test(session-search): guard projected enrichment

tests/test_hermes_state.py

@@ -677,9 +677,45 @@ class TestFTS5Search:
         ]
         assert all("context" in row and row["context"] for row in default)
 
+    def test_search_projection_skips_context_enrichment_queries(self, db):
+        db.create_session(session_id="s1", source="cli")
+        db.append_message("s1", role="user", content="before")
+        db.append_message("s1", role="assistant", content="projectionneedle")
+        db.append_message("s1", role="user", content="after")
 
+        statements = []
+        read_conn = db._get_read_conn() or db._conn
+        traced_connections = [db._conn]
+        if read_conn is not db._conn:
+            traced_connections.append(read_conn)
+        for conn in traced_connections:
+            conn.set_trace_callback(statements.append)
 
+        def context_query_count():
+            normalized = (" ".join(sql.upper().split()) for sql in statements)
+            return sum("WITH TARGET AS (" in sql for sql in normalized)
 
+        try:
+            projected = db.search_messages(
+                "projectionneedle", fields=("session_id", "snippet")
+            )
+            assert len(projected) == 1
+            assert context_query_count() == 0
+
+            full = db.search_messages(
+                "projectionneedle", fields=("session_id", "context")
+            )
+            assert len(full) == 1
+            assert full[0]["context"]
+            assert context_query_count() == 1
+
+            default = db.search_messages("projectionneedle")
+            assert len(default) == 1
+            assert default[0]["context"]
+            assert context_query_count() == 2
+        finally:
+            for conn in traced_connections:
+                conn.set_trace_callback(None)
 
     def test_sanitize_fts5_query_strips_dangerous_chars(self):
         """Unit test for _sanitize_fts5_query static method."""