fix: some bugs

lib/commit-message.ts

@@ -26,7 +26,7 @@ export function buildCommitMessage(
 
   const lines: string[] = [title, '']
 
-  // Model section — only show if changed or new
+  // Model section — show status for new, changed, or unchanged
   const modelChange = fileChanges.get(modelFilename.toLowerCase())
   if (modelChange === 'new') {
     lines.push('📦 Model')
@@ -34,6 +34,9 @@ export function buildCommitMessage(
   } else if (modelChange === 'changed') {
     lines.push('📦 Model')
     lines.push(`  🔄 ${modelFilename}${compressed ? ' (compressed)' : ''}`)
+  } else if (modelChange === 'unchanged') {
+    lines.push('📦 Model')
+    lines.push(`  ↔️ ${modelFilename} (inchange)`)
   }
 
   // Textures section — only show lines that have changes