debug: add logging to refresh route and refresh-opportunities lib

Log user id/email, keywords, subreddits, match counts, and duplicate count
to help diagnose Scan Now returning no new opportunities.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dongzhang84

app/api/opportunities/refresh/route.ts

@@ -12,6 +12,8 @@ export async function POST() {
     return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
   }
 
+  console.log(`[refresh] Triggered by user: ${user.id} (${user.email})`)
+
   try {
     const opportunitiesSaved = await refreshOpportunitiesForUser(user.id)
     return NextResponse.json({ success: true, opportunitiesSaved })

lib/refresh-opportunities.ts

@@ -46,6 +46,9 @@ export async function refreshOpportunitiesForUser(userId: string): Promise<numbe
     return 0
   }
 
+  console.log(`[refresh] User ${userId} — keywords: [${profile.keywords.join(', ')}]`)
+  console.log(`[refresh] User ${userId} — subreddits: [${profile.subreddits.join(', ')}]`)
+
   // Fetch Reddit posts for each of the user's subreddits
   const redditPosts: NormalizedPost[] = []
   await Promise.all(
@@ -130,6 +133,7 @@ export async function refreshOpportunitiesForUser(userId: string): Promise<numbe
     skipDuplicates: true,
   })
 
-  console.log(`[refresh] User ${userId} — saved ${result.count} new opportunity(ies)`)
+  const duplicates = scored.length - result.count
+  console.log(`[refresh] User ${userId} — saved ${result.count} new opportunity(ies) (${duplicates} skipped as duplicates)`)
   return result.count
 }