feat(interface): add lang selector in settings page

[FredGuiou]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 35.71429% with 27 lines in your changes missing coverage. Please review.

Project coverage is 56.45%. Comparing base (28ee6a9) to head (024bb89).
Report is 202 commits behind head on master.

Files with missing lines	Patch %	Lines
src/commands/lang.js	6.66%	14 Missing ⚠️
workspaces/server/src/config.js	7.14%	13 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##            master     #525       +/-   ##
============================================
- Coverage   100.00%   56.45%   -43.55%     
============================================
  Files           15       38       +23     
  Lines          649     2790     +2141     
  Branches         0        1        +1     
============================================
+ Hits           649     1575      +926     
- Misses           0     1215     +1215     

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[Copilot]

Pull Request Overview

This PR adds a new language selector to the settings page, wires it end-to-end through the server config and CLI, and updates tests and translations accordingly.

• Persist a lang field in config get/set and in the HTTP server
• Add a dropdown in the web UI and reload on language change
• Extend CLI lang command, update client code, tests, and translation keys

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
workspaces/server/src/config.js	Include lang in config retrieval and fallback
workspaces/server/test/httpServer.test.js	Adjust HTTP PUT /config test to expect lang
workspaces/server/test/config.test.js	Add lang assertions in config tests
views/index.html	Add <select> for language choice in settings UI
src/commands/lang.js	Persist new lang to cache in CLI lang command
public/main.js	Reload page and apply lang when settings change
public/components/views/settings/settings.js	Hook up langSelector and dispatch updated lang
i18n/french.js & i18n/english.js	Add translation keys for language panel

Comments suppressed due to low confidence (3)

src/commands/lang.js:19

• The command’s cache update logic inside the try block isn’t covered by existing tests. Add tests to ensure the CLI lang command persists the new language in appCache.

  try {

public/components/views/settings/settings.js:234

• This assignment reverts the updated lang back to the old value. You should assign this.config = newConfig so the new language persists in the component state.

    this.config = { ...newConfig, lang: this.config.lang };

[FredGuiou]

@fraxken Here is a proposal for lang application management in settings page.
Stay to complete testing, but your comments are welcome in a first review. 🙂

[fraxken]

I think we should probably add a sub key for that (right now we only have two but what if tomorrow we have 15?)