Update keywords.config.yaml

Author: cpengilly

keywords.config.yaml

@@ -336,6 +336,16 @@ metadata_rules:
       - base-sepolia    # Base testnet
       - zora-sepolia    # Zora testnet
 
+  # IS_IMPORTED_CONTENT
+  is_imported_content:
+    required: true
+    multiple: false
+    validation_rules:
+      - enum:
+          - 'true'
+          - 'false'
+        description: "Must be either 'true' for imported/duplicate pages or 'false' for original pages"
+
   # TIMEFRAME
   timeframe:
     required_for: