Adds Google authentication alongside GitHub on the sign-in page.

[moehdotdev]

feat(auth): add Google OAuth sign-in support

Adds Google authentication alongside GitHub on the sign-in page.

Changes:

• Added Google OAuth provider to Convex auth configuration
• Added Google credentials to .env.example
• Added Google sign-in button in the UI
• Implemented handleGoogle sign-in flow
• Updated loading states to support both GitHub and Google
• Adjusted auth button layout to a two-column grid

Flow:

1. User clicks the Google button on the sign-in page
2. handleGoogle() triggers signIn("google")
3. User is redirected to Google's OAuth consent screen
4. After authorization, Google redirects back to the Convex callback
5. Convex creates/authenticates the user session and returns them to the app

This PR expands authentication options and improves onboarding by allowing users to sign in with either GitHub or Google.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
swap	Building	Preview, Comment	Mar 8, 2026 1:54pm