Fix 'Replace lower quality on import' setting not persisting

The import section appeared twice in the saveSettings object literal —
the second key (staging_path only) silently overwrote the first
(replace_lower_quality). JavaScript uses last-wins for duplicate keys.
Merged into a single import block.

webui/static/helper.js

@@ -3607,6 +3607,7 @@ const WHATS_NEW = {
         { title: 'Fix Wishlist Button on Non-Dashboard Pages', desc: 'Wishlist button click handler moved to global init so it works from any page, not just the dashboard' },
         { title: 'Fix Allow Duplicates Setting Not Saving', desc: 'The "Allow duplicate tracks across albums" toggle was never persisted — it silently reset to ON on every page reload. Now saves correctly' },
         { title: 'Fix Wishlist Dropping Cross-Album Tracks', desc: 'Wishlist cleanup was removing same-titled tracks from different albums even when Allow Duplicates was enabled. Cleanup now respects the setting — same song from different albums can coexist in the wishlist' },
+        { title: 'Fix "Replace Lower Quality" Setting Not Persisting', desc: 'The import section appeared twice in the settings save payload — the second instance (with only staging_path) overwrote the first (with replace_lower_quality). Merged into a single block' },
 
         // --- April 14, 2026 ---
         { date: 'April 14, 2026' },

webui/static/script.js

@@ -7286,7 +7286,8 @@ async function saveSettings(quiet = false) {
             music_videos_path: document.getElementById('music-videos-path').value || './MusicVideos'
         },
         import: {
-            replace_lower_quality: document.getElementById('import-replace-lower-quality').checked
+            replace_lower_quality: document.getElementById('import-replace-lower-quality').checked,
+            staging_path: document.getElementById('staging-path').value || './Staging'
         },
         lossy_copy: {
             enabled: document.getElementById('lossy-copy-enabled').checked,
@@ -7299,9 +7300,6 @@ async function saveSettings(quiet = false) {
             enabled: document.getElementById('listening-stats-enabled').checked,
             poll_interval: parseInt(document.getElementById('listening-stats-interval').value) || 30,
         },
-        import: {
-            staging_path: document.getElementById('staging-path').value || './Staging'
-        },
         m3u_export: {
             enabled: document.getElementById('m3u-export-enabled').checked,
             entry_base_path: document.getElementById('m3u-entry-base-path').value || ''