feat: 🎸 preferred clients section on settings page

[priya-patel04]

Description

Adds a new Preferred Clients section on Settings Page.

🎟️ Jira ticket

Screenshots (if appropriate)

Mac:

Screen.Recording.2025-10-27.at.12.35.57.PM.mov

None detected:

Screen.Recording.2025-10-28.at.5.24.31.PM.mov

Windows:

Screen.Recording.2025-10-27.at.1.06.55.PM.mov

None detected:

Screen.Recording.2025-10-28.at.6.05.18.PM.mov

How to Test

1. Navigate to Settings page and verify a new Preferred Clients section is rendered
   • Mac: Windows App should be selected by default as your preferred client
   • Windows: Mstc should be selected by default as your preferred client
2. Test updating your preferred client to None. Reopen the app and verify None selection persists.
3. Verfiy electron stores/update preferred client selection in the config:
   • Mac: /Library/Application Support/Boundary/config.json
   • Windows: \AppData\Roaming\Boundary\config.json

Checklist

• I have added before and after screenshots for UI changes
• I have added JSON response output for API changes
• I have added steps to reproduce and test for bug fixes in the description
• I have commented on my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have added a11y-tests label to run a11y audit tests if needed

PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.
• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've documented the impact of any changes to security controls.
  Examples of changes to security controls include using new access control methods, adding or removing logging pipelines, etc.

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Project	Deployment	Preview	Comments	Updated (UTC)
boundary-ui	Ready	Preview	Comment	Oct 31, 2025 9:28pm
boundary-ui-desktop	Ready	Preview	Comment	Oct 31, 2025 9:28pm

[hashicc]

This looks great! Would this work already with a test desktop client build? I can give that a try tomorrow if so.

My feedback is:

• another test (or test assertion in the existing test) to check that the data is responding from the change event
• try and assign these known set of values to constants that are exported from the best source module (maybe ui/desktop/app/services/rdp.js)

[priya-patel04]

This looks great! Would this work already with a test desktop client build? I can give that a try tomorrow if so.

My feedback is:

• another test (or test assertion in the existing test) to check that the data is responding from the change event
• try and assign these known set of values to constants that are exported from the best source module (maybe ui/desktop/app/services/rdp.js)

Yes, we can test with local DC build.

[hashicc]

I think the logic around getting the clients could be less coupled in how it's set up. Also if the methods have several conditions in a service and they're not exercised by the rendering or acceptance tests it would be good to have unit tests around them.

I think there are some cases here that might need a few acceptance since they rely on certain state being set in the beforeModel hook and it would be good to ensure that the data coming from ipc is set up on the rdp service and then seen on the settings. That could be done up in a follow-up PR though.

[hashicc]

🚀 Looks good! Thanks for all the work on this

[DhariniJeeva]

looks great! 🎉