sync: description generation fix - simplified prompt

src/services/database/descriptionService.ts

@@ -4,6 +4,7 @@ import { generateText } from 'ai';
 export interface DescriptionInput {
   title: string;
   content?: string;
+  link?: string;
   metadata?: {
     source?: string;
     channel_name?: string;
@@ -11,11 +12,12 @@ export interface DescriptionInput {
     site_name?: string;
   };
   type?: string;
+  dimensions?: string[];
 }
 
 /**
  * Generate a 280-character description for a knowledge node.
- * The description starts with "This is a..." and identifies the content type.
+ * Contextually grounded - adapts to node type (person, concept, article, etc.)
  */
 export async function generateDescription(input: DescriptionInput): Promise<string> {
   try {
@@ -32,7 +34,7 @@ export async function generateDescription(input: DescriptionInput): Promise<stri
 
     const description = response.text.trim();
 
-    // Ensure it starts with "This is a" and is within limit
+    // Ensure within character limit
     const finalDescription = description.slice(0, 280);
 
     console.log(`[DescriptionService] Generated: "${finalDescription}"`);
@@ -46,41 +48,20 @@ export async function generateDescription(input: DescriptionInput): Promise<stri
 }
 
 function buildDescriptionPrompt(input: DescriptionInput): string {
-  const metadataLines: string[] = [];
+  const lines: string[] = [`Title: ${input.title}`];
 
-  if (input.metadata?.source) {
-    metadataLines.push(`Source: ${input.metadata.source}`);
-  }
-  if (input.metadata?.channel_name) {
-    metadataLines.push(`Channel: ${input.metadata.channel_name}`);
-  }
-  if (input.metadata?.author) {
-    metadataLines.push(`Author: ${input.metadata.author}`);
-  }
-  if (input.metadata?.site_name) {
-    metadataLines.push(`Site: ${input.metadata.site_name}`);
-  }
-  if (input.type) {
-    metadataLines.push(`Type: ${input.type}`);
-  }
+  if (input.link) lines.push(`URL: ${input.link}`);
+  if (input.dimensions?.length) lines.push(`Dimensions: ${input.dimensions.join(', ')}`);
+  if (input.metadata?.channel_name) lines.push(`Channel: ${input.metadata.channel_name}`);
+  if (input.metadata?.author) lines.push(`Author: ${input.metadata.author}`);
+  if (input.metadata?.site_name) lines.push(`Site: ${input.metadata.site_name}`);
 
-  const contentPreview = input.content?.slice(0, 500) || '';
+  const contentPreview = input.content?.slice(0, 800) || '';
+  if (contentPreview) lines.push(`Content: ${contentPreview}${input.content && input.content.length > 800 ? '...' : ''}`);
 
-  return `Generate a concise description (max 280 characters) for this knowledge item.
+  return `Your job is to do your best to answer 'what is this' - the most simple, high level contextual information of what this thing is. Users will be adding a variety of different nodes (ideas, books, podcasts, people, papers etc). Do your best to take the available information and infer what it is - high level. If unsure, that's fine just give your best guess and say you're unsure. Max 280 characters.
 
-CRITICAL REQUIREMENTS:
-- Start with "This is a..."
-- Identify the content type (article, video, paper, podcast episode, tweet, book, tutorial, etc.)
-- Be specific about what the content covers
-- Maximum 280 characters total
-
-=== KNOWLEDGE ITEM ===
-Title: ${input.title}
-${metadataLines.length > 0 ? metadataLines.join('\n') : ''}
-${contentPreview ? `\nContent preview: ${contentPreview}${input.content && input.content.length > 500 ? '...' : ''}` : ''}
-
-=== YOUR RESPONSE ===
-Write ONLY the description, nothing else. Start with "This is a..."`;
+${lines.join('\n')}`;
 }
 
 export const descriptionService = {