Number fields drop trailing zeros: formatNumber still rounds to at most 3 decimals and then removes zeros at the end, so 100.000 reads 100 and 0.500 reads 0.5, everywhere (inspector, graph and shader nodes, duration and fps in the animation and tile tabs); a field's own decimals is now an upper limit, stored values are unchanged, -0 still shows as 0, and the graph's separate integer rule is gone (#172)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/ui/math.ts

@@ -12,13 +12,13 @@ export function centreY(containerHeight: number, itemHeight: number): number {
 export const NUMBER_DECIMALS = 3;
 
 /**
- * Always shows `decimals` places, so a value can never look whole when it is not. A value that
- * rounds to zero never carries a minus sign.
+ * Rounds to `decimals` places and drops trailing zeros: `100`, `0.5`, `9.091`. A value that rounds
+ * to zero never carries a minus sign.
  */
 export function formatNumber(value: number, decimals = NUMBER_DECIMALS): string {
-  const zero = (0).toFixed(decimals);
   const text = value.toFixed(decimals);
-  return text === '-' + zero ? zero : text;
+  const trimmed = text.includes('.') ? text.replace(/\.?0+$/, '') : text;
+  return trimmed === '-0' ? '0' : trimmed;
 }
 
 /** Rounds to `decimals` places, which also removes binary-float noise (0.1 × 3 = 0.30000000000000004). */

src/ui/widgets/NumberField.ts

@@ -9,8 +9,8 @@ export interface NumberFieldOptions extends Omit<TextFieldOptions, 'onInput' | '
   /** Increment per scrubbed pixel and per arrow key, and the grid a scrub snaps to. */
   step?: number;
   /**
-   * Decimal places the value is kept *and* shown at (default `NUMBER_DECIMALS`) – the field rounds
-   * to it, so lowering it drops precision rather than hiding it.
+   * Decimal places the value is kept at and shown with at most (default `NUMBER_DECIMALS`) – the
+   * field rounds to it, so lowering it drops precision rather than hiding it.
    */
   decimals?: number;
   /** Fires continuously while scrubbing or typing a valid number. */