rtasks fetch calls were missing Authorization Bearer headers, causing 401s
on private/permissioned spaces. Added authHeaders() helper using encryptid-token
from localStorage (matching pattern in folk-feed, folk-multisig-email, etc.).
Also includes: due date field, task detail panel, search/filter, column editor,
board PATCH endpoint, and canvas toolbar repositioned to bottom-right corner
(collapsed wrench icon on all screen sizes, panel opens leftward).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
c590bacc40