feat(core): register mcp prompt commands

packages/client/src/generated/types.ts

@@ -2564,6 +2564,7 @@ export type CommandsListOutput = {
     readonly description?: string
     readonly agent?: string
     readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string }
+    readonly source?: "command" | "mcp" | "skill"
     readonly subtask?: boolean
   }>
 }