fix(cli): improve changelog release handling and TypeScript compatibility

ts/mod_format/classes.diffreporter.ts

@@ -42,9 +42,10 @@ export class DiffReporter {
         change.content,
       );
     } catch (error) {
+      const errorMessage = error instanceof Error ? error.message : String(error);
       logger.log(
         'error',
-        `Failed to generate diff for ${change.path}: ${error.message}`,
+        `Failed to generate diff for ${change.path}: ${errorMessage}`,
       );
       return null;
     }