feat: Android download page, analysis retry and a collapsible search

- /android is a public page with the latest APK, the server address to copy
  and three install steps; linked from the sign-in screen and the profile menu
- failed audio analysis can be retried from the library page, which also shows
  the most common error; the analyzer no longer burns attempts on files that
  are missing because the disk is not mounted
- the top bar search folds into a round button and slides open on click, "/"
  or Ctrl+K

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/api-client/src/generated/schema.ts

@@ -880,6 +880,23 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/v1/admin/library/analysis/retry": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Вернуть в очередь треки, которые не удалось проанализировать (admin) */
+        post: operations["retryAnalysis"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/v1/admin/search/reindex": {
         parameters: {
             query?: never;
@@ -2012,6 +2029,8 @@ export interface components {
             done: number;
             failed: number;
             analyzer_ver: string | null;
+            /** @description Самая частая ошибка среди неудавшихся — подсказка, что чинить */
+            top_error: string | null;
         };
         /** @description Метрики волны за 7 дней */
         WaveMetrics: {
@@ -3355,6 +3374,29 @@ export interface operations {
             default: components["responses"]["Problem"];
         };
     };
+    retryAnalysis: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Сколько задач снова в очереди */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": {
+                        requeued: number;
+                    };
+                };
+            };
+            default: components["responses"]["Problem"];
+        };
+    };
     reindexSearch: {
         parameters: {
             query?: never;