Remove console.log from AuthButton render path

[Copilot]

Addresses feedback from #13 to remove debug logging that exposes user email addresses in production.

Changes

• Removed console.log statement from AuthButton.tsx render path (lines 24-26)

Context
The statement logged user object and authentication state on every component render, causing log spam and leaking PII to browser console in production.

// Before
console.log('AuthButton render - user:', user, 'isAuthenticated:', isAuthenticated, 'isLoading:', isLoading);

// After
// (removed)

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Project	Deployment	Actions	Updated (UTC)
string-v2	Ready	Preview, Comment	Feb 12, 2026 4:06pm