debug: add console.log to re-scan flow

- Added logging to ctxReprocess, doReprocess
- Log API call and response for debugging
- Check if reprocessing flag is blocking the action

src/views/LibraryView.vue

@@ -2196,13 +2196,15 @@ async function waitForStable(condition: () => boolean | Promise<boolean>, timeou
 
 async function ctxReprocess(f: any) {
   closeContextMenu()
-  if (reprocessing.value) return
+  if (reprocessing.value) { console.error('[ctxReprocess] already reprocessing'); return }
+  console.log('[ctxReprocess] opening confirm dialog for:', f.file_uuid)
   confirmTarget.value = { mode: 'reprocess', file: f }
   confirmDialog.value = true
 }
 
 async function doReprocess(f: any) {
-  if (reprocessing.value) return
+  console.log('[doReprocess] called for:', f?.file_uuid, f?.file_name)
+  if (reprocessing.value) { console.error('[doReprocess] already reprocessing'); return }
   if (!f.isRegistered) { actionMsg.value = 'File not registered'; return }
   reprocessing.value = true
   
@@ -2210,9 +2212,12 @@ async function doReprocess(f: any) {
   if (!file) {
     actionMsg.value = 'File not found in cache'
     reprocessing.value = false
+    console.error('[doReprocess] file not found in cache')
     return
   }
   
+  console.log('[doReprocess] found file, status:', file.status)
+  
   const oldStatus = file.status
   
   try {
@@ -2220,10 +2225,12 @@ async function doReprocess(f: any) {
     fileStatusCache.value[file.file_uuid] = 'preparing'
     actionMsg.value = '🔍 Starting deep scan...'
     
+    console.log('[doReprocess] calling re_scan_file API for:', file.file_uuid)
     const result = await apiCall('re_scan_file', { 
       fileUuid: file.file_uuid,
       autoPipeline: true
     })
+    console.log('[doReprocess] API response:', JSON.stringify(result))
     
     if (result.success) {
       file.status = 'scanning'