feat(core): improve mobile perf (#15317)

#### PR Dependency Tree


* **PR #15317** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Virtualized mobile navigation with shell navigation and interactive
swipe menus; coordinated mobile back handling with interactive
phases/state restoration.
* Added shared auth request proxy and message-port based token handling
across mobile and worker flows.
* **Bug Fixes**
  * Hydrated remote worker error stacks for calls and observable errors.
* Improved SQLite FTS/indexer and nbstore optional text handling;
refined docs-search ref parsing and notification loading/retry.
* **Refactor / UX**
* Modal focus-preservation and pointer behavior updates; improved mobile
menu controls and back gesture plugins.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/apps/android/src/plugins/mobile-back.ts

@@ -0,0 +1,17 @@
+import type { PluginListenerHandle } from '@capacitor/core';
+import { registerPlugin } from '@capacitor/core';
+
+type MobileBackEvent = {
+  phase: 'begin' | 'progress' | 'cancel' | 'commit';
+  progress?: number;
+};
+
+type MobileBackPlugin = {
+  setEnabled(options: { enabled: boolean }): Promise<void>;
+  addListener(
+    event: 'back',
+    listener: (event: MobileBackEvent) => void
+  ): Promise<PluginListenerHandle>;
+};
+
+export const MobileBack = registerPlugin<MobileBackPlugin>('MobileBack');

packages/frontend/apps/android/src/plugins/nbstore/definitions.ts

@@ -180,7 +180,7 @@ export interface NbStorePlugin {
     id: string;
     indexName: string;
     docId: string;
-  }) => Promise<{ text: string | null }>;
+  }) => Promise<{ text?: string | null }>;
   ftsGetMatches: (options: {
     id: string;
     indexName: string;

packages/frontend/apps/android/src/plugins/nbstore/index.ts

@@ -2,6 +2,7 @@ import {
   base64ToUint8Array,
   uint8ArrayToBase64,
 } from '@affine/core/modules/workspace-engine';
+import { normalizeNativeOptional } from '@affine/mobile-shared/nbstore/optional';
 import {
   decodePayload,
   MOBILE_BLOB_FILE_PREFIX,
@@ -405,7 +406,7 @@ export const NbStoreNativeDBApis: NativeDBApis = {
       indexName,
       docId,
     });
-    return result.text;
+    return normalizeNativeOptional(result.text);
   },
   ftsGetMatches: async function (
     id: string,