feat(web): show notice instead of app in Tesla in-car browsers

[abcdmku]

Summary

• Detect Tesla in-car browser user agents (Tesla/<version> token; QtCarBrowser on older Model S/X) in the web entry point
• When detected, render only the text "T3 Code does not endorse this behavior" instead of the app

Test plan

• npm run typecheck in apps/web passes
• Spoof UA containing Tesla/2024.x and load the web UI: only the notice renders
• Normal browsers and Electron are unaffected (UA does not match)

Screenshots

Before (normal browser)

After (Tesla in-car UA)

🤖 Generated with Claude Code

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Note

Low Risk
Small client-side UA gate at bootstrap only; no auth, data, or API changes. False positives would hide the app for matching UAs.

Overview
Tesla in-car browsers no longer boot the web app. main.tsx matches Tesla/ or QtCarBrowser in the user agent and renders a centered “T3 Code does not endorse this behavior” message instead of Clerk, auth, and AppRoot. Other browsers and Electron are unchanged.

^{Reviewed by Cursor Bugbot for commit a231dfb. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Show static notice instead of app for Tesla browsers in main.tsx

• Adds isTeslaCarBrowser detection by testing navigator.userAgent against /Tesla\/|QtCarBrowser/
• Updates the ReactDOM.createRoot bootstrap in main.tsx to render a centered static message div when the Tesla browser is detected
• Behavioral Change: Tesla in-car browsers bypass React.StrictMode and Clerk/ElectronClerk providers, receiving a static message instead of mounting the full application

^{Macroscope summarized a231dfb.}

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[macroscopeapp]

One finding: the new Tesla gate renders an unstyled bare text node as the entire app UI, bypassing the app's full-screen surface and theme tokens. Details inline.

^{Posted via Macroscope — UI Consistency}

[macroscopeapp]

One consistency finding: the Tesla gate renders a bare text node as the entire app UI, bypassing the app's full-screen notice pattern and theme tokens.

^{Posted via Macroscope — UI Consistency}

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR adds a new user-agent-based runtime branch that replaces the application and authentication-provider tree with a Tesla-specific notice. Although the diff is small and isolated, it changes the user-facing entry path and gates the main workflow for detected browsers.

^{You can add or adjust custom eligibility rules. Learn more.}

[PiquelChips]

Well that's not very fun