Put the text and boxes of the interface on device pixels

On a screen scaled to 125 % or 150 % the editor looked soft beside
a page the browser draws itself. The layout counts in whole CSS
pixels, and most of those fall between two device pixels there. The
GPU averages both: text loses its edges, and a 1 px line becomes a
pixel and a half of mixed colour. Now text and boxes are rounded to
device pixels, and a line is one device pixel wide.

- ui/pixelGrid.ts holds the rule. crispText() makes a text with
  Pixi's roundPixels, crisp() does the same for a Graphics of
  upright boxes, and hairline() is the width of one device pixel.
- Every text of the interface is made with crispText() instead of
  new Text().
- crisp() only rounds where the scale is not a whole number. At
  100 % and 200 % nothing changes.
- drawControlBox, drawHeaderBar and drawSectionBand draw their
  lines a hairline wide and flush with the edge. The widgets that
  draw lines of their own do the same.
- Two bands share exactly the line they draw, and a column still
  ends on a whole pixel.
- The stage is nudged by 1/32 px where the scale is not whole. At
  150 % every odd pixel is an exact half, and without the nudge one
  band came out a row shorter than its neighbours.
- Curves, icons and everything of the game stay unrounded. Rounding
  their points would bend them.
- The harness takes deviceScaleFactor as an option, and the hooks
  deviceColumn, edgeContrast and pixelGrid read the frame as the
  screen gets it.

Not in here: the subpixel smoothing a browser gives its own text.
Pixi draws a text into a transparent picture first, and there only
greyscale smoothing is possible.

Measured at 150 %, edge contrast before and after: top bar 31.5 to
47.8, the lists on the left 68.6 to 86.4, inspector 27.6 to 38.4.
At 100 % it is 46.5, 90.1 and 37.9, and the picture there is the
same as before pixel for pixel, apart from the fps display.

Tests:
- Gate on melektaus-atx: 206 files, 3114 tests (3104 + 10), exit 0
- Full run on melektaus-atx: 1655 of 1656 checks passed, smokes
  24/19/21. The one that failed was a condition of the new step
  62 itself: it scrolled an inspector that had nothing to scroll.
  The step now makes the window lower for that reading.
- e2e 61,62 after that fix: 14 checks. The full run was not
  repeated, and CI is switched off for now.
- Ten unit tests, nine in tests/ui/pixel-grid.test.ts
- Eight e2e checks in the new step 62, which runs at 150 %
- Eleven unit counter-probes fail tests
- Four browser counter-probes fail their checks. They ran before
  the fix to step 62 and were not repeated for it.
- Screenshots looked at for 125 % and 150 %

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

src/editor/graph/NodeView.ts

@@ -1,4 +1,4 @@
-import { CanvasTextMetrics, Graphics, Rectangle, Text } from 'pixi.js';
+import { CanvasTextMetrics, Graphics, Rectangle, type Text } from 'pixi.js';
 import {
   asNumber,
   asString,
@@ -20,7 +20,16 @@ import { FIRST_TILE_LAYER } from '../../core/model/liveTilemap';
 import type { Project } from '../../core/model/Project';
 import { isList, type PropertyValue } from '../../core/model/Properties';
 import type { PropertyDef } from '../../core/properties/PropertySchema';
-import { formatNumber, Theme, textStyle, type TextStyleToken, toHex, truncate, Widget } from '../../ui';
+import {
+  formatNumber,
+  Theme,
+  textStyle,
+  type TextStyleToken,
+  toHex,
+  truncate,
+  Widget,
+  crispText,
+} from '../../ui';
 import { keyLabel, referenceLabel } from '../inspector/fieldFactory';
 import { collapsedNodeWidth } from './folding';
 
@@ -275,7 +284,7 @@ export class NodeView extends Widget {
     for (const [key, value] of this.liveTexts) {
       const slot = this.valueSlots.get(key);
       if (!slot || slot.right - slot.left < 12) continue;
-      const text = new Text({ text: truncate(value, style, slot.right - slot.left), style });
+      const text = crispText({ text: truncate(value, style, slot.right - slot.left), style });
       text.position.set(slot.right - text.width, slot.top);
       this.addChild(text);
       this.valueTexts.set(key, text);
@@ -339,7 +348,7 @@ export class NodeView extends Widget {
       align: 'left' | 'right' = 'left',
       maxWidth = NODE_WIDTH - PAD * 2,
     ) => {
-      const node = new Text({ text: truncate(text, textStyle(style), maxWidth), style: textStyle(style) });
+      const node = crispText({ text: truncate(text, textStyle(style), maxWidth), style: textStyle(style) });
       node.position.set(align === 'left' ? x : x - node.width, y);
       this.addChild(node);
       this.texts.push(node);