feat(ui): move usage display inline next to enable button

- Refactor UsageFooter to support inline mode with two-row layout
  - Row 1: Last refresh time + refresh button (right-aligned)
  - Row 2: Used + Remaining + Unit
- Update ProviderCard layout to show usage inline instead of below
- Improve text spacing: reduce gap from 1 to 0.5 for tighter label-value pairs
- Update Chinese translation: "使用" → "已使用" for better clarity
- Maintain backward compatibility with bottom display mode

This change unifies card heights and improves visual consistency
across providers with and without usage queries enabled.

src/components/UsageFooter.tsx

@@ -11,6 +11,7 @@ interface UsageFooterProps {
   appId: AppId;
   usageEnabled: boolean; // 是否启用了用量查询
   isCurrent: boolean; // 是否为当前激活的供应商
+  inline?: boolean; // 是否内联显示（在按钮左侧）
 }
 
 const UsageFooter: React.FC<UsageFooterProps> = ({
@@ -19,6 +20,7 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
   appId,
   usageEnabled,
   isCurrent,
+  inline = false,
 }) => {
   const { t } = useTranslation();
 
@@ -56,6 +58,25 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
 
   // 错误状态
   if (!usage.success) {
+    if (inline) {
+      return (
+        <div className="flex items-center gap-2 text-xs">
+          <div className="flex items-center gap-1.5 text-red-500 dark:text-red-400">
+            <AlertCircle size={12} />
+            <span>{t("usage.queryFailed")}</span>
+          </div>
+          <button
+            onClick={() => refetch()}
+            disabled={loading}
+            className="p-1 rounded hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors disabled:opacity-50 flex-shrink-0"
+            title={t("usage.refreshUsage")}
+          >
+            <RefreshCw size={12} className={loading ? "animate-spin" : ""} />
+          </button>
+        </div>
+      );
+    }
+
     return (
       <div className="mt-3 pt-3 border-t border-border-default ">
         <div className="flex items-center justify-between gap-2 text-xs">
@@ -83,6 +104,80 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
   // 无数据时不显示
   if (usageDataList.length === 0) return null;
 
+  // 内联模式：仅显示第一个套餐的核心数据（分上下两行）
+  if (inline) {
+    const firstUsage = usageDataList[0];
+    const isExpired = firstUsage.isValid === false;
+
+    return (
+      <div className="flex flex-col gap-1 text-xs flex-shrink-0">
+        {/* 第一行：刷新时间 + 刷新按钮 */}
+        <div className="flex items-center gap-2 justify-end">
+          {/* 上次查询时间 */}
+          {lastQueriedAt && (
+            <span className="text-[10px] text-gray-400 dark:text-gray-500 flex items-center gap-1">
+              <Clock size={10} />
+              {formatRelativeTime(lastQueriedAt, now, t)}
+            </span>
+          )}
+
+          {/* 刷新按钮 */}
+          <button
+            onClick={() => refetch()}
+            disabled={loading}
+            className="p-1 rounded hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors disabled:opacity-50 flex-shrink-0"
+            title={t("usage.refreshUsage")}
+          >
+            <RefreshCw size={12} className={loading ? "animate-spin" : ""} />
+          </button>
+        </div>
+
+        {/* 第二行：已用 + 剩余 + 单位 */}
+        <div className="flex items-center gap-2">
+          {/* 已用 */}
+          {firstUsage.used !== undefined && (
+            <div className="flex items-center gap-0.5">
+              <span className="text-gray-500 dark:text-gray-400">
+                {t("usage.used")}
+              </span>
+              <span className="tabular-nums text-gray-600 dark:text-gray-400 font-medium">
+                {firstUsage.used.toFixed(2)}
+              </span>
+            </div>
+          )}
+
+          {/* 剩余 */}
+          {firstUsage.remaining !== undefined && (
+            <div className="flex items-center gap-0.5">
+              <span className="text-gray-500 dark:text-gray-400">
+                {t("usage.remaining")}
+              </span>
+              <span
+                className={`font-semibold tabular-nums ${
+                  isExpired
+                    ? "text-red-500 dark:text-red-400"
+                    : firstUsage.remaining <
+                        (firstUsage.total || firstUsage.remaining) * 0.1
+                      ? "text-orange-500 dark:text-orange-400"
+                      : "text-green-600 dark:text-green-400"
+                }`}
+              >
+                {firstUsage.remaining.toFixed(2)}
+              </span>
+            </div>
+          )}
+
+          {/* 单位 */}
+          {firstUsage.unit && (
+            <span className="text-gray-500 dark:text-gray-400">
+              {firstUsage.unit}
+            </span>
+          )}
+        </div>
+      </div>
+    );
+  }
+
   return (
     <div className="mt-3 pt-3 border-t border-border-default ">
       {/* 标题行：包含刷新按钮和自动查询时间 */}
@@ -104,10 +199,7 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
             className="p-1 rounded hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors disabled:opacity-50"
             title={t("usage.refreshUsage")}
           >
-            <RefreshCw
-              size={12}
-              className={loading ? "animate-spin" : ""}
-            />
+            <RefreshCw size={12} className={loading ? "animate-spin" : ""} />
           </button>
         </div>
       </div>

src/components/providers/ProviderCard.tsx

@@ -170,22 +170,25 @@ export function ProviderCard({
           </div>
         </div>
 
-        <ProviderActions
-          isCurrent={isCurrent}
-          onSwitch={() => onSwitch(provider)}
-          onEdit={() => onEdit(provider)}
-          onConfigureUsage={() => onConfigureUsage(provider)}
-          onDelete={() => onDelete(provider)}
-        />
-      </div>
+        <div className="flex items-center gap-3">
+          <UsageFooter
+            provider={provider}
+            providerId={provider.id}
+            appId={appId}
+            usageEnabled={usageEnabled}
+            isCurrent={isCurrent}
+            inline={true}
+          />
 
-      <UsageFooter
-        provider={provider}
-        providerId={provider.id}
-        appId={appId}
-        usageEnabled={usageEnabled}
-        isCurrent={isCurrent}
-      />
+          <ProviderActions
+            isCurrent={isCurrent}
+            onSwitch={() => onSwitch(provider)}
+            onEdit={() => onEdit(provider)}
+            onConfigureUsage={() => onConfigureUsage(provider)}
+            onDelete={() => onDelete(provider)}
+          />
+        </div>
+      </div>
     </div>
   );
 }

src/i18n/locales/zh.json

@@ -337,7 +337,7 @@
     "planUsage": "套餐用量",
     "invalid": "已失效",
     "total": "总：",
-    "used": "使用：",
+    "used": "已使用：",
     "remaining": "剩余：",
     "justNow": "刚刚",
     "minutesAgo": "{{count}} 分钟前",