feat: v1.32.0 — The Big Easter Update

Internet Radio full release (HTML5 engine, card UI, RadioDirectoryModal,
cover upload), Backup/Restore, Albums year filter, Statistics Library
Insights (playtime/genres/formats), Playlist cover upload, resizable
tracklist columns for Playlists & Favorites, crossfade fine control,
Settings Storage tab redesign, various fixes and UI polish.

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

src/utils/backup.ts

@@ -0,0 +1,73 @@
+import { save, open as openDialog } from '@tauri-apps/plugin-dialog';
+import { writeFile, readTextFile } from '@tauri-apps/plugin-fs';
+import { version as appVersion } from '../../package.json';
+
+const BACKUP_VERSION = 1;
+
+const BACKUP_KEYS = [
+  'psysonic-auth',
+  'psysonic_theme',
+  'psysonic_font',
+  'psysonic_language',
+  'psysonic_keybindings',
+  'psysonic_sidebar',
+  'psysonic-eq',
+  'psysonic_global_shortcuts',
+  'psysonic-player',
+];
+
+export async function exportBackup(): Promise<string | null> {
+  const stores: Record<string, unknown> = {};
+  for (const key of BACKUP_KEYS) {
+    const val = localStorage.getItem(key);
+    if (val !== null) {
+      try {
+        stores[key] = JSON.parse(val);
+      } catch {
+        stores[key] = val;
+      }
+    }
+  }
+
+  const manifest = {
+    version: BACKUP_VERSION,
+    app_version: appVersion,
+    created_at: new Date().toISOString(),
+    stores,
+  };
+
+  const today = new Date().toISOString().slice(0, 10);
+  const path = await save({
+    filters: [{ name: 'Psysonic Backup', extensions: ['psybkp'] }],
+    defaultPath: `psysonic-backup-${today}.psybkp`,
+  });
+
+  if (!path) return null;
+
+  const content = JSON.stringify(manifest, null, 2);
+  await writeFile(path, new TextEncoder().encode(content));
+  return path;
+}
+
+export async function importBackup(): Promise<void> {
+  const path = await openDialog({
+    filters: [{ name: 'Psysonic Backup', extensions: ['psybkp'] }],
+    multiple: false,
+    title: 'Import Psysonic Backup',
+  });
+
+  if (!path || typeof path !== 'string') return;
+
+  const raw = await readTextFile(path);
+  const manifest = JSON.parse(raw);
+
+  if (typeof manifest.version !== 'number' || !manifest.stores || typeof manifest.stores !== 'object') {
+    throw new Error('invalid_backup');
+  }
+
+  for (const [key, value] of Object.entries(manifest.stores)) {
+    localStorage.setItem(key, JSON.stringify(value));
+  }
+
+  window.location.reload();
+}