fix(coding-agent): clear idle follow-up submissions

closes #3926

packages/coding-agent/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Fixed
 
+- Fixed idle follow-up submission to clear the editor like normal message submission ([#3926](https://github.com/badlogic/pi-mono/issues/3926)).
 - Updated the sandbox extension example lockfile to resolve the vulnerable `lodash-es` transitive dependency ([#3901](https://github.com/badlogic/pi-mono/issues/3901)).
 
 ## [0.70.6] - 2026-04-28

packages/coding-agent/src/modes/interactive/interactive-mode.ts

@@ -3342,6 +3342,7 @@ export class InteractiveMode {
 		}
 		// If not streaming, Alt+Enter acts like regular Enter (trigger onSubmit)
 		else if (this.editor.onSubmit) {
+			this.editor.setText("");
 			this.editor.onSubmit(text);
 		}
 	}