fix: support builds[].version metadata structure in update-gh

Packages use version/release fields nested inside builds[] entries
rather than at the top level of metadata.yaml.

tools/update-gh

@@ -293,7 +293,11 @@ def update_package_metadata(package_dir: Path, new_version: str, dry_run: bool =
         with open(metadata_file, 'r') as f:
             metadata = yaml.safe_load(f)
 
-        old_version = metadata.get('version', 'unknown')
+        builds = metadata.get('builds', [])
+        if builds and isinstance(builds, list) and builds[0].get('version') is not None:
+            old_version = str(builds[0].get('version', 'unknown'))
+        else:
+            old_version = metadata.get('version', 'unknown')
         logger.info(f"Updating {metadata.get('name', 'unknown')} from {old_version} to {new_version}")
 
         if dry_run:
@@ -301,8 +305,15 @@ def update_package_metadata(package_dir: Path, new_version: str, dry_run: bool =
             return True
 
         # Update version in metadata and reset release to 1
-        metadata['version'] = new_version
-        metadata['release'] = 1
+        # Support both top-level version and builds[].version
+        builds = metadata.get('builds', [])
+        if builds and isinstance(builds, list) and builds[0].get('version') is not None:
+            for build in builds:
+                build['version'] = new_version
+                build['release'] = 1
+        else:
+            metadata['version'] = new_version
+            metadata['release'] = 1
 
         # Write updated metadata
         with open(metadata_file, 'w') as f:
@@ -340,7 +351,6 @@ def check_package_updates(package_dir: Path, dry_run: bool = False) -> bool:
             metadata = yaml.safe_load(f)
 
         package_name = metadata.get('name', package_dir.name)
-        current_version = metadata.get('version')
         github_repo = metadata.get('github')
         claude_ai = metadata.get('claude_ai', False)
 
@@ -348,6 +358,13 @@ def check_package_updates(package_dir: Path, dry_run: bool = False) -> bool:
             logger.debug(f"Package {package_name} has no GitHub repo or claude_ai configured")
             return True
 
+        # Support both top-level version and builds[].version
+        builds = metadata.get('builds', [])
+        if builds and isinstance(builds, list) and builds[0].get('version'):
+            current_version = str(builds[0].get('version'))
+        else:
+            current_version = metadata.get('version')
+
         if not current_version:
             logger.warning(f"Package {package_name} has no version in metadata")
             return False