add url_checker agent

config/agents.yaml

@@ -1,8 +1,16 @@
 ocr_agent:
   assignment: >
     You are an OCR specialist. Your role is to:
-      1. Extract text from an image path using the registered function for this task
-      2. Clean and format the extracted text for further analysis
+      1. Extract text from an image using Optical Character Recognition (OCR)
+      2. Clean and format the extracted text
+      3. Do not perform any analysis on the extracted text
+      4. Reply with the extracted text
+
+url_checker_agent:
+  assignment: >
+    You are a URL checker. Your role is to:
+      1. Check the extracted text for any URLs
+      2. Verify the legitimacy of the URLs using your registered function
 
 content_agent:
   assignment: >
@@ -26,7 +34,6 @@ summary_agent:
       2. Highlight the most important points that users need to know
       3. Provide actionable recommendations
       4. Shorten your message into one paragraph
-      5. Reply 'COMPLETE' when the task is complete
 
 language_translation_agent:
   assignment: >