Add unit tests for skill capabilities, skill planner, and UV setup

- Implement tests for random ID generation, ensuring preference for crypto.randomUUID.
- Create tests for runtime context capabilities, validating the injection of enabled skill capabilities.
- Add tests for skill capability parsing, including classification and command example extraction.
- Introduce tests for the skill planner, verifying tool call planning based on user requests and attachment requirements.
- Establish tests for UV setup, ensuring proper handling of Python installation scenarios and environment checks.

electron/gateway/rpc-dispatch.ts

@@ -72,7 +72,10 @@ export function dispatchGatewayRpcMethod(
     case 'skills.update':
       return {
         handled: true,
-        result: skillHandlers.handleSkillsUpdate(params),
+        result: skillHandlers.handleSkillsUpdate(
+          params as GatewayRpcParams['skills.update'],
+          broadcast,
+        ),
       };
     case 'skills.install':
       return {