fix: add edit button, bypass constraints on manual sync

- Add Edit icon to PairDetailScreen top bar
- Wire onEdit callback through NavGraph to AddPairScreen with pairId
- Manual "Sync now" (home card + detail screen) now ignores wifiOnly
  and chargingOnly constraints so it runs immediately on tap

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/kotlin/com/syncflow/ui/pairdetail/PairDetailScreen.kt

@@ -21,6 +21,7 @@ import java.time.format.FormatStyle
 @Composable
 fun PairDetailScreen(
     onBack: () -> Unit,
+    onEdit: (Long) -> Unit,
     onConflicts: (Long) -> Unit,
     vm: PairDetailViewModel = hiltViewModel(),
 ) {
@@ -49,6 +50,7 @@ fun PairDetailScreen(
                 title = { Text(pair?.name ?: "…") },
                 navigationIcon = { IconButton(onClick = onBack) { Icon(Icons.Default.ArrowBack, "Back") } },
                 actions = {
+                    IconButton(onClick = { pair?.let { onEdit(it.id) } }) { Icon(Icons.Default.Edit, "Edit") }
                     IconButton(onClick = { vm.syncNow() }) { Icon(Icons.Default.Sync, "Sync now") }
                     IconButton(onClick = { showDelete = true }) { Icon(Icons.Default.Delete, "Delete") }
                 },

app/src/main/kotlin/com/syncflow/ui/pairdetail/PairDetailViewModel.kt

@@ -36,7 +36,7 @@ class PairDetailViewModel @Inject constructor(
 
     fun syncNow() {
         val p = pair.value ?: return
-        workManager.enqueue(SyncWorker.buildOneTimeRequest(p.id, p.wifiOnly, p.chargingOnly))
+        workManager.enqueue(SyncWorker.buildOneTimeRequest(p.id, wifiOnly = false, chargingOnly = false))
     }
 
     fun delete() {