Vacuum menu on F replaces the pick-up modes (t16)

Pick-up takes everything unless something is marked; F with the Vacuum
(when nothing in reach can be used) or the card chips open a menu with
pick-up and blow toggles per material. The bag rows lose their buttons.

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

src/ui/previews.js

@@ -153,9 +153,9 @@ function drawPreviews() {
     if (t === 'vacuum') {
       // what the right button would blow, next to the cursor; what the left is sucking, while it sucks
       const sz = Math.max(6, zp * 1.6), qx = p.x + (r + 1.2) * zp, qy = p.y - (r + 1.2) * zp;
-      const swatches = GAME.lmb && GAME.pickMode === 'first' && GAME.vacFilter > 0 ? [GAME.vacFilter] : GAME.lmb && GAME.pickMode === 'marked' && GAME.vacFilter >= 0 ? [...GAME.collect] : blowList();
+      const swatches = GAME.lmb ? GAME.vacFilter >= 0 && GAME.collect.size ? [...GAME.collect] : [] : blowList();
       swatches.slice(0, 4).forEach((m, k) => { ctx.fillStyle = rgbOf(m); ctx.fillRect(qx + k * (sz + 2), qy, sz, sz); });
-      if (blowing || (GAME.lmb && GAME.vacFilter)) {
+      if (blowing || GAME.lmb) {
         // faint line from the nozzle: the path the grains take
         const c = worldToScreenPx(bot.x + bot.w / 2, bot.y + bot.h / 2);
         ctx.strokeStyle = blowing ? 'rgba(255,210,122,0.22)' : 'rgba(92,186,166,0.22)'; ctx.lineWidth = Math.max(1, zp * (r + 0.5) * 0.6);