重构: confirmDialog抽composable+tool_result反向查找+search列限定

- FR-D5 抽 useConfirm 收敛 4 视图(Projects/ProjectDetail/Ideas/Settings)确认弹层重复
- FR-D4 replace_tool_result_content 正向 O(n) 改反向 rposition(审批替换命中最近,调用低频)
- FR-D2 search_vector SELECT * 改显式 14 列(消除隐式依赖,字段级精简待单独立项)

src/views/Settings.vue

@@ -373,6 +373,7 @@ import { reactive, ref, computed, watch, onMounted, onUnmounted } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { aiApi, knowledgeApi } from '../api'
 import { useAppSettingsStore } from '../stores/appSettings'
+import { useConfirm } from '../composables/useConfirm'
 import type { AiProviderConfig } from '../api/types'
 import i18n from '../i18n'
 
@@ -399,24 +400,9 @@ function showToast(msg: string, type: 'error' | 'warning' | 'info' = 'info') {
   _toastTimer = setTimeout(() => { toast.visible = false }, 3000)
 }
 
-// 自建确认弹层（替代 window.confirm —— 后者带 webview 来源域名/端口，无法去除）
-const confirmState = reactive({
-  visible: false,
-  msg: '',
-  resolve: null as null | ((v: boolean) => void),
-})
-function confirmDialog(msg: string): Promise<boolean> {
-  return new Promise(resolve => {
-    confirmState.msg = msg
-    confirmState.visible = true
-    confirmState.resolve = resolve
-  })
-}
-function answerConfirm(ok: boolean) {
-  confirmState.visible = false
-  confirmState.resolve?.(ok)
-  confirmState.resolve = null
-}
+// 确认弹层状态机抽至 composables/useConfirm(原 4 视图重复:Projects/ProjectDetail/Ideas/Settings)
+// 模板 confirmState.visible/msg 在 <script setup> 中自动解包 ref,沿用既有内联确认弹层
+const { confirmState, confirmDialog, answerConfirm } = useConfirm()
 
 const providerForm = reactive({
   visible: false,