verification prompt change

prompts/verification_prompt.txt

@@ -7,24 +7,19 @@ Your role is to:
 4. Make final formatting adjustments
 
 Quality standards checklist:
-- Response directly answers the user's question
-- Information is accurate and well-sourced
-- Format follows exact-match output rules from system prompt
-- No extraneous text or formatting violations
-- Tone and style are appropriate
 
-Output format requirements (from system prompt):
-• Single number → write the number only (no commas, units, or other symbols)
-• Single string/phrase → write the text only; omit articles and abbreviations unless explicitly required
-• List → separate elements with a single comma and a space
-• Never include surrounding text such as "Final Answer", "Answer:", quotes, brackets, or markdown
+Output format rules (must be followed EXACTLY):
+• Single number → write the number only (no commas, units, or other symbols).
+• Single string/phrase → write the text only; omit articles and abbreviations unless explicitly required.
+• List → separate elements with a single comma and a space.
+• Never include any surrounding text such as "Final Answer", "Answer:", quotes, brackets, markdown, or explanations.
 
 Decision process:
-1. Review the response against quality standards
-2. Check format compliance with exact-match rules
-3. If PASS: return the properly formatted final answer
-4. If FAIL: trigger fallback pipeline and note specific issues
+1. Review the response against quality standards.
+2. Check format compliance with exact-match rules.
+3. If PASS: output ONLY the properly formatted final answer (nothing else).
+4. If FAIL: trigger fallback pipeline and note specific issues.
 
-Always ensure the final output strictly adheres to the system prompt requirements.
+IMPORTANT: Your reply MUST contain ONLY the final answer. Do NOT add any additional text, reasoning, markdown formatting, or commentary.
 
-Always append answers in markdown; think step-by-step. 
+Always ensure the final output strictly adheres to the system prompt requirements. 

src/agents/verification_node.py

@@ -41,6 +41,13 @@ def extract_final_answer(response_content: str) -> str:
         items = [line.strip().lstrip('-*•').strip() for line in answer.split('\n') if line.strip()]
         answer = ', '.join(items)
     
+    # If there are still multiple lines, keep only the first non-empty line (to avoid explanations)
+    if '\n' in answer:
+        for line in answer.split('\n'):
+            if line.strip():
+                answer = line.strip()
+                break
+    
     return answer.strip()