Assigning a task to opencode, hermes, or gemini now actually runs it:
creating or PATCHing a task with one of those assignees moves it to
in_progress and hands the title+body to execute_agent() in a
background thread. On completion the agent's response is appended as
a task comment and the task is marked done (success) or blocked
(timeout/error), matching the existing block/complete state machine.
Adds POST /api/kanban/tasks/{id}/dispatch for manual dispatch/retry,
and makes the previously-stubbed POST /api/kanban/dispatch actually
scan todo/ready tasks with an agent assignee and dispatch each one.
Dashboard: the assignee field is now a select of the three agents,
the task detail modal shows an activity log of past agent runs and a
Dispatch button, and polls every 3s while a task is in_progress. Also
fixed a pre-existing bug where the detail modal read a nonexistent
kanbanData.tasks field (the board API only returns columns), so
clicking a card silently did nothing before this fix.
b11da78097