feat: migrate AI to llama and use local db

utils/ai/tool.ts

@@ -25,20 +25,25 @@ export const newsletterTool: BaseTool = {
   name: 'NewsletterTool' as const,
   input_schema: {
     type: 'object' as const,
-    description: 'Newsletter',
+    description:
+      'Generate a tech newsletter with title, content, and focus sections',
     properties: {
       title: {
         type: 'string' as const,
-        description: 'The title of the newsletter'
+        description:
+          'The title of the newsletter (40-50 characters, capturing key themes)'
       },
       content: {
         type: 'string' as const,
-        description: 'The main content of the newsletter'
+        description:
+          'The main content of the newsletter (300-400 words, HTML formatted with paragraph tags and links)'
       },
       focus: {
         type: 'string' as const,
-        description: 'The text of the focus segment'
+        description:
+          'Forward-looking assessment of key developments and trends'
       }
-    }
+    },
+    required: ['title', 'content', 'focus'] as const
   }
 } as const;