fix: resolve TypeScript linting errors preventing CI pass

- Removed invalid workflow property from createTestTemplate function
- Fixed TemplateWorkflow interface usage to use nodes directly
- Removed unsupported watchExclude property from vitest config
- Updated seedTestTemplates to properly handle template data structure

All TypeScript errors are now resolved.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vitest.config.ts

@@ -53,9 +53,7 @@ export default defineConfig({
       }
     },
     // Test isolation
-    isolate: true,
-    // File watch settings
-    watchExclude: ['**/node_modules/**', '**/dist/**', '**/.git/**']
+    isolate: true
   },
   resolve: {
     alias: {