Update src/api/agent.py

src/api/agent.py

@@ -2539,7 +2539,24 @@ def _parse_refinement_action(question: str) -> Optional[str]:
     # Alternative search terms — NEW
     if ALT_TERMS_RE.search(q):
         return "alt_terms"
+    # summarize_topic: ONLY match short/topicless follow-ups like "summarize this",
+    # "give me an overview", "what does the literature say" — NOT questions that
+    # include an explicit new topic like "summarize quantum physics".
+    # A question with 4+ non-stop content words almost certainly has its own topic
+    # and should be handled as a fresh query, not a follow-up.
     if re.search(r"\b(summar(y|ize|ise)|overview|brief|what does the literature say|research snapshot)\b", q):
+        _STOP = {
+            'a','an','the','of','on','in','for','to','with','by','from','at','is','are',
+            'was','were','be','been','have','has','had','do','does','did','will','would',
+            'could','should','may','its','this','that','these','those','about','me','my',
+            'give','show','tell','please','can','you','i','need','want','get','find',
+            'research','summary','overview','summarize','summarise','brief','literature',
+        }
+        content_words = [t for t in re.findall(r'[a-z0-9]+', q)
+                         if t not in _STOP and (len(t) > 2 or t in {'ai','ml','nlp','cv','rl','dl','uae','ku','iot'})]
+        # Any explicit topic word → treat as a fresh query, not a follow-up
+        if content_words:
+            return None
         return "summarize_topic"
     if re.search(r"\bpubmed\b", q):
         return "search_pubmed"