[Android | iOS] Add borderRadius to mentions in chat

[war-in]

Explanation of Change

React Native doesn't support borderRadius on nested <Text> components (only the outermost <Text> gets it). This means mentions in chat messages render with sharp corners on native, even though the live markdown preview (which uses custom rendering) shows them with rounded corners.

This PR adds a React Native patch (react-native+0.83.1+034+nested-text-border-radius.patch) that enables borderRadius support for nested <Text> backgrounds on both iOS and Android:

• C++ (shared): Adds a std::optional<Float> borderRadius field to TextAttributes, wired through BaseTextProps and attribute conversions.
• Android: Introduces a custom DrawCommandSpan with ReactBackgroundDrawSpan that draws rounded-rect backgrounds behind text spans.
• iOS: Adds a custom NSLayoutManager subclass (RCTTextLayoutManagerWithBorderRadius) that overrides fillBackgroundRectArray to draw rounded rectangles using UIBezierPath, with per-line corner rounding for multiline spans.

With this patch, mentions in chat now correctly render with borderRadius, matching the live markdown preview appearance.

Fixed Issues

$ #78873
PROPOSAL:

Tests

1. Open any chat that contains mentions (e.g. @someone@somecompany.com or #room or @here)
2. Verify that mentions in chat messages have rounded corners (borderRadius) on both iOS and Android
3. Verify the rounded corners match the appearance in the live markdown preview (composer)
4. Send a new message with a mention and verify it also renders with rounded corners
5. Test with multiline messages containing mentions to verify per-line rounding works correctly

Offline tests

N/A - This is a native rendering change that doesn't depend on network state.

QA Steps

Same as tests

PR Author Checklist

• I linked the correct issue in the ### Fixed Issues section above
• I wrote clear testing steps that cover the changes made in this PR
  • I added steps for local testing in the Tests section
  • I added steps for the expected offline behavior in the Offline steps section
  • I added steps for Staging and/or Production testing in the QA steps section
  • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
  • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
• I included screenshots or videos for tests on all platforms
• I ran the tests on all platforms & verified they passed on:
  • Android: Native
  • Android: mWeb Chrome
  • iOS: Native
  • iOS: mWeb Safari
  • MacOS: Chrome / Safari
• I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
• I followed proper code patterns (see Reviewing the code)
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  • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
  • I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
    • If any non-english text was added/modified, I used JaimeGPT to get English > Spanish translation. I then posted it in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
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  • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
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  • A similar style doesn't already exist
  • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG))
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• If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
• If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
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• If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
• I added unit tests for any new feature or bug fix in this PR to help automatically prevent regressions in this user flow.
• If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native

Android: mWeb Chrome

N/A - patch only affects native rendering

iOS: Native

iOS: mWeb Safari

N/A - patch only affects native rendering

MacOS: Chrome / Safari

N/A - patch only affects native rendering

[github-actions]

⚠️ This PR is possibly changing native code and/or updating libraries, it may cause problems with HybridApp. Please check if any patch updates are required in the HybridApp repo and run an AdHoc build to verify that HybridApp will not break. Ask Contributor Plus for help if you are not sure how to handle this. ⚠️

[codecov]

Codecov Report

✅ Changes either increased or maintained existing code coverage, great job!

Files with missing lines	Coverage Δ
src/components/Image/BaseImage.native.tsx	54.54% <100.00%> (ø)
src/components/ImageSVG/index.android.tsx	100.00% <100.00%> (ø)
src/components/ImageSVG/index.ios.tsx	100.00% <100.00%> (ø)
src/hooks/useThemePreference.ts	100.00% <100.00%> (ø)
...omposerWithSuggestions/ComposerWithSuggestions.tsx	58.87% <100.00%> (ø)
.../SignInPageLayout/BackgroundImage/index.native.tsx	66.66% <ø> (ø)
...ts/AddressSearch/isCurrentTargetInsideContainer.ts	0.00% <0.00%> (ø)
src/components/Image/BaseImage.tsx	0.00% <0.00%> (ø)
src/components/PopoverProvider/index.tsx	0.00% <0.00%> (ø)
...equestStepScan/NavigationAwareCamera/WebCamera.tsx	0.00% <0.00%> (ø)
... and 5 more
... and 12 files with indirect coverage changes

[github-actions]

🚧 @puneetlath has triggered a test Expensify/App build. You can view the workflow run here.

[j-piasecki]

The implementation itself looks good to me!

[melvin-bot]

@parasharrajat Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

[chatgpt-codex-connector]

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[war-in]

@parasharrajat kind bump 😄

[parasharrajat]

Sure, I will check this asap.

[mateuuszzzzz]

Kind bump 😅 cc: @parasharrajat

[parasharrajat]

Screenshots

🔲 iOS / native

🔲 iOS / Safari

🔲 MacOS / Chrome

🔲 Android / Chrome

🔲 Android / native

[war-in]

@puneetlath could you retrigger the build? 🙏 Looks like there are some issues with it (#84556 (comment))

[puneetlath]

Sorry, just got back from OOO. Triggered a build now.

[github-actions]

🚧 @puneetlath has triggered a test Expensify/App build. You can view the workflow run here.

[github-actions]

🚧 @puneetlath has triggered a test Expensify/App build. You can view the workflow run here.

[github-actions]

🚧 @puneetlath has triggered a test Expensify/App build. You can view the workflow run here.

[parasharrajat]

Screenshots

🔲 iOS / native

Not able to build.

🔲 MacOS / Chrome

16.05.2026_22.02.23_REC.mp4

🔲 Android / native

[OSBotify]

✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

[github-actions]

🚧 @puneetlath has triggered a test Expensify/App build. You can view the workflow run here.

[github-actions]

🧪🧪 Use the links below to test this adhoc build on Android, iOS, and Web. Happy testing! 🧪🧪
Built from App PR #84556.

Android 🤖	iOS 🍎
https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-android-Adhoc-1fae2f7a78f-af588c3-6d9856b07ab34c5eab22feee7eb23f1d9118a892/index.html	https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-ios-device-AdHoc-1fae2f7-af588c3-590ba81b346dec41c80ead1a0a39f25f2020126f/index.html

Web 🕸️
https://84556.pr-testing.expensify.com

---

👀 View the workflow run that generated this build 👀

[OSBotify]

🚀 Deployed to staging by https://github.com/puneetlath in version: 9.4.8-0 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	failure ❌
🍎 iOS 🍎	success ✅

Bundle Size Analysis (Sentry):

• iOS

[OSBotify]

🚀 Deployed to staging by https://github.com/puneetlath in version: 9.4.8-0 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅

Bundle Size Analysis (Sentry):

• Android
• iOS

[OSBotify]

🚀 Deployed to production by https://github.com/puneetlath in version: 9.4.8-3 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅