fix(documents): treat library search punctuation literally (#6944)

routes/document/document_routes.py

@@ -16,6 +16,7 @@ from core.database import SessionLocal, Document, DocumentVersion
 from core.database import Session as DbSession
 from src.auth_helpers import get_current_user, _auth_disabled
 from src.constants import MAIL_ATTACHMENTS_DIR
+from src.session_search import _escape_like
 from src.upload_handler import reserve_upload_references
 
 logger = logging.getLogger(__name__)
@@ -571,9 +572,10 @@ def setup_document_routes(session_manager, upload_handler=None) -> APIRouter:
             # match docs containing both words regardless of position/order.
             if search:
                 for tok in search.split():
-                    term = f"%{tok}%"
+                    term = f"%{_escape_like(tok)}%"
                     q = q.filter(
-                        Document.title.ilike(term) | Document.current_content.ilike(term)
+                        Document.title.ilike(term, escape="\\")
+                        | Document.current_content.ilike(term, escape="\\")
                     )
 
             # Language filter. "pdf" is a display language derived from the