox-modal to avoid global style bleed
- Refine mobile mailbox spacing, tab sizing, and minimum agent panel height for better small-screen usability
- Add flex-column base layout for .mailbox-modal and make .mailbox-content grow/scroll correctly
- Introduce a dedicated <=768px mailbox mobile CSS section for header, tabs, detail view, and FAB spacing
- Add MailboxModal regression tests that assert required CSS rules and detail-view structural hooks
- Increase batch GitHub issue import route test timeout to 30s for slower retry paths in CI