docs: add Claude AI assistant rules and configuration

Add comprehensive rule documentation for AI-assisted development covering
authentication surfaces, outbound-call safety invariants, and other project
conventions to guide Claude's understanding of critical system behaviors.

dashboard/package.json

@@ -15,6 +15,7 @@
     "@sveltejs/vite-plugin-svelte": "^5.0.3",
     "@tailwindcss/vite": "^4.1.3",
     "@types/node": "^25.8.0",
+    "daisyui": "^5.0.0",
     "svelte": "^5.25.3",
     "svelte-check": "^4.1.4",
     "tailwindcss": "^4.1.3",