Added a `seeded` flag to Automerge doc metadata across 6 modules
(rcal, rnotes, rtasks, rvote, rbnb, rvnb). Once demo data is seeded,
deleting all content no longer triggers re-seeding on next page load.
Also removed rcal's per-request seedDemoIfEmpty() call from the route
handler — onInit + seedTemplate already handle initial seeding.
fix(canvas): prevent bulk delete dialog from stacking
The Delete key repeat was creating multiple overlays, making the dialog
appear unclosable. Added a guard to prevent duplicate dialogs, and
Escape key support to dismiss.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
4b08a02851