fix(i18n): update English and Chinese translations for balance popup earned credits

Author: anthhub

apps/web/src/i18n/locales/en.ts

@@ -163,7 +163,7 @@ const en = {
   "layout.sidebar.balancePopup.recharged": "Plan credits (cumulative)",
   "layout.sidebar.balancePopup.rechargedTooltip":
     "Total credits added from your subscription plan",
-  "layout.sidebar.balancePopup.earned": "Reward credits (cumulative)",
+  "layout.sidebar.balancePopup.earned": "Reward credits",
   "layout.sidebar.balancePopup.earnedTooltip":
     "Earned from signup rewards, completed tasks, and activities. Consumption order: plan credits → credit packs → reward credits.",
   "layout.sidebar.balancePopup.consumed": "Consumed",

apps/web/src/i18n/locales/zh-CN.ts

@@ -163,7 +163,7 @@ const zhCN = {
   "layout.sidebar.balancePopup.recharged": "套餐积分（累计）",
   "layout.sidebar.balancePopup.rechargedTooltip":
     "从订阅套餐中累计获得的积分总量",
-  "layout.sidebar.balancePopup.earned": "赠送积分（累计）",
+  "layout.sidebar.balancePopup.earned": "赠送积分",
   "layout.sidebar.balancePopup.earnedTooltip":
     "来自注册奖励、完成任务等活动。消耗顺序：套餐积分 → 积分包 → 赠送积分。",
   "layout.sidebar.balancePopup.consumed": "累计消耗",

apps/web/src/layouts/workspace-layout.tsx

@@ -1030,7 +1030,7 @@ function WorkspaceLayoutInner() {
                               <Info size={10} className="text-text-muted/60" />
                               <span
                                 role="tooltip"
-                                className="pointer-events-none absolute bottom-full left-1/2 z-40 mb-1.5 w-52 -translate-x-1/2 rounded-md bg-neutral-800 px-2.5 py-1.5 text-left text-[11px] font-normal leading-snug text-white opacity-0 shadow-lg transition-opacity duration-150 group-hover:opacity-100"
+                                className="pointer-events-none absolute bottom-full left-0 z-40 mb-1.5 w-52 rounded-md bg-neutral-800 px-2.5 py-1.5 text-left text-[11px] font-normal leading-snug text-white opacity-0 shadow-lg transition-opacity duration-150 group-hover:opacity-100"
                               >
                                 {t(
                                   "layout.sidebar.balancePopup.earnedTooltip",