fix(model-availability): honor connected providers for fallback

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/shared/agent-tool-restrictions.ts

@@ -22,6 +22,7 @@ const AGENT_RESTRICTIONS: Record<string, Record<string, boolean>> = {
     edit: false,
     task: false,
     delegate_task: false,
+    call_omo_agent: false,
   },
 
   metis: {