security:
- Fix bare open(sentinel, 'w').close() file descriptor leak; use
context manager instead
- Store requesting username in _diag_jobs at creation time; return 403
from api_diagnose_poll if the polling user does not match the job owner
accessibility:
- Add aria-live="polite" aria-atomic="true" to .status-chips container
so screen readers announce critical/warning count changes on refresh
- Add aria-controls="events-table-wrap" to critical and warning stat
cards so assistive tech knows these buttons control the events table
- Add aria-hidden sync to topology setCollapsed() — hidden topology
content is now removed from the accessibility tree when collapsed,
preventing keyboard focus from entering invisible elements
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
jaredandClaude Sonnet 4.6
088ba789c9