feat: communication spine — gateway, TUI, Discord (#61)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

packages/cli/src/cli.ts

@@ -0,0 +1,28 @@
+#!/usr/bin/env node
+
+import { Command } from 'commander';
+
+const program = new Command();
+
+program.name('mosaic').description('Mosaic Stack CLI').version('0.0.0');
+
+program
+  .command('tui')
+  .description('Launch interactive TUI connected to the gateway')
+  .option('-g, --gateway <url>', 'Gateway URL', 'http://localhost:4000')
+  .option('-c, --conversation <id>', 'Resume a conversation by ID')
+  .action(async (opts: { gateway: string; conversation?: string }) => {
+    // Dynamic import to avoid loading React/Ink for other commands
+    const { render } = await import('ink');
+    const React = await import('react');
+    const { TuiApp } = await import('./tui/app.js');
+
+    render(
+      React.createElement(TuiApp, {
+        gatewayUrl: opts.gateway,
+        conversationId: opts.conversation,
+      }),
+    );
+  });
+
+program.parse();