The top-left run-state is now a pure status indicator (green=ready, red=running)
and no longer handles clicks. Stopping the current turn moves to the send key:
while the agent is running the send button turns into a red stop square — clicking
it cancels the current turn (ChatGPT/Claude style). The Enter key still submits, so
"type while running + Enter" keeps lyx's interrupt-and-resend behavior (#5) intact.
- setBusy toggles .is-stop on the send button + aria-label (stop/send)
- send click: cancelPrompt() when busy, submitInput() otherwise
- remove run-toggle click handler + .stopped state; .run-state.busy goes red
- .send.is-stop: red bg + white rounded square (hide arrow); i18n act.send
- cache bust styles v19->20, app v25->26
dd3xp
57cf4d6632
