refactor(ui): 移动并复用 isSkillSelected 函数

- 将 isSkillSelected 函数从 PromptInput.tsx 移动到 SlashCommandMenu.tsx
- 在 PromptInput.tsx 中从 SlashCommandMenu 导入 isSkillSelected
- 简化代码结构，避免函数重复定义
- 统一技能选择判断逻辑以提高代码复用性

Author: hqwlkj

src/ui/PromptInput.tsx

@@ -48,7 +48,7 @@ export type { InputKey } from "./prompt";
 import { useTerminalInput } from "./prompt";
 import type { InputKey } from "./prompt";
 import { useHiddenTerminalCursor, useTerminalExtendedKeys, useTerminalFocusReporting } from "./prompt";
-import SlashCommandMenu from "./SlashCommandMenu";
+import SlashCommandMenu, { isSkillSelected } from "./SlashCommandMenu";
 import type { ModelConfigSelection } from "../settings";
 import { FileMentionMenu, ModelsDropdown, RawModelDropdown, SkillsDropdown } from "./components";
 
@@ -818,10 +818,6 @@ export function formatSelectedSkillsStatus(skills: SkillInfo[]): string {
   return `⚡ ${names.join(", ")}`;
 }
 
-export function isSkillSelected(skills: SkillInfo[], skill: SkillInfo): boolean {
-  return skills.some((item) => item.name === skill.name);
-}
-
 export function addUniqueSkill(skills: SkillInfo[], skill: SkillInfo): SkillInfo[] {
   if (isSkillSelected(skills, skill)) {
     return skills;

src/ui/SlashCommandMenu.tsx

@@ -3,14 +3,17 @@ import type { SlashCommandItem } from "./slashCommands";
 import { ARGS_SEPARATOR } from "./constants";
 import React from "react";
 import { Box, Text } from "ink";
+import type { SkillInfo } from "../session";
 
 type SlashCommandMenuProps = {
   items: SlashCommandItem[];
   activeIndex: number;
   width: number;
   maxVisible?: number;
 };
-
+export function isSkillSelected(skills: SkillInfo[], skill: SkillInfo): boolean {
+  return skills.some((item) => item.name === skill.name);
+}
 const SlashCommandMenu = React.memo(function SlashCommandMenu({
   items,
   activeIndex,