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/core/graph/Graph.ts

@@ -1,9 +1,6 @@
 import type { PropertyBag } from '../model/Properties';
 
-/**
- * Port data types. `exec` carries control flow (Blueprint-style white arrows); the others
- * carry values. `any` accepts every value type (variables, logging).
- */
+/** `exec` carries control flow, the others values; `any` accepts every value type. */
 export type PortType = 'exec' | 'number' | 'boolean' | 'string' | 'object' | 'any';
 
 export interface PortRef {
@@ -12,9 +9,8 @@ export interface PortRef {
 }
 
 /**
- * One node of a behavior graph. `type` names a NodeDef in the registry; `params` holds
- * the node's own settings (e.g. which key) and inline values of unconnected data inputs,
- * both keyed by the param / port key.
+ * `type` names a NodeDef in the registry; `params` holds both the node's own settings and the
+ * inline values of unconnected data inputs, keyed by param or port key.
  */
 export interface GraphNode {
   id: string;
@@ -24,7 +20,6 @@ export interface GraphNode {
   params: PropertyBag;
 }
 
-/** A connection from an output port to an input port. */
 export interface GraphEdge {
   id: string;
   from: PortRef;
@@ -49,17 +44,14 @@ export function edgesInto(graph: Graph, nodeId: string, port: string): GraphEdge
   return graph.edges.filter((e) => e.to.node === nodeId && e.to.port === port);
 }
 
-/** Edges leaving one output port. */
 export function edgesOutOf(graph: Graph, nodeId: string, port: string): GraphEdge[] {
   return graph.edges.filter((e) => e.from.node === nodeId && e.from.port === port);
 }
 
-/** Every edge touching a node (used when removing it). */
 export function edgesOfNode(graph: Graph, nodeId: string): GraphEdge[] {
   return graph.edges.filter((e) => e.from.node === nodeId || e.to.node === nodeId);
 }
 
-/** Whether a value may flow from an output of type `from` into an input of type `to`. */
 export function portsCompatible(from: PortType, to: PortType): boolean {
   if (from === 'exec' || to === 'exec') return from === to;
   return from === to || from === 'any' || to === 'any';