Add Codex plan mode draft features

packages/app/src/utils/tool-call-detail-state.ts

@@ -51,6 +51,8 @@ export function hasMeaningfulToolCallDetail(detail: ToolCallDetail | undefined):
       );
     case "plain_text":
       return Boolean(detail.label || detail.text);
+    case "plan":
+      return detail.text.trim().length > 0;
     case "unknown":
       return hasMeaningfulUnknownValue(detail.input) || hasMeaningfulUnknownValue(detail.output);
   }

packages/app/src/utils/tool-call-icon.ts

@@ -24,6 +24,7 @@ const TOOL_DETAIL_ICONS: Record<ToolCallDetail["type"], ToolCallIconComponent> =
   worktree_setup: SquareTerminal,
   sub_agent: Bot,
   plain_text: Wrench,
+  plan: Brain,
   unknown: Wrench,
 };