重构: 前端DRY(style全局沉淀 + ts/js公共沉淀)

style-dry:
- 新增 src/styles/components.css: .info-item*/.panel/.panel-header/.tech-tag/.card-tags 全局
- main.ts 注册 import
- 删重复: ProjectDetail/TaskDetail/TaskOutputCard/ProjectCard/Projects(scoped删重复, 全局对子组件生效)
- 未使用清理: Projects .card-progress dead(1处保守核对)

tsjs-dry:
- aiShared.ts: resolveAiLang(合并useAiSend.resolveLang + useAiContext.resolveLanguage)
- stores/knowledge.ts: kindText/kindLabel/kindIcon/knowledgeStatusLabel/knowledgeConfidenceLabel(5公共)
- 删重复: useAiSend/useAiContext(resolveLang) + Knowledge/KnowledgeDetail(4+5 helper) + ActiveProjectsPanel(formatLastActivity→formatRelativeZh复用)

strategy: DRY收口, 公共沉淀(utils/store/shared); relativeTime非纯重复保留; .btn/.empty-hint局部override WATCH未动

src/composables/ai/aiShared.ts

@@ -12,11 +12,30 @@
 
 import { aiApi } from '@/api'
 import { state } from '@/stores/ai'
+import { useAppSettingsStore } from '@/stores/appSettings'
 import i18n from '@/i18n'
 import type { AiToolCallInfo } from '@/api/types'
 
+const appSettings = useAppSettingsStore()
+
 const t = ((i18n as any).global.t as (k: string, named?: Record<string, unknown>) => string).bind((i18n as any).global)
 
+/**
+ * 解析 AI 回复语言(useAiSend.sendMessage / useAiContext.compressContext 共用)。
+ *
+ * df-ai-language='auto' → 回落到 df-language(应用主语言);否则用 df-ai-language 指定值;
+ * 兜底 'zh-CN'。
+ *
+ * 原分别在 useAiSend.resolveLang(三元)与 useAiContext.resolveLanguage(if/else)各一份,
+ * 语义相同仅写法不同,提取至此共用。
+ */
+export function resolveAiLang(): string {
+  const raw = appSettings.get<string>('df-ai-language', 'auto')
+  return raw === 'auto'
+    ? appSettings.get<string>('df-language', 'zh-CN')
+    : raw
+}
+
 /** 客户端消息自增 id(全局唯一,多个 composable 共用 nextMsgId) */
 let _msgCounter = 0
 

src/composables/ai/useAiContext.ts

@@ -24,15 +24,13 @@
 //! 耦合:
 //! - aiApi.clearContext / aiApi.compressContext(IPC)
 //! - state.activeConversationId(读当前对话)
-//! - appSettings.get(df-ai-language/df-language)(压缩语言;与 useAiSend.sendMessage 同源)
+//! - resolveAiLang(压缩语言;与 useAiSend.sendMessage 同源,实现在 aiShared)
 
 import { ref } from 'vue'
 import { listen, type UnlistenFn } from '@tauri-apps/api/event'
 import { aiApi } from '@/api'
-import { useAppSettingsStore } from '@/stores/appSettings'
 import { state } from '@/stores/ai'
-
-const appSettings = useAppSettingsStore()
+import { resolveAiLang } from './aiShared'
 
 /// 压缩中 loading(防重复点击;AiCompressing→true / AiCompressed|AiError→false)
 const isCompressing = ref(false)
@@ -108,20 +106,6 @@ function stopContextListener(): void {
   _callbacks = {}
 }
 
-/**
- * 解析压缩语言(与 useAiSend.sendMessage 同源逻辑):
- * - df-ai-language='auto' → df-language(应用主语言)
- * - 否则用 df-ai-language 指定值
- * - 兜底 'zh-CN'
- */
-function resolveLanguage(): string {
-  const raw = appSettings.get<string>('df-ai-language', 'auto')
-  if (raw === 'auto') {
-    return appSettings.get<string>('df-language', 'zh-CN')
-  }
-  return raw
-}
-
 /**
  * 压缩当前对话上下文。
  *
@@ -136,7 +120,7 @@ async function compressContext(): Promise<void> {
   if (isCompressing.value) return // 防重复点击
   isCompressing.value = true
   try {
-    await aiApi.compressContext(convId, resolveLanguage())
+    await aiApi.compressContext(convId, resolveAiLang())
     // 后端 IPC 同步等到 LLM 压缩完成才 resolve(非 spawn 异步),成功即复位 isCompressing;
     // case 'AiCompressed' 事件也复位(双保险,防事件丢失致按钮永久禁用)
     isCompressing.value = false

src/composables/ai/useAiSend.ts

@@ -19,31 +19,15 @@ import { listen } from '@tauri-apps/api/event'
 import { invoke } from '@tauri-apps/api/core'
 import { ref } from 'vue'
 import { aiApi } from '@/api'
-import { useAppSettingsStore } from '@/stores/appSettings'
 import { state } from '@/stores/ai'
 import type { ContentPart, AiMessage } from '@/api/types'
 import i18n from '@/i18n'
 import { resetStreamWatchdog, clearStreamWatchdog } from './useAiStream'
 import { startListener } from './useAiEvents'
-import { nextMsgId, findToolCall, startApprovalTimer, clearApprovalTimer, clearAllApprovalTimers } from './aiShared'
+import { nextMsgId, findToolCall, startApprovalTimer, clearApprovalTimer, clearAllApprovalTimers, resolveAiLang } from './aiShared'
 
 const t = ((i18n as any).global.t as (k: string, named?: Record<string, unknown>) => string).bind((i18n as any).global)
 
-const appSettings = useAppSettingsStore()
-
-/**
- * B-260617-03 DRY: 解析 AI 回复语言。
- *
- * df-ai-language='auto' → 回落到 df-language;否则用 df-ai-language 指定值。
- * doSend/regenerate/editMessage 三处复用(原各内联同一段表达式)。
- */
-function resolveLang(): string {
-  const raw = appSettings.get<string>('df-ai-language', 'auto')
-  return raw === 'auto'
-    ? appSettings.get<string>('df-language', 'zh-CN')
-    : raw
-}
-
 /// 待发送队列上限（超过抛错提示用户）
 const QUEUE_LIMIT = 10
 
@@ -114,7 +98,7 @@ async function doSend(text: string, skill?: string, force = false, parts?: Conte
   resetStreamWatchdog() // 启动流式看门狗,无数据超时兜底
 
   await startListener()
-  const lang = resolveLang()
+  const lang = resolveAiLang()
   try {
     // force=true 走 force_send IPC(复位残留 generating),否则走正常 send
     // F-01 阶段6: 透传 modelOverride(主对话专用,后端兜底校验池内才用)
@@ -170,7 +154,7 @@ async function regenerate() {
   resetStreamWatchdog()
 
   await startListener()
-  const lang = resolveLang()
+  const lang = resolveAiLang()
   const convId = state.activeConversationId
   if (!convId) {
     // 无活跃对话:回滚占位,报错
@@ -240,7 +224,7 @@ async function editMessage(newMessage: string) {
   resetStreamWatchdog()
 
   await startListener()
-  const lang = resolveLang()
+  const lang = resolveAiLang()
   const convId = state.activeConversationId
   if (!convId) {
     state.streaming = false