mikkeli d965031a56 Keep dropped-out signals as MISSING rows; clear the nav bar in the mark sheet ...

A signal absent from the latest state now stays listed (from the last
envelope seen on this gateway) and renders as missing, distinct from
null and stale as BOUNDARY.md requires; rows no longer jump.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz

2026-10-11 04:01:05 +09:00

..

boundary_test.dart

Keep dropped-out signals as MISSING rows; clear the nav bar in the mark sheet

2026-10-11 04:01:05 +09:00