Change workflow schedule from every 30 minutes to daily at 11am UTC (#139)

Author: Copilot

.github/SYNDICATION_SETUP.md

@@ -225,7 +225,7 @@ The workflow will:
 - ❌ Report errors to GitHub Actions logs  
 - 🔄 Use IFTTT as fallback for failed API calls
 - 💾 Cache processed items to prevent duplicates
-- ⏰ Run backup checks every 30 minutes
+- ⏰ Run daily backup check at 11am UTC
 - 📅 Only syndicate items published today (prevents re-posting old content)
 
 ## Migration from Zapier

.github/workflows/syndicate-content.yml

@@ -23,9 +23,9 @@ on:
         default: false
         type: boolean
 
-  # Scheduled backup check (runs every 30 minutes)
+  # Scheduled daily check at 11am UTC
   schedule:
-    - cron: "*/30 * * * *"
+    - cron: "0 11 * * *"
 
 jobs:
   syndicate: