Add line count to paste markers

- Paste markers now show line count: [paste #1 +50 lines]
- Update replacement logic to handle both old and new marker formats
- Provides better visibility into paste size

packages/tui/test/chat-debug.ts

@@ -0,0 +1,48 @@
+/**
+ * Debug version of chat-simple with logging
+ */
+
+import fs from "fs";
+import { ProcessTerminal } from "../src/terminal.js";
+import { Input, Text, TUI } from "../src/tui-new.js";
+
+// Clear debug log
+fs.writeFileSync("debug.log", "");
+
+function log(msg: string) {
+	fs.appendFileSync("debug.log", msg + "\n");
+}
+
+// Create terminal
+const terminal = new ProcessTerminal();
+
+// Wrap terminal methods to log
+const originalWrite = terminal.write.bind(terminal);
+const originalMoveBy = terminal.moveBy.bind(terminal);
+
+terminal.write = (data: string) => {
+	log(`WRITE: ${JSON.stringify(data)}`);
+	originalWrite(data);
+};
+
+terminal.moveBy = (lines: number) => {
+	log(`MOVEBY: ${lines}`);
+	originalMoveBy(lines);
+};
+
+// Create TUI
+const tui = new TUI(terminal);
+
+// Create chat container with some initial messages
+tui.addChild(new Text("Welcome to Simple Chat!"));
+tui.addChild(new Text("Type your messages below. Press Ctrl+C to exit.\n"));
+
+// Create input field
+const input = new Input();
+tui.addChild(input);
+
+// Focus the input
+tui.setFocus(input);
+
+// Start the TUI
+tui.start();