…to light.

…ebuilt image

… explicit image tag

- Updated settings page to accept provider and code query parameters
- Added OAuth flow initiation when provider=GENERIC is detected
- Implemented authorization code exchange for existing users
- Added redirect logic for new user registration flow
- Fixed infinite loading spinner issue during SSO login from DashBrew
- Added proper error handling and user feedback for OAuth failures

This enables seamless SSO authentication from DashBrew to Postiz.

- Added toast to initiateOAuthFlow dependencies
- Added toast to handleOAuthCallback dependencies
- Fixes build error during deployment

- Moved useEffect after callback definitions
- Added eslint-disable comment for exhaustive-deps
- Fixes 'React Hook used before definition' build error

Testing if build failure is caused by OAuth implementation or pre-existing issue

- Changed OAuth redirect_uri from /settings to /auth?provider=generic
- The /auth page already has OAuth callback handling in register.tsx
- Added handling for existing users (login=true) to redirect to dashboard
- New users still see the registration form to enter company name

This fixes the 404 error when trying to login/register with Dashbrew OAuth.

- Added POST /auth/token endpoint to validate JWT tokens from external SSO
- Added validateAndRefreshToken method to auth service
- Updated register.tsx to handle 'token' URL parameter for SSO callbacks
- This enables login from Dashbrew which sends JWT tokens directly

When logging in from Dashbrew, users are redirected with a JWT token
in the URL. The frontend now detects this, validates the token via
the new endpoint, and redirects to the dashboard.

- Restored OAuth SSO handling in settings.component.tsx
- Settings page now properly handles /settings?provider=GENERIC flow
- When provider param is present, initiates OAuth authorization flow
- When code param is present, exchanges code for token
- Fixed GitHub Actions hashFiles timeout by simplifying cache key
  (removed **/*.js pattern that was scanning node_modules)

This enables the full OAuth flow when DashBrew redirects to:
https://social.dashbrew.app/settings?provider=GENERIC