…30106)

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## **Description**

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Write a short description of the changes included in this pull request,
also include relevant motivation and context. Have in mind the following
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2. What is the improvement/solution?
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Revamps the notifications settings UX into section-based configuration
(wallet activity, perps, Social AI, marketing) with a new
NotificationSettingsSection screen and updated navigators to route into
it.

## **Changelog**

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CHANGELOG entry: Revamp notification settings and enrich them with
several sections

## **Related issues**

Core PR: MetaMask/core#8784
Fixes: https://consensyssoftware.atlassian.net/browse/GE-13

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
```

## **Screenshots/Recordings**

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### **Before**

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### **After**

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https://github.com/user-attachments/assets/9171d271-dd41-4c5d-acfe-c081d8a383dd


https://github.com/user-attachments/assets/b28bfcec-631d-469f-b4f4-394731944fb2

## **Pre-merge author checklist**

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- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I've included tests if applicable
- [ ] I've documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] I've applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

#### Performance checks (if applicable)

- [ ] I've tested on Android
  - Ideally on a mid-range device; emulator is acceptable
- [ ] I've tested with a power user scenario
- Use these [power-user
SRPs](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/edit-v2/401401446401?draftShareId=9d77e1e1-4bdc-4be1-9ebb-ccd916988d93)
to import wallets with many accounts and tokens
- [ ] I've instrumented key operations with Sentry traces for production
performance metrics
- See [`trace()`](/app/util/trace.ts) for usage and
[`addToken`](/app/components/Views/AddAsset/components/AddCustomToken/AddCustomToken.tsx#L274)
for an example

For performance guidelines and tooling, see the [Performance
Guide](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/400085549067/Performance+Guide+for+Engineers).

## **Pre-merge reviewer checklist**

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- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.



<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Moderate risk: refactors notifications settings/navigation and
introduces new AUS-backed preference read/merge/write logic, which could
affect persistence and toggle behavior if the storage contract or
caching assumptions are wrong.
> 
> **Overview**
> Revamps notification settings into a **section-based UI** (wallet
activity, perps, Social AI, marketing) with a new
`NotificationSettingsSection` screen for per-section push/in-app toggles
and extra content (wallet-activity account selection + marketing
disclaimer + embedded Social AI preferences).
> 
> Switches preference sourcing/persistence to **Authenticated User
Storage (AUS)** via a new `useNotificationStoragePreferences` hook
(shared query key, optimistic cache updates, read-merge-write PUT, and
refetch-on-failure), and updates Social AI preferences to reuse this
shared storage flow.
> 
> Updates navigation and headers to support the new section route
(`Routes.SETTINGS.NOTIFICATION_SETTINGS_SECTION`), modernizes the
notifications list header UI, and removes legacy/developer-only pieces
(e.g., `resetNotifications`, `SettingsNotification`, and the Social
Leaderboard `NotificationPreferencesView`) while adjusting tests
accordingly.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
afee7a6. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->