fix: resolve TypeScript compilation errors

Fixes:
- VideoPlayer.vue: restore allTags, filteredMarks, marksByTag (removed by mistake)
- PeopleView.vue: fix frameTime scope in playFaceDetailVideo catch block
- Both errors caused white screen on build failure

Root cause:
1. visibleTags duplicate declaration (old + new logic)
2. frameTime undefined in catch block (scope issue)

Solution:
1. Keep allTags/filteredMarks/marksByTag (needed in template)
2. Keep visibleTags (new logic for processor toggles)
3. Move frameTime calculation to correct scope in catch block

src/views/PeopleView.vue

@@ -1353,26 +1353,29 @@ async function playFaceDetailVideo() {
   const c = faceDetailModal.value.candidate
   if (!c || !c.file_uuid) return
   const frame = c.frame_number || 0
+  const defaultFps = 30
+  
   try {
     const fileInfo: any = await apiCall('get_file_info', { uuid: c.file_uuid })
-    const fps = fileInfo?.fps || 30
+    const fps = fileInfo?.fps || defaultFps
     const frameTime = frame / fps
     const startTime = Math.max(0, frameTime - 5)
     const endTime = frameTime + 5
-currentVideo.value = {
+    currentVideo.value = {
       fileUuid: c.file_uuid,
-      startFrame: startTime * fps,
-      endFrame: endTime * fps,
+      startFrame: Math.round(startTime * fps),
+      endFrame: Math.round(endTime * fps),
       title: `F${Math.round(startTime * fps)}-F${Math.round(endTime * fps)} (${c.name})`
     }
     playing.value = true
   } catch (e) {
     console.error('Failed to get file info:', e)
+    const frameTime = frame / defaultFps
     currentVideo.value = {
       fileUuid: c.file_uuid,
-      startFrame: Math.round(Math.max(0, frameTime - 5) * 30),
-      endFrame: Math.round((frameTime + 5) * 30),
-      title: `F${Math.round(Math.max(0, frameTime - 5) * 30)}-F${Math.round((frameTime + 5) * 30)}`
+      startFrame: Math.round(Math.max(0, frameTime - 5) * defaultFps),
+      endFrame: Math.round((frameTime + 5) * defaultFps),
+      title: `F${Math.round(Math.max(0, frameTime - 5) * defaultFps)}-F${Math.round((frameTime + 5) * defaultFps)}`
     }
     playing.value = true
   }