Fix JSON circular reference serialization and use PayloadCMS generated types

- Replace duplicate type definitions with PayloadCMS generated types
- Fix workflow context serialization with safeSerialize() method
- Resolve type mismatches (id: string vs number)
- Update all imports to use PayloadWorkflow type
- Ensure workflow runs are created successfully without serialization errors

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

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

pnpm-lock.yaml

@@ -90,6 +90,9 @@ importers:
       sharp:
         specifier: 0.34.3
         version: 0.34.3
+      tsx:
+        specifier: ^4.20.5
+        version: 4.20.5
       typescript:
         specifier: 5.7.3
         version: 5.7.3
@@ -9617,7 +9620,6 @@ snapshots:
       get-tsconfig: 4.10.1
     optionalDependencies:
       fsevents: 2.3.3
-    optional: true
 
   type-check@0.4.0:
     dependencies: