refactor(cron): improve delivery configuration handling in CronJobEditor and CLI

- Enhanced the delivery configuration logic in CronJobEditor to explicitly set the bestEffort property based on job settings.
- Refactored the CLI command to streamline delivery object creation, ensuring proper handling of optional fields like channel and to.
- Improved code readability and maintainability by restructuring delivery assignment logic.

This update clarifies the delivery configuration process, enhancing the reliability of job settings in both the editor and CLI.

apps/macos/Sources/OpenClaw/CronJobEditor+Helpers.swift

@@ -107,7 +107,11 @@ extension CronJobEditor {
             delivery["channel"] = trimmed.isEmpty ? "last" : trimmed
             let to = self.to.trimmingCharacters(in: .whitespacesAndNewlines)
             if !to.isEmpty { delivery["to"] = to }
-            if self.bestEffortDeliver { delivery["bestEffort"] = true }
+            if self.bestEffortDeliver {
+                delivery["bestEffort"] = true
+            } else if self.job?.delivery?.bestEffort == true {
+                delivery["bestEffort"] = false
+            }
         }
         return delivery
     }