feat: show private key list as full screen

[gantunesr]

Description

The multichain private key list previously used a BottomSheet and transparent modal presentation. It now uses the same full-screen pattern as Address List: HeaderCompactStandard via useLayoutEffect / navigation.setOptions, a flex root, and slide-in card options on the parent stack screen.

Cancel uses navigation.goBack() instead of closing a sheet. BottomSheet-specific code (gesture scroll ref context, RNGH ScrollView wrapper for FlashList, panGestureHandlerProps) was removed.

Changelog

CHANGELOG entry: Updated multichain private key list to open as a full screen instead of a bottom sheet

Related issues

Fixes: #28809
Fixes: https://consensyssoftware.atlassian.net/browse/MUL-1611

Manual testing steps

Feature: Multichain private key list full screen

  Scenario: Open private key list from account group
    Given the user is on multichain account group details with a wallet that supports exported keys

    When the user opens the private key list flow and enters the wallet password
    Then the screen is full screen with a back control in the header and the address list scrolls as expected

    When the user taps Cancel before unlocking
    Then the app navigates back to the previous screen

Screenshots/Recordings

Before

N/A

After

Screen.Recording.2026-04-15.at.8.34.08.PM.mov

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• 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 format if applicable
• I've applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• 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.

---

Note

Medium Risk
Changes navigation/presentation for the private key export list (a sensitive flow), which could impact back navigation, header behavior, or modal stacking. No changes to key export/verification logic, so risk is mainly UI/navigation regressions.

Overview
Shows the multichain private key list as a full-screen screen instead of a bottom sheet, including adding a HeaderCompactStandard-style header via navigation.setOptions and simplifying the layout to a flex-root view.

Updates the parent navigator configuration for Routes.MULTICHAIN_ACCOUNTS.PRIVATE_KEY_LIST to use an opaque card background and a horizontal slide-in interpolator (replacing transparentModal). Removes BottomSheet-specific gesture/scroll wiring and updates tests to assert the header title via setOptions, adding a back button testID (PrivateKeyListIds.GO_BACK).

^{Reviewed by Cursor Bugbot for commit b0d6ed1. Bugbot is set up for automated code reviews on this repo. Configure here.}

[owencraston]

Overall looking good. The full scree private key screen looks good but the password input screen looks a bit odd with all the info floating at the top. In my opinion the password input screen makes sense to be a bottom sheet since its contextual but I don't feel strongly. Curious what @DostoevskysPiano thinks.

screen-20260414-192712-1776209212209.mp4

[github-actions]

🔍 Smart E2E Test Selection

• Selected E2E tags: SmokeAccounts, SmokeConfirmations, SmokeIdentity, SmokeNetworkAbstractions, SmokeNetworkExpansion, SmokeTrade, SmokeWalletPlatform, SmokeCard, SmokePerps, SmokeRamps, SmokeMultiChainAPI, SmokePredictions, SmokeSeedlessOnboarding, FlaskBuildTests
• Selected Performance tags: @PerformanceAccountList, @PerformanceOnboarding, @PerformanceLogin, @PerformanceSwaps, @PerformanceLaunch, @PerformanceAssetLoading, @PerformancePredict, @PerformancePreps
• Risk Level: high
• AI Confidence: %

click to see 🤖 AI reasoning details

E2E Test Selection:
Fallback: AI analysis did not complete successfully. Running all tests.

Performance Test Selection:
Fallback: AI analysis did not complete successfully. Running all performance tests.

View GitHub Actions results

[codecov-commenter]

Codecov Report

❌ Patch coverage is 83.33333% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.28%. Comparing base (aa88381) to head (a7bdb4d).
⚠️ Report is 103 commits behind head on main.

Files with missing lines	Patch %	Lines
...ltichainAccounts/PrivateKeyList/PrivateKeyList.tsx	82.35%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #28703      +/-   ##
==========================================
+ Coverage   82.19%   82.28%   +0.09%     
==========================================
  Files        4987     5033      +46     
  Lines      131211   132087     +876     
  Branches    29316    29481     +165     
==========================================
+ Hits       107843   108688     +845     
+ Misses      16017    16015       -2     
- Partials     7351     7384      +33     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
92.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

✅ E2E Fixture Validation — Schema is up to date
11 value mismatches detected (expected — fixture represents an existing user).
View details

[montelaidev]

Lgtm. Tested on ios