add LLM-based enterprise lead scoring and auto-replies

Extract delivery logic from the enterprise route into a dedicated
module that grades inquiries via the Zen responses API, falls back
to simple regex scoring on failure, and sends templated auto-replies
for generic and procurement-blocked leads.

Made-with: Cursor

packages/console/app/package.json

@@ -11,6 +11,7 @@
     "start": "vite start"
   },
   "dependencies": {
+    "@ai-sdk/openai": "2.0.89",
     "@cloudflare/vite-plugin": "1.15.2",
     "@ibm/plex": "6.4.1",
     "@jsx-email/render": "1.1.1",
@@ -26,6 +27,7 @@
     "@solidjs/router": "catalog:",
     "@solidjs/start": "catalog:",
     "@stripe/stripe-js": "8.6.1",
+    "ai": "catalog:",
     "chart.js": "4.5.1",
     "nitro": "3.0.1-alpha.1",
     "solid-js": "catalog:",