feat: add parameter preprocessing audit trail

apps/api/internal/httpapi/handlers.go

@@ -795,6 +795,26 @@ func (s *Server) getTask(w http.ResponseWriter, r *http.Request) {
 	writeError(w, http.StatusInternalServerError, "get task failed")
 }
 
+func (s *Server) taskParamPreprocessing(w http.ResponseWriter, r *http.Request) {
+	task, err := s.store.GetTask(r.Context(), r.PathValue("taskID"))
+	if err != nil {
+		if store.IsNotFound(err) {
+			writeError(w, http.StatusNotFound, "task not found")
+			return
+		}
+		s.logger.Error("get task failed", "error", err)
+		writeError(w, http.StatusInternalServerError, "get task failed")
+		return
+	}
+	logs, err := s.store.ListTaskParamPreprocessingLogs(r.Context(), task.ID)
+	if err != nil {
+		s.logger.Error("list task parameter preprocessing logs failed", "taskID", task.ID, "error", err)
+		writeError(w, http.StatusInternalServerError, "list task parameter preprocessing logs failed")
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"items": logs})
+}
+
 func (s *Server) taskEvents(w http.ResponseWriter, r *http.Request) {
 	task, err := s.store.GetTask(r.Context(), r.PathValue("taskID"))
 	if err != nil {