Fix library scan button stuck on 'Stop' and stale count shown as 'failed'

Dashboard scan polling checked for 'completed' but backend sets 'finished'.
Added 'finished' to the completion check so polling stops, button resets,
stats refresh, and toast fires correctly. Also fixed deep scan reporting
stale record removals as 'failed' instead of 'successful'.

web_server.py

@@ -24628,7 +24628,7 @@ def _run_soulsync_deep_scan():
 
         print(f"[SoulSync Deep Scan] {summary}")
         add_activity_item("", "SoulSync Deep Scan", summary, "Now")
-        _db_update_finished_callback(0, 0, len(transfer_files), moved_count, stale_count)
+        _db_update_finished_callback(0, 0, len(transfer_files), moved_count + stale_count, 0)
 
     except Exception as e:
         print(f"[SoulSync Deep Scan] Error: {e}")

webui/static/script.js

@@ -25526,11 +25526,11 @@ async function dashboardLibraryScan(fullRefresh = false) {
                     detail.textContent = `${status.processed} / ${status.total || '?'}`;
                 }
 
-                if (status.status === 'completed' || status.status === 'error' || status.status === 'idle') {
+                if (status.status === 'completed' || status.status === 'finished' || status.status === 'error' || status.status === 'idle') {
                     clearInterval(pollInterval);
                     window._libraryStatusScanning = false;
 
-                    if (status.status === 'completed') {
+                    if (status.status === 'completed' || status.status === 'finished') {
                         showToast('Library scan complete', 'success');
                     } else if (status.status === 'error') {
                         showToast(`Scan error: ${status.error_message || 'Unknown'}`, 'error');
@@ -25608,11 +25608,11 @@ async function dashboardLibraryDeepScan() {
                     detail.textContent = `${status.processed} / ${status.total || '?'}`;
                 }
 
-                if (status.status === 'completed' || status.status === 'error' || status.status === 'idle') {
+                if (status.status === 'completed' || status.status === 'finished' || status.status === 'error' || status.status === 'idle') {
                     clearInterval(pollInterval);
                     window._libraryStatusScanning = false;
 
-                    if (status.status === 'completed') {
+                    if (status.status === 'completed' || status.status === 'finished') {
                         showToast('Deep scan complete', 'success');
                     } else if (status.status === 'error') {
                         showToast(`Deep scan error: ${status.error_message || 'Unknown'}`, 'error');