fix: sync/barcode/memory overhaul + detailed logs + preview + result tracking

- Sync: fix GiteaSync constructor + add push()/pull() methods
- Barcode: two-tab layout matching GUI (mapping + special rules)
- Memory: spec→specification unification, manual add, confidence/price tracking
- Processing: TaskLogHandler captures detailed logs (barcode mapping, unit conversion)
- Preview: fullscreen dialog for file preview (image/Excel) in Orders/Tables/Images
- Detail: per-file log filtering in file pages
- Tasks: result files now per-task, add copy path button
- Config: reactive edited state + save_config fix
- Dashboard: sync task isolation, log limit 10

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/frontend/src/views/Sync.vue

@@ -126,7 +126,7 @@ async function checkStatus() {
 async function doPush() {
   syncing.value = true
   try {
-    await processingStore.startTask('/sync/push')
+    await processingStore.startTask('/sync/push', undefined, 'sync')
   } catch (err: any) {
     ElMessage.error(err.response?.data?.detail || '推送失败')
   } finally {
@@ -137,7 +137,7 @@ async function doPush() {
 async function doPull() {
   syncing.value = true
   try {
-    await processingStore.startTask('/sync/pull')
+    await processingStore.startTask('/sync/pull', undefined, 'sync')
   } catch (err: any) {
     ElMessage.error(err.response?.data?.detail || '拉取失败')
   } finally {