Require explicit initial search queries rather than copying whole requests

src/clean_agent_preview.py

@@ -3460,15 +3460,13 @@ def preserve_requested_web_recency(name, args, *, user_text='', prior_search_int
     user = str(user_text or '')
     query = str(args.get('query') or '').strip()
     if not query:
-        if prior_search_intents:
+        raise ValueError(
-            raise ValueError(
+            'web_search requires an explicit nonempty query. '
-                'web_search requires an explicit query for a follow-up. Supply a '
+            + ('Supply a specific missing fact, entity, or corroboration question '
-                'specific missing fact, entity, or corroboration question based on '
+               'based on the evidence already returned; do not repeat the original query.'
-                'the evidence already returned; do not repeat the original query.'
+               if prior_search_intents else
-            )
+               'Supply the subject to search for, not the full conversation or answer-format instructions.')
-        query = re.sub(r'\s+', ' ', user).strip().rstrip('?.!')
+        )
-        if not query:
-            return args
     normalized = dict(args)
     # Keep the user's explicit news intent when a model rewrites it to a
     # subject plus "today". Freshness alone does not select the news vertical.

tests/test_clean_agent_preview.py

@@ -2018,12 +2018,13 @@ def test_current_search_arguments_repair_stale_year_and_add_freshness():
 
 
 @pytest.mark.parametrize('missing_query', [{}, {'query': ''}, {'query': '  ', 'time_filter': 'day'}])
-def test_missing_refinement_query_is_not_fabricated(missing_query):
+@pytest.mark.parametrize('prior_intents', [[], ['ai news']])
-    with pytest.raises(ValueError, match='explicit query for a follow-up'):
+def test_missing_refinement_query_is_not_fabricated(missing_query, prior_intents):
+    with pytest.raises(ValueError, match='explicit nonempty query'):
         preserve_requested_web_recency(
             'web_search', missing_query,
             user_text='serch latest ai news pls',
-            prior_search_intents=['ai news'],
+            prior_search_intents=prior_intents,
         )