Remove legacy issues shell code

- Delete the static issues page renderer and detail modal helpers
- Keep the React issues route as the only implementation
- Drop the dead mobile CSS and troubleshooter hook that only targeted the removed shell

webui/static/helper.js

@@ -4536,17 +4536,6 @@ const TROUBLESHOOT_RULES = [
             'Consider switching to iTunes temporarily to continue working'
         ]
     },
-    {
-        selector: '.issue-card.status-open, .issues-stat-open',
-        title: 'Open Issues in Library',
-        steps: [
-            'Open issues have been reported for tracks in your library',
-            'Go to the Issues page to review and resolve them',
-            'Common issues: wrong track downloaded, bad metadata, low audio quality',
-            'Each issue has fix suggestions and action buttons'
-        ],
-        action: { label: 'View Issues', fn: () => navigateToPage('issues') }
-    },
 ];
 
 function activateTroubleshootMode() {

webui/static/init.js

@@ -2198,9 +2198,6 @@ function initApp() {
     // Start always-on download polling (batched, minimal overhead)
     startGlobalDownloadPolling();
 
-    // Load issues badge count
-    loadIssuesBadge();
-
     // Load initial data
     loadInitialData();
 
@@ -2499,9 +2496,6 @@ async function loadPageData(pageId) {
             case 'automations':
                 await loadAutomations();
                 break;
-            case 'issues':
-                await loadIssuesPage();
-                break;
             case 'help':
                 initializeDocsPage();
                 break;

webui/static/mobile.css

@@ -3264,42 +3264,6 @@
     }
 }
 
-/* ======================================
-   ISSUES PAGE — Mobile (supplement)
-   ====================================== */
-
-@media (max-width: 768px) {
-    .issues-header-right {
-        width: 100%;
-        flex-wrap: wrap;
-    }
-
-    .issues-filter-select {
-        flex: 1;
-        min-width: 0;
-    }
-
-    .issues-stats {
-        display: grid;
-        grid-template-columns: repeat(2, 1fr);
-        gap: 8px;
-    }
-
-    .issues-stat-card {
-        min-width: 0;
-        padding: 10px;
-    }
-
-    .issues-stat-value {
-        font-size: 18px;
-    }
-
-    .issue-card-right {
-        flex-wrap: wrap;
-        gap: 6px;
-    }
-}
-
 /* ======================================
    HELP / DOCS PAGE — Mobile
    ====================================== */