fix: hide tree-sitter AST kind changes for source code (only show for schema protocols)

346346 								{@const removedGroups = groupVertices(sd.removedVertices, file.path)}
347347 								{@const addedGroups = groupVertices(sd.addedVertices, file.path)}
348348 								<div class="mb-3 space-y-2">
349-									<!-- Kind changes - grouped by scope, each clickable -->
350-									{#if sd.kindChanges.length > 0}
351-										{@const namedKindChanges = sd.kindChanges.filter(kc => !shortVertex(kc.vertexId).startsWith('$'))}
352-										{@const internalKindCount = sd.kindChanges.length - namedKindChanges.length}
353-										{@const kindByScope = groupKindChanges(namedKindChanges)}
349+									<!-- Kind changes: only show changes to named program elements.
350+								     Internal AST reshuffling is filtered out. -->
351+									{#if sd.kindChanges.filter(kc => {
352+										const name = shortVertex(kc.vertexId);
353+										if (name.startsWith('$') || name.includes('/')) return false;
354+										if (kc.oldKind.includes('_') && kc.newKind.includes('_')) return false;
355+										return true;
356+									}).length > 0}
357+										{@const meaningfulKindChanges = sd.kindChanges.filter(kc => {
358+											const name = shortVertex(kc.vertexId);
359+											if (name.startsWith('$') || name.includes('/')) return false;
360+											if (kc.oldKind.includes('_') && kc.newKind.includes('_')) return false;
361+											return true;
362+										})}
363+										{@const kindByScope = groupKindChanges(meaningfulKindChanges)}
354364 										<details class="mb-2 rounded-md border border-amber-500/20">
355365 											<summary class="cursor-pointer px-3 py-2 text-xs font-semibold uppercase tracking-wider text-amber-400 hover:bg-amber-500/5">
356-												◆ Type changes ({namedKindChanges.length}{internalKindCount > 0 ? ` + ${internalKindCount} internal` : ''})
366+												◆ Type changes ({meaningfulKindChanges.length})
357367 											</summary>
358368 											<div class="space-y-0.5 px-2 pb-2">
359369 												{#each kindByScope as group (group.scope)}