- relay: raise /api/collab-attachments + /api/attachments/upload POST
size limit from 256KB to 15MB, matching /api/attachments. Previous
limit silently dropped any collab image >~100KB as 413 (envelope
overhead pushes even modest JPEGs past the cap), leaving puller
clients with broken <img src="uploads/..."> references.
- oumta-dashboard: centre overview tiles, bump value font to 56px,
introduce .oumta-fail alarm state that paints the full tile red with
white text. Toggled from JS for cluster state=down, workloads down
>0, and open incidents >0. Fail colour uses --t-danger so it stays
in sync with the "unavailable" workload labels.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>