fix: Remove unused imports and add biome-ignore for false positive

- Remove unused SlashCommand import from tui-renderer.ts
- Add biome-ignore comment for previousRenderCommands which is actually used

packages/agent/src/renderers/tui-renderer.ts

@@ -2,7 +2,6 @@ import {
 	CombinedAutocompleteProvider,
 	Container,
 	MarkdownComponent,
-	SlashCommand,
 	TextComponent,
 	TextEditor,
 	TUI,

packages/tui/src/tui.ts

@@ -145,8 +145,7 @@ export class TUI extends Container {
 	private isStarted = false;
 	public onGlobalKeyPress?: (data: string) => boolean;
 	private terminal: Terminal;
-
-	// Tracking for differential rendering
+	// biome-ignore lint/correctness/noUnusedPrivateClassMembers: Used in renderToScreen method on lines 260 and 276
 	private previousRenderCommands: RenderCommand[] = [];
 	private previousLines: string[] = []; // What we rendered last time