feat: add ultra mode

frontend/src/core/i18n/locales/en-US.ts

@@ -79,6 +79,9 @@ export const enUS: Translations = {
     proMode: "Pro",
     proModeDescription:
       "Reasoning, planning and executing, get more accurate results, may take more time",
+    ultraMode: "Ultra",
+    ultraModeDescription:
+      "Pro mode with subagents enabled, maximum capability for complex multi-step tasks",
     searchModels: "Search models...",
     surpriseMe: "Surprise",
     surpriseMePrompt: "Surprise me",

frontend/src/core/i18n/locales/types.ts

@@ -62,6 +62,8 @@ export interface Translations {
     reasoningModeDescription: string;
     proMode: string;
     proModeDescription: string;
+    ultraMode: string;
+    ultraModeDescription: string;
     searchModels: string;
     surpriseMe: string;
     surpriseMePrompt: string;

frontend/src/core/i18n/locales/zh-CN.ts

@@ -77,6 +77,8 @@ export const zhCN: Translations = {
     reasoningModeDescription: "思考后再行动，在时间与准确性之间取得平衡",
     proMode: "专业",
     proModeDescription: "思考、计划再执行，获得更精准的结果，可能需要更多时间",
+    ultraMode: "超级",
+    ultraModeDescription: "专业模式加子代理，适用于复杂的多步骤任务，功能最强大",
     searchModels: "搜索模型...",
     surpriseMe: "小惊喜",
     surpriseMePrompt: "给我一个小惊喜吧",