新增: Phase2 阶段收尾（Sprint 1-20）

重构：删 5 零引用 crate（df-evolve/plugin/stages/task/traceability）+ 清死模块、ai.rs 拆 11 子 module、ai.ts 拆 6 composable、i18n 拆目录
功能：知识库全栈（df-project/scan + CRUD + 时间线 + 前端）、Settings 拆分、appSettings KV 迁移、模型池、LLM 并发 Semaphore
修复：审批持久化根治、ConditionEngine 默认拒绝、NodeRegistry unimplemented 清除、promote 补偿删除、工具结果截断 50KB、路径校验防 symlink 逃逸
文档：B-03 人工审批设计、决策记录三分档、规格契约自检、经验记录、todo 看板、PROGRESS 更新

详见 PROGRESS.md。src-tauri/儿童每日打卡应用/ 与本项目无关，已排除。

src/views/Projects.vue

@@ -1,27 +1,70 @@
 <template>
   <div class="projects">
     <header class="page-header">
-      <h1>📂 项目列表</h1>
+      <h1>{{ $t('projects.title') }}</h1>
       <div class="header-actions">
-        <button class="btn btn-primary" @click="showCreateModal = true">+ 新建项目</button>
+        <button class="btn btn-ghost" @click="openTrash">{{ $t('projects.trash') }}</button>
+        <button class="btn btn-primary" @click="showCreateModal = true">{{ $t('projects.create') }}</button>
       </div>
     </header>
 
     <!-- 新建项目模态框 -->
     <div v-if="showCreateModal" class="modal-overlay" @click.self="showCreateModal = false">
       <div class="modal-box">
-        <h3 class="modal-title">新建项目</h3>
+        <h3 class="modal-title">{{ $t('projects.createTitle') }}</h3>
         <div class="modal-field">
-          <label>项目名称</label>
-          <input v-model="newName" placeholder="输入项目名称" @keyup.enter="submitCreate" />
+          <label>{{ $t('projects.nameLabel') }}</label>
+          <input v-model="newName" :placeholder="$t('projects.namePlaceholder')" @keyup.enter="submitCreate" />
         </div>
         <div class="modal-field">
-          <label>项目描述</label>
-          <textarea v-model="newDesc" placeholder="简要描述项目目标" rows="3"></textarea>
+          <label>{{ $t('projects.descLabel') }}</label>
+          <textarea v-model="newDesc" :placeholder="$t('projects.descPlaceholder')" rows="3"></textarea>
+        </div>
+        <div class="modal-field">
+          <label>{{ $t('projects.codeDirLabel') }}（可选，绑定后自动识别技术栈）</label>
+          <div class="dir-row">
+            <input v-model="newPath" :placeholder="$t('projects.codeDirPlaceholder')" readonly />
+            <button class="btn btn-ghost btn-sm" type="button" @click="pickDir">{{ $t('projects.selectDir') }}</button>
+            <button v-if="newPath" class="btn btn-ghost btn-sm" type="button" @click="clearDir">{{ $t('projects.clearDir') }}</button>
+          </div>
+          <div v-if="pathWarning" class="path-warning">⚠ {{ pathWarning }}</div>
+          <div v-if="newPath" class="scan-row">
+            <button class="btn btn-ghost btn-sm" type="button" @click="aiScan" :disabled="scanning">
+              {{ scanning ? 'AI 扫描中…' : '🤖 AI 扫描填信息' }}
+            </button>
+            <span v-if="scanProjectType" class="tech-tag">{{ scanProjectType }}</span>
+          </div>
+          <div v-if="scanError" class="path-warning">⚠ {{ scanError }}</div>
+          <div v-if="detectedStack.length" class="card-tags" style="margin-top: 8px">
+            <span class="tech-tag" v-for="t in detectedStack" :key="t">{{ t }}</span>
+          </div>
         </div>
         <div class="modal-actions">
-          <button class="btn btn-ghost" @click="showCreateModal = false">取消</button>
-          <button class="btn btn-primary" @click="submitCreate" :disabled="!newName.trim()">确认创建</button>
+          <button class="btn btn-ghost" @click="showCreateModal = false">{{ $t('common.cancel') }}</button>
+          <button class="btn btn-primary" @click="submitCreate" :disabled="!newName.trim()">{{ $t('projects.confirmCreate') }}</button>
+        </div>
+      </div>
+    </div>
+
+    <!-- 回收站模态框 -->
+    <div v-if="showTrashModal" class="modal-overlay" @click.self="showTrashModal = false">
+      <div class="modal-box" style="width: 520px">
+        <h3 class="modal-title">{{ $t('projects.trashTitle') }}</h3>
+        <div v-if="store.deletedProjects.length === 0" class="empty-state" style="padding: 30px 0">{{ $t('projects.trashEmpty') }}</div>
+        <div v-else class="trash-list">
+          <div class="trash-item" v-for="p in store.deletedProjects" :key="p.id">
+            <div class="trash-info">
+              <span class="trash-name">{{ p.name }}</span>
+              <span class="trash-date">{{ formatDate(p.updated_at) }} {{ $t('projects.movedIn') }}</span>
+            </div>
+            <div class="trash-actions">
+              <button class="btn btn-ghost btn-sm" @click="handleRestore(p.id)">{{ $t('projects.restore') }}</button>
+              <button class="btn btn-danger btn-sm" @click="handlePurge(p)">{{ $t('projects.purge') }}</button>
+            </div>
+          </div>
+        </div>
+        <div class="modal-actions">
+          <button class="btn btn-ghost" @click="showTrashModal = false">{{ $t('common.close') }}</button>
         </div>
       </div>
     </div>
@@ -33,7 +76,10 @@
           <div class="card-title-row">
             <h2 class="card-name">{{ project.name }}</h2>
           </div>
-          <span class="stage-badge" :class="stageClass(project.status)">{{ statusLabel(project.status) }}</span>
+          <div class="card-top-actions">
+            <span class="stage-badge" :class="stageClass(project.status)">{{ $t(statusLabel(project.status)) }}</span>
+            <button class="card-del-btn" :title="$t('projects.deleteTitle')" @click.stop="handleDelete(project)">🗑</button>
+          </div>
         </div>
 
         <p class="card-desc">{{ project.description }}</p>
@@ -49,12 +95,17 @@
             <span>{{ formatDate(project.updated_at) }}</span>
           </div>
         </div>
+
+        <!-- 技术栈标签 -->
+        <div class="card-tags" v-if="parseStack(project.stack).length">
+          <span class="tech-tag" v-for="t in parseStack(project.stack)" :key="t">{{ t }}</span>
+        </div>
       </div>
     </div>
 
     <!-- 空状态 -->
     <div v-if="!store.loading && store.projects.length === 0" class="empty-state">
-      暂无项目，点击右上角创建第一个项目
+      {{ $t('projects.empty') }}
     </div>
   </div>
 </template>
@@ -62,50 +113,123 @@
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
+import { useI18n } from 'vue-i18n'
+import { open } from '@tauri-apps/plugin-dialog'
 import { useProjectStore } from '../stores/project'
+import { projectApi } from '../api'
 import { formatDate } from '../utils/time'
+import { projectStatusLabel as statusLabel, projectBadgeClass as stageClass } from '../constants/project'
+import type { ProjectRecord } from '../api/types'
 
 const router = useRouter()
 const store = useProjectStore()
+const { t } = useI18n()
 
-// ── 状态映射 ──
-const statusLabels: Record<string, string> = {
-  planning: '📐 规划中',
-  in_progress: '💻 进行中',
-  paused: '⏸ 已暂停',
-  completed: '✅ 已完成',
-  cancelled: '❌ 已取消',
-}
-
-const statusStageClass: Record<string, string> = {
-  planning: 'stage-design',
-  in_progress: 'stage-coding',
-  paused: 'stage-testing',
-  completed: 'stage-release',
-  cancelled: 'stage-design',
-}
-
-function statusLabel(status: string) {
-  return statusLabels[status] ?? status
-}
-
-function stageClass(status: string) {
-  return statusStageClass[status] ?? 'stage-design'
-}
-
+// 状态映射统一走 ../constants/project(与 ProjectDetail/Tasks/Dashboard 一致)
 // formatDate 由 ../utils/time 提供（统一毫秒字符串解析，根治 Invalid Date）
 
 // ── 新建项目 ──
 const showCreateModal = ref(false)
 const newName = ref('')
 const newDesc = ref('')
+const newPath = ref('')
+const detectedStack = ref<string[]>([])
+const pathWarning = ref('')
+const scanning = ref(false)
+const scanError = ref('')
+const scanProjectType = ref('')
+
+// 解析技术栈 JSON 数组字符串(防崩)
+function parseStack(stack: string | null): string[] {
+  if (!stack) return []
+  try {
+    const arr = JSON.parse(stack)
+    return Array.isArray(arr) ? arr : []
+  } catch {
+    return []
+  }
+}
+
+// 选择目录 → 探测技术栈 + 查重
+async function pickDir() {
+  try {
+    const selected = await open({ directory: true, multiple: false })
+    if (!selected || Array.isArray(selected)) return
+    newPath.value = selected as string
+    detectedStack.value = []
+    pathWarning.value = ''
+    // 探测技术栈(失败不阻塞,后端创建时再探)
+    try { detectedStack.value = await projectApi.scanStack(selected as string) } catch { /* ignore */ }
+    // 查重(已被其他项目绑定则警告,禁止创建)
+    try {
+      const conflict = await projectApi.checkBinding(selected as string)
+      if (conflict) pathWarning.value = `该目录已被项目「${conflict.name}」绑定`
+    } catch { /* ignore */ }
+  } catch (e) {
+    console.error('选择目录失败:', e)
+  }
+}
+
+function clearDir() {
+  newPath.value = ''
+  detectedStack.value = []
+  pathWarning.value = ''
+  scanning.value = false
+  scanError.value = ''
+  scanProjectType.value = ''
+}
+
+// AI 扫描目录 → 自动填描述/技术栈/项目类型(LLM 失败降级规则探测)
+async function aiScan() {
+  if (!newPath.value) return
+  scanning.value = true
+  scanError.value = ''
+  scanProjectType.value = ''
+  try {
+    const result = await projectApi.scanWithAi(newPath.value)
+    detectedStack.value = result.stack
+    if (result.description) newDesc.value = result.description
+    scanProjectType.value = result.project_type ?? ''
+    if (!result.description) scanError.value = 'AI 未能生成描述，可手动填写'
+  } catch (e: any) {
+    scanError.value = e?.toString() ?? 'AI 扫描失败'
+  } finally {
+    scanning.value = false
+  }
+}
 
 async function submitCreate() {
   if (!newName.value.trim()) return
-  await store.createProject(newName.value.trim(), newDesc.value.trim())
+  if (pathWarning.value) return // 目录冲突,禁止创建
+  const stack = detectedStack.value.length ? JSON.stringify(detectedStack.value) : undefined
+  const r = await store.createProject(newName.value.trim(), newDesc.value.trim(), undefined, newPath.value || undefined, stack)
+  if (!r) return // 失败已 toast,保持弹窗不关
   showCreateModal.value = false
   newName.value = ''
   newDesc.value = ''
+  clearDir()
+}
+
+// ── 删除 / 回收站 ──
+const showTrashModal = ref(false)
+
+async function handleDelete(project: ProjectRecord) {
+  if (!confirm(t('projects.confirmDelete', { name: project.name }))) return
+  await store.deleteProject(project.id)
+}
+
+async function openTrash() {
+  await store.loadDeletedProjects()
+  showTrashModal.value = true
+}
+
+async function handleRestore(id: string) {
+  await store.restoreProject(id)
+}
+
+async function handlePurge(project: ProjectRecord) {
+  if (!confirm(t('projects.confirmPurge', { name: project.name }))) return
+  await store.purgeProject(project.id)
 }
 
 // ── 加载 ──
@@ -137,6 +261,9 @@ onMounted(() => {
 }
 .btn-primary { background: var(--df-accent); color: #fff; }
 .btn-primary:hover { background: var(--df-accent-hover); }
+.btn-danger { background: transparent; color: var(--df-danger); border: 0.5px solid rgba(240,101,101,0.4); }
+.btn-danger:hover { background: rgba(240,101,101,0.12); }
+.btn-sm { padding: 4px 10px; font-size: 12px; }
 
 /* ===== 卡片网格 ===== */
 .project-grid {
@@ -241,6 +368,12 @@ onMounted(() => {
   border: 0.5px solid var(--df-border);
 }
 
+/* ===== 目录选择行 ===== */
+.dir-row { display: flex; gap: 8px; align-items: center; }
+.dir-row input { flex: 1; cursor: pointer; }
+.path-warning { margin-top: 6px; font-size: 12px; color: var(--df-danger); }
+.scan-row { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
+
 /* ===== 模态框 ===== */
 .modal-overlay {
   position: fixed; inset: 0;
@@ -279,6 +412,26 @@ onMounted(() => {
   font-size: 14px; color: var(--df-text-dim);
 }
 
+/* ===== 卡片删除按钮 + 回收站 ===== */
+.card-top-actions { display: flex; align-items: center; gap: 8px; }
+.card-del-btn {
+  background: transparent; border: none; cursor: pointer;
+  font-size: 14px; padding: 2px 4px; opacity: 0;
+  transition: opacity 0.15s;
+}
+.project-card:hover .card-del-btn { opacity: 0.55; }
+.card-del-btn:hover { opacity: 1 !important; }
+.trash-list { display: flex; flex-direction: column; max-height: 400px; overflow-y: auto; }
+.trash-item {
+  display: flex; justify-content: space-between; align-items: center;
+  padding: 10px 0; border-bottom: 0.5px solid var(--df-border);
+}
+.trash-item:last-child { border-bottom: none; }
+.trash-info { display: flex; flex-direction: column; gap: 2px; }
+.trash-name { font-size: 14px; color: var(--df-text); font-weight: 500; }
+.trash-date { font-size: 11px; color: var(--df-text-dim); }
+.trash-actions { display: flex; gap: 8px; }
+
 /* ===== 响应式 ===== */
 @media (max-width: 900px) {
   .projects { padding: 16px; }