feat(packages/tui-and-shared-tooling-primitives): added TUI terminal support

- Made `Component.invalidate` optional in `packages/tui/src/tui.ts` and callsites.
- Added `iconOverride` support to status-line rendering in `status-line.ts`.
- Added `borderColor` and `framedBlock()` primitives in `output-block.ts` for framed output styling.
- Adjusted `renderOutputBlock()` to draw a continuous border when no header text is present.
- Added terminal checkpoint-reconciliation tests in `submit-checkpoint-reconcile.test.ts` for pinned-tail behavior.

packages/coding-agent/src/modes/setup-wizard/wizard-overlay.ts

@@ -82,7 +82,7 @@ export class SetupWizardComponent implements Component {
 	}
 
 	invalidate(): void {
-		this.#activeScene?.invalidate();
+		this.#activeScene?.invalidate?.();
 	}
 
 	handleInput(data: string): void {