Fix auth loading state getting stuck on protected routes

[fuzziecoder]

Motivation

• The app's protected routes could remain stuck showing Loading... when the initial Supabase session retrieval hangs or never resolves. This causes poor UX on login-protected pages.

Description

• Updated src/hooks/useAuth.ts to add a 5-second fallback timeout that clears the loading state if session init hangs by using window.setTimeout and setLoading(false).
• Hardened the initial supabase.auth.getSession() call with then/catch/finally so session fetch failures still result in loading being resolved.
• Added an isMounted guard and ensured cleanup of the timeout and Supabase subscription on unmount to prevent stale state updates and memory leaks.

Testing

• Ran npm run build in the project root and the production build completed successfully without errors.

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Codex Task

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[vercel]

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Project	Deployment	Actions	Updated (UTC)
flexi-roaster	Ready	Preview, Comment	Feb 24, 2026 3:07pm

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 3 additional findings.