Add /thinking command and improve TUI UX

- Add /thinking slash command with autocomplete for setting reasoning levels (off, minimal, low, medium, high)
- Fix Ctrl+C behavior: remove hardcoded exit in TUI, let focused component handle it
- Add empty lines before and after tool execution components for better visual separation
- Fix stats rendering: display stats AFTER tool executions complete (matches web-ui behavior)
- Remove "Press Ctrl+C again to exit" message, show "(esc to interrupt)" in loader instead
- Add bash tool abort signal support with immediate SIGKILL on interrupt
- Make Text and Markdown components return empty arrays when no actual text content
- Add setCustomBgRgb() method to Markdown for dynamic background colors

packages/coding-agent/src/main.ts

@@ -106,7 +106,7 @@ Guidelines:
 Current directory: ${process.cwd()}`;
 
 async function runInteractiveMode(agent: Agent, _sessionManager: SessionManager): Promise<void> {
-	const renderer = new TuiRenderer();
+	const renderer = new TuiRenderer(agent);
 
 	// Initialize TUI
 	await renderer.init();
@@ -116,6 +116,9 @@ async function runInteractiveMode(agent: Agent, _sessionManager: SessionManager)
 		agent.abort();
 	});
 
+	// Render any existing messages (from --continue mode)
+	renderer.renderInitialMessages(agent.state);
+
 	// Subscribe to agent events
 	agent.subscribe(async (event) => {
 		// Pass all events to the renderer