Priority

Critical (blocking my workflow)

Feature Description

Implement a new authentication flow using Supertokens' inbuilt FDI endpoints (see https://app.swaggerhub.com/apis/supertokens/FDI/3.0.0). Customize endpoints where necessary to best fit Compass requirements.

• Replace the current flow with a solution leveraging FDI endpoints directly.
• Address the reauthentication issues described in User is required to re-auth frequently | 401 response from /api/auth/google #1152 as part of this implementation.

Use Case

Switching to Supertokens FDI endpoints will:

• Save engineering time by using a stable, well-documented foundation.
• Make it easier to investigate Supertokens auth issues.
• Resolve reauth/401 errors seen in the current Google OAuth flow (User is required to re-auth frequently | 401 response from /api/auth/google #1152).
• Improve overall user experience and backend reliability.

Additional Context

Reference:

• Supertokens FDI API spec: https://app.swaggerhub.com/apis/supertokens/FDI/3.0.0
• Parent issue: User is required to re-auth frequently | 401 response from /api/auth/google #1152
  Add other context for technical design/architecture here as implementation details emerge.