Vacuum: holding Shift shows the blow-everything mix on the card and in the bag (t19)

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

tasks/t19.md

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+---
+id: t19
+status: Review
+order: 4
+priority: P3
+created: 2026-10-24
+updated: 2026-10-24T15:59:05Z
+title: vacuum blow all visual
+report: |
+  (agent) With the Vacuum, holding Shift (while not flying) now shows what Shift + right click
+  will blow before you click: the card's Blow out line reads "Everything · mix of N", every bag
+  row that will be blown lights up, and the swatches by the cursor show the whole mix. Let go of
+  Shift and it goes back to your chosen material. It also shows while you're blowing everything.
+  To check: with a few things in the bag and one chosen to blow, hold Shift and watch the card and
+  bag; then hold Shift with WASD and see it doesn't change (Shift is boost then).
+---
+
+## Context
+
+- (owner's answers, 2026-10-24) The description typed in kandown was lost. Chosen: "Bag rows light up" (while Shift is held, or while blowing everything, every row that will be blown lights up in the bag) and "Card shows it while Shift is held" (the Blow out line reads "Everything · mix of N" and the swatches by the cursor show the whole mix, before you click).
+
+## Subtasks
+
+- [x] Card shows "Everything · mix of N" while Shift is held
+- [x] Bag rows that will be blown light up