feat: Contentful banner integration

[mcbridemarci]

Description

This PR integrates Contentful into the mobile carousel, allowing promotional banners to be managed remotely rather than hardcoded in the app. Previously, all banners were statically defined in code. Now, they are dynamically fetched from Contentful, filtered based on activity dates, and rendered alongside predefined banners.

To keep the experience streamlined, I’ve also introduced a limit of 15 visible banners. This is an aesthetic decision to prevent the UI from being overwhelmed if too many are returned from Contentful.

The goal is to align the mobile experience with the existing MetaMask Extension Promotional banner and improve flexibility for teams.

Manual testing steps

1. Launch the app
2. Make sure the LaunchDarkly flag is enabled.
3. Observe banners fetched from Contentful are displayed. (Contentful Link)
4. Confirm hardcoded banners are still there and contentful banners are appended after.
5. Verify that banners beyond 15 are not displayed
6. Confirm that startDate and endDate are respected (These are optional fields)

Screenshots/Recordings

Before

After

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.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[mcbridemarci]

I have read the CLA Document and I hereby sign the CLA

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​rollup/​rollup-linux-x64-gnu@​4.41.0
	npm/​es-define-property@​1.0.1
	npm/​side-channel@​1.0.6 ⏵ 1.1.0			+21
	npm/​@​contentful/​rich-text-types@​16.7.0 ⏵ 16.8.5			+1
	npm/​side-channel-list@​1.0.0
	npm/​fast-copy@​2.1.7
	npm/​side-channel-map@​1.0.1
	npm/​dunder-proto@​1.0.1
	npm/​math-intrinsics@​1.1.0
	npm/​get-proto@​1.0.1
	npm/​p-throttle@​6.2.0
	npm/​side-channel-weakmap@​1.0.2
	npm/​call-bind-apply-helpers@​1.0.2
	npm/​es-object-atoms@​1.0.0 ⏵ 1.1.1	+1		+4
	npm/​json-pointer@​0.6.2
	npm/​get-intrinsic@​1.3.0
	npm/​call-bound@​1.0.4
	npm/​object-inspect@​1.13.1 ⏵ 1.13.4
	npm/​@​vercel/​stega@​0.1.2
	npm/​contentful-resolve-response@​1.9.3
	npm/​contentful-sdk-core@​9.2.0
	npm/​@​contentful/​content-source-maps@​0.11.16
	npm/​contentful@​11.5.23

View full report

[socket-security]

All alerts resolved. Learn more about Socket for GitHub.

This PR previously contained dependency changes with security issues that have been resolved, removed, or ignored.

Ignoring alerts on:

• npm/contentful@11.5.23

View full report

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 73.26733% with 27 lines in your changes missing coverage. Please review.

Project coverage is 69.81%. Comparing base (858d71f) to head (86e81ef).
Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/UI/Carousel/fetchCarouselSlidesFromContentful.ts	80.39%	2 Missing and 8 partials ⚠️
app/components/UI/Carousel/index.tsx	71.87%	7 Missing and 2 partials ⚠️
...onents/UI/Carousel/selectors/featureFlags/index.ts	50.00%	5 Missing and 2 partials ⚠️
app/components/UI/Carousel/constants.ts	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15731      +/-   ##
==========================================
+ Coverage   69.64%   69.81%   +0.16%     
==========================================
  Files        2483     2519      +36     
  Lines       53212    53789     +577     
  Branches     8139     8251     +112     
==========================================
+ Hits        37058    37551     +493     
- Misses      13760    13801      +41     
- Partials     2394     2437      +43     

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[github-actions]

Bitrise

❌❌❌ pr_smoke_e2e_pipeline failed on Bitrise! ❌❌❌

Commit hash: 4e51c82
Build link: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/caa77c20-f40b-4977-a451-be915e1a87ba

Note

• You can kick off another pr_smoke_e2e_pipeline on Bitrise by removing and re-applying the Run Smoke E2E label on the pull request

Tip

• Check the documentation if you have any doubts on how to understand the failure on bitrise

[Prithpal-Sooriya]

@SocketSecurity ignore npm/contentful@11.5.23

We are using the contentful package for better fetching management of contentful content. If this is a blocker, we can fallback to just using the API

[Prithpal-Sooriya]

Looking at the e2e failures, it is a known issue with confirmation smoke tests.
Related failure here: #15815

I am confident that these changes do not touch the confirmation smoke tests.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
83.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud