Initial commit: Chat-to-diagram v1.0

- Chat interface with OpenAI GPT integration
- Automatic diagram generation from text descriptions
- Tldraw canvas with Dagre layout engine
- REST API instead of WebSocket approach

🤖 Generated with Claude Code (https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tailwind.config.ts

@@ -0,0 +1,19 @@
+import type { Config } from 'tailwindcss'
+
+const config: Config = {
+  content: [
+    './src/pages/**/*.{js,ts,jsx,tsx,mdx}',
+    './src/components/**/*.{js,ts,jsx,tsx,mdx}',
+    './src/app/**/*.{js,ts,jsx,tsx,mdx}',
+  ],
+  theme: {
+    extend: {
+      colors: {
+        background: 'var(--background)',
+        foreground: 'var(--foreground)',
+      },
+    },
+  },
+  plugins: [],
+}
+export default config