Initial monorepo setup with npm workspaces and dual TypeScript configuration

- Set up npm workspaces for three packages: pi-tui, pi-agent, and pi (pods)
- Implemented dual TypeScript configuration:
  - Root tsconfig.json with path mappings for development and type checking
  - Package-specific tsconfig.build.json for clean production builds
- Configured lockstep versioning with sync script for inter-package dependencies
- Added comprehensive documentation for development and publishing workflows
- All packages at version 0.5.0 ready for npm publishing

packages/tui/test/demo.ts

@@ -0,0 +1,98 @@
+#!/usr/bin/env node
+
+import {
+	CombinedAutocompleteProvider,
+	Container,
+	MarkdownComponent,
+	TextComponent,
+	TextEditor,
+	TUI,
+} from "../src/index.js";
+
+// Create TUI manager
+const ui = new TUI();
+ui.configureLogging({
+	enabled: true,
+	logLevel: "debug",
+	logFile: "tui-debug.log",
+});
+
+// Create a chat container that will hold messages
+const chatContainer = new Container();
+const editor = new TextEditor();
+
+// Set up autocomplete with slash commands
+const autocompleteProvider = new CombinedAutocompleteProvider(
+	[
+		{ name: "clear", description: "Clear chat history" },
+		{ name: "clear-last", description: "Clear last message" },
+		{ name: "exit", description: "Exit the application" },
+	],
+	process.cwd(),
+);
+editor.setAutocompleteProvider(autocompleteProvider);
+
+// Add components to UI
+ui.addChild(new TextComponent("Differential Rendering TUI"));
+ui.addChild(chatContainer);
+ui.addChild(editor);
+
+// Set focus to the editor (index 2)
+ui.setFocus(editor);
+
+// Test with Claude's multiline text
+const testText = `Root level:
+- CLAUDE.md
+- README.md
+- biome.json
+- package.json
+- package-lock.json
+- tsconfig.json
+- tui-debug.log
+
+Directories:
+- \`data/\` (JSON test files)
+- \`dist/\` 
+- \`docs/\` (markdown documentation)
+- \`node_modules/\`
+- \`src/\` (TypeScript source files)`;
+
+// Pre-fill the editor with the test text
+editor.setText(testText);
+
+// Handle editor submissions
+editor.onSubmit = (text: string) => {
+	text = text.trim();
+
+	if (text === "/clear") {
+		chatContainer.clear();
+		ui.requestRender();
+		return;
+	}
+
+	if (text === "/clear-last") {
+		const count = chatContainer.getChildCount();
+		if (count > 0) {
+			chatContainer.removeChildAt(count - 1);
+			ui.requestRender();
+		}
+		return;
+	}
+
+	if (text === "/exit") {
+		ui.stop();
+		return;
+	}
+
+	if (text) {
+		// Create new message component and add to chat container
+		const message = new MarkdownComponent(text);
+		chatContainer.addChild(message);
+
+		// Manually trigger re-render
+		ui.requestRender();
+	}
+};
+
+// Start the UI
+ui.start();