Tool messages show as toasts, the card status line is gone (t27)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks/t27.md

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+---
+id: t27
+status: Review
+order: 4
+priority: P3
+created: 2026-10-24
+updated: 2026-10-24T19:14:46Z
+title: add toast for vac/blow tool
+report: |
+  (agent) Every tool's messages now show as toasts at the top of the screen; the red line in the
+  tool card is gone. Errors have a red edge, info messages a teal one. Holding a button that keeps
+  repeating a message (blowing with nothing selected, the Igniter out of reach) keeps one toast up
+  instead of piling them. Please check the toasts are readable and don't get in the way.
+---
+
+## Subtasks
+
+- [ ] when blowing without any items selected there is a message in red in the box on the top left, instead move it to a toast.
+- [ ] same for any other messages from the tool
+- [ ] s
+- [x] Every tool's messages show as toasts, and the red line in the tool card goes away
+- [x] A message that repeats while a button is held refreshes one toast instead of stacking up