fix: refine mobile workbench sheets

src/features/workbench/components/scheduled-condition-feed.tsx

@@ -4,6 +4,7 @@ import {
   ChevronRight,
   ClipboardList,
   History,
+  X,
   XCircle
 } from "lucide-react";
 import { AnimatePresence, motion } from "motion/react";
@@ -58,6 +59,7 @@ type ScheduledConditionFeedProps = {
   onFocusRequestHandled?: (requestId: number) => void;
   onSelectedConditionChange?: (conditionId: string | null) => void;
   onExpandAgent: () => void;
+  onClose?: () => void;
   onLoadHistorySession: (sessionId: string) => void | Promise<void>;
   onSubmitPrompt: (prompt: string) => void | Promise<void>;
 };
@@ -79,6 +81,7 @@ export function ScheduledConditionFeed({
   onFocusRequestHandled,
   onSelectedConditionChange,
   onExpandAgent,
+  onClose,
   onLoadHistorySession,
   onSubmitPrompt
 }: ScheduledConditionFeedProps) {
@@ -325,6 +328,19 @@ export function ScheduledConditionFeed({
           />
           <span className="sr-only">{expanded ? "收起工况任务" : "展开工况任务"}</span>
         </button>
+        {mobileSheet && onClose ? (
+          <button
+            type="button"
+            aria-label="关闭工况任务"
+            title="关闭工况任务"
+            onClick={onClose}
+            className="group grid h-10 w-10 shrink-0 place-items-center rounded-full text-slate-500"
+          >
+            <span className="surface-control grid h-9 w-9 place-items-center rounded-full shadow-[inset_0_0_0_1px_rgba(148,163,184,0.26),0_4px_12px_rgba(15,33,55,0.10)] transition-[color,background-color,scale] group-active:scale-95 [@media(hover:hover)]:group-hover:bg-blue-50 [@media(hover:hover)]:group-hover:text-blue-700">
+              <X size={17} strokeWidth={2.25} aria-hidden="true" />
+            </span>
+          </button>
+        ) : null}
       </header>
 
       <div