Trim needless comments and fix the picker width

Remove comments that only restate the code, keeping the section banners
and the notes that carry a reason, a measured fact or an external
contract.

ButtonOptions.width claimed to be a fixed width but only set minWidth,
so the Graph and Texture pickers grew with the name they showed. It is
now what it promises, with a separate minWidth for the buttons that have
two forms. Narrow buttons shrink their padding, otherwise a 24px icon
button had 8px left for its glyph and truncate dropped it entirely.

__gm.labelsDropped() guards that class: the overflow guard only saw text
that was too wide, never a label truncated to nothing.

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

src/editor/inspector/frameSection.ts

@@ -11,7 +11,6 @@ import { createFieldRow, type FieldHandlers, labelledRow } from './fieldFactory'
 import { addGap, addNote, addTitle, type InspectorHost } from './host';
 import { previewingHandlers } from './previewHandlers';
 
-/** The components of the rectangle, in the order they are shown. */
 const RECT_COMPONENTS = [
   { key: 'x', label: 'X' },
   { key: 'y', label: 'Y' },
@@ -19,11 +18,7 @@ const RECT_COMPONENTS = [
   { key: 'h', label: 'Height' },
 ] as const;
 
-/**
- * Structure-defining facts of a frame selection: none. A frame is a name and four numbers
- * whatever texture it was cut from, so the rows never differ – only the frame disappearing
- * can force a rebuild, and that is what `refreshFrameSection` reports.
- */
+/** Structure-defining facts of a frame selection: none – only the frame disappearing rebuilds. */
 export function frameSignature(project: Project, assetId: string, frameId: string): string {
   return currentFrame(project, assetId, frameId) ? 'frame' : 'missing';
 }
@@ -37,8 +32,8 @@ export function buildFrameSection(host: InspectorHost, assetId: string, frameId:
   addTitle(host, 'TEXTURE FRAME');
   host.nameField = new TextField(frame.name, {
     onChange: (name) => {
-      // Like an asset name. The command rejects a blank name by itself; what it cannot do is
-      // put the old text back into the field, which is why an empty one is not sent at all.
+      // The command rejects a blank name but cannot put the old text back into the field,
+      // so an empty one is not sent at all.
       if (name.trim()) host.state.execute(new RenameFrameCommand(assetId, frameId, name.trim()));
       else host.nameField?.setValue(frame.name);
     },
@@ -81,8 +76,7 @@ function rectRow(
 ): void {
   const row = createFieldRow(
     host,
-    // `decimals: 0` is honest here and only here in the inspector: `normalizeFrameRect` rounds
-    // every value that reaches the model, so the field never shortens a number it is holding.
+    // `decimals: 0` is safe here: `normalizeFrameRect` rounds every value that reaches the model.
     { key, label, kind: 'number', default: 0, step: 1, decimals: 0 },
     value,
     rectHandlers(host, assetId, frameId, key),
@@ -93,13 +87,9 @@ function rectRow(
 
 /**
  * The whole rectangle with one component replaced; the other three are read from the model at
- * that moment, so a frame dragged in the Texture tab in between is not undone by typing into a
- * field beside it.
- *
- * Normalising here as well as in the command is not a duplicate rule but the same one applied
- * to the *preview*: an un-normalised preview would draw the frame off the sheet on the way
- * through a scrub, and a half-typed "1" of "16" would jump it to the corner. Because it is the
- * same function the command uses, what is previewed is exactly what is committed.
+ * that moment, so a frame dragged in the Texture tab in between is not undone. Normalising the
+ * preview with the same function the command uses keeps it on the sheet and identical to what
+ * is committed.
  */
 function rectHandlers(
   host: InspectorHost,
@@ -124,9 +114,8 @@ function rectHandlers(
 }
 
 /**
- * The frame is looked up inside the selected texture rather than by its id alone: the
- * selection names both, and honouring both keeps a selection left over from a deleted texture
- * from editing whichever frame later inherits the id.
+ * Looked up inside the selected texture rather than by frame id alone, so a selection left over
+ * from a deleted texture cannot edit whichever frame later inherits the id.
  */
 function currentFrame(project: Project, assetId: string, frameId: string): TextureFrame | undefined {
   return currentTexture(project, assetId)?.frames.find((f) => f.id === frameId);