Signing in

The login screen is a single field: your Meta access token. Everything else in the app is behind sign-in.

What you'll do

• Sign in with your access token.
• Toggle Light, Dark, or System theme from the login page.
• Sign out when you are done.

Step-by-step

1. Open the app. If you are not signed in, you land on the login screen automatically.
2. Paste your access token into the input.
3. Click Sign in. The app verifies the token with Meta before letting you in.
4. On success you are redirected to the home page. On failure you see a message with the reason.
5. Use the Theme toggle in the corner to switch between Light, Dark, and System modes. Your preference is remembered.

Where the token lives

• The token is stored in an encrypted session on the server, not in your browser.
• Only the server can read it, and it uses it to make Meta API calls on your behalf.
• If someone opens your browser dev tools they will not find the token.

Signing out

• Open the account menu in the top-right of the dashboard header.
• Choose Sign out. This clears your session and returns you to the login screen.

Troubleshooting

• You land back on the login screen after signing in successfully, your session was set with a different secret than the running server. If you host the app yourself, restart it with a consistent SESSION_SECRET.
• "Invalid token" message, make sure you pasted a user or system-user access token, not an app secret. See Generating an access token.
• Blank page after login, hard-refresh the browser. The theme system sometimes needs one extra tick to hydrate.