Update src/api/agent.py

src/api/agent.py

@@ -1556,6 +1556,39 @@ def _light_strip_retrieval_boilerplate(text: str) -> str:
     return re.sub(r"\s+", " ", cleaned).strip()
 
 
+_LEGACY_SYSTEM_PATTERNS = [
+    # Summon — KU's old discovery system, replaced by PRIMO
+    (
+        re.compile(
+            r'(you can use )?summon[™™]?\s*(to find [^.]+\.)?\s*'
+            r'(search summon\s*)?'
+            r'(what is summon[™™]?.*?(?:search screen|search results|find articles)[^<]*)?',
+            re.IGNORECASE | re.DOTALL,
+        ),
+        "PRIMO Library Discovery (https://khalifa.primo.exlibrisgroup.com/discovery/search?vid=971KUOSTAR_INST:KU)",
+    ),
+    # Any bare Summon reference
+    (re.compile(r'\bSummon[™™]?\b', re.IGNORECASE), "PRIMO Library Discovery"),
+    # EDS / EBSCO Discovery Service (not the same as EBSCO databases)
+    (re.compile(r'\bEBSCO Discovery Service\b', re.IGNORECASE), "PRIMO Library Discovery"),
+    # Encore (old III discovery)
+    (re.compile(r'\bEncore\b(?!\s+(?:learning|education))', re.IGNORECASE), "PRIMO Library Discovery"),
+]
+
+
+def _sanitize_llm_response(text: str) -> str:
+    """
+    Strip legacy discovery system references from LLM output.
+    KU migrated from Summon → PRIMO. Old KB chunks may still mention Summon
+    and the LLM may echo them. This runs as a final pass on all agent answers.
+    """
+    if not text:
+        return text
+    for pattern, replacement in _LEGACY_SYSTEM_PATTERNS:
+        text = pattern.sub(replacement, text)
+    return text
+
+
 def _sanitize_boolean_for_primo(boolean: str) -> str:
     """Clean LLM-generated boolean so it works in PRIMO advanced search URLs."""
     if not boolean:
@@ -3496,6 +3529,8 @@ async def agent_query(request: Request, req: AgentRequest):
     client_state = req.client_state
     _safe_metrics_increment("agent_requests")
     response = await _agent_query_inner(question, history, model, client_state, start_time)
+    # Strip legacy discovery system references (Summon etc.) from all responses
+    response.answer = _sanitize_llm_response(response.answer)
     _log_agent_query(question, response, start_time)
     # Append announcement banner if set in admin config
     _rcfg = _get_runtime_config()