feat(task): auto-inject scheduling params into script template via scheduling_map

Add scheduling_map field to ParameterSchema so Application creators can
declare that a parameter (e.g. NP) maps to a scheduling field (e.g. cpus).
The backend auto-injects the scheduling value into script template variables
before rendering, eliminating duplicate user input. The frontend hides
mapped parameters from the form and injects their values on submit.

internal/service/task_service.go

@@ -369,6 +369,18 @@ func (s *TaskService) ProcessTask(ctx context.Context, taskID int64) error {
 		}
 	}
 
+	// 16b-3. Auto-inject scheduling params based on scheduling_map.
+	// If an Application parameter declares scheduling_map, the corresponding
+	// scheduling field value overrides any user-provided value.
+	for _, p := range params {
+		if p.SchedulingMap == "" {
+			continue
+		}
+		if val := ResolveSchedulingMap(p.SchedulingMap, task); val != "" {
+			values[p.Name] = val
+		}
+	}
+
 	// 16c. Validate all params (WORK_DIR and file params now have values).
 	if err := ValidateParams(params, values); err != nil {
 		return fail(model.TaskStepSubmitting, err.Error())