feat: Library 批量注册 + PeopleView 修复 + 国际化

Library:
- 添加 checkbox 和鼠标框选功能
- Unregistered 卡片添加快速注册按钮
- 状态标签移至左下方，人脸图标移至左侧中间
- Deep Scan 改为 unregister -> register -> process
- 完整国际化（日语、繁体中文、英语）

PeopleView:
- 修复卡片不显示问题（使用 get_file_traces API）
- 移除对 identity_id 字段的依赖

其他:
- 添加日语语言包
- 添加 useDragSelect composable
- 新增文档：Face Bbox Null Bug Report

src/components/BuildVersion.vue

@@ -1,9 +1,55 @@
 <template>
-  <div class="build-version">{{ version }}</div>
+  <div v-if="isAdvanced" class="build-version" @click="copyInfo" :title="tooltip">{{ displayText }}</div>
 </template>
 
 <script setup lang="ts">
-const version = __BUILD_VERSION__
+import { computed } from 'vue'
+import { useRouter } from 'vue-router'
+import { useAdvancedMode } from '@/stores/advancedMode'
+import pkg from '../../package.json'
+
+const router = useRouter()
+const { isAdvanced } = useAdvancedMode()
+const build = __BUILD_VERSION__
+const shortDate = build.slice(0, 8)
+const appVersion = pkg.version
+
+const pageName = computed(() => {
+  const name = router.currentRoute.value.name
+  return typeof name === 'string' ? name : router.currentRoute.value.path
+})
+
+const displayText = computed(() => `v${appVersion}-${shortDate} | ${pageName.value}`)
+
+const tooltip = computed(() =>
+  `App: ${appVersion}\nBuild: ${build}\nPage: ${pageName.value}`
+)
+
+function copyInfo() {
+  const lines = [
+    '=== MOMENTRY STUDIO ===',
+    `App Version: ${appVersion}`,
+    `Build: ${build}`,
+    `Page: ${pageName.value}`,
+    `Route: ${router.currentRoute.value.path}`,
+    `Timestamp: ${new Date().toISOString()}`
+  ]
+  const text = lines.join('\n')
+  const ta = document.createElement('textarea')
+  ta.value = text
+  ta.style.position = 'fixed'
+  ta.style.left = '0'
+  ta.style.top = '0'
+  ta.style.width = '0'
+  ta.style.height = '0'
+  ta.style.opacity = '0'
+  document.body.appendChild(ta)
+  ta.focus()
+  ta.setSelectionRange(0, text.length)
+  const ok = document.execCommand('copy')
+  document.body.removeChild(ta)
+  if (!ok) window.prompt('Copy (Ctrl+C, Enter):', text)
+}
 </script>
 
 <style scoped>
@@ -14,9 +60,11 @@ const version = __BUILD_VERSION__
   font-size: 10px;
   color: var(--text-secondary, #9aa0a6);
   background: var(--bg-secondary, rgba(0,0,0,0.1));
-  padding: 2px 6px;
+  padding: 2px 8px;
   border-radius: 3px;
   z-index: 9999;
   font-family: monospace;
+  cursor: pointer;
+  white-space: nowrap;
 }
 </style>