Refactor authentication flow in LoginForm and LogoutPage to use next-auth. Remove unnecessary API calls and improve form handling. Update SSOPage to eliminate client token management. Adjust useApi hook to remove client token dependency.

db/postgresql/migrations/14_add_auth_columns/migration.sql

@@ -0,0 +1,14 @@
+-- Add optional email and email_verified to user table for Auth.js compatibility
+ALTER TABLE "user"
+  ADD COLUMN IF NOT EXISTS email varchar(255),
+  ADD COLUMN IF NOT EXISTS email_verified timestamptz;
+
+-- Ensure email is unique if present
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_indexes WHERE schemaname = current_schema() AND indexname = 'user_email_key'
+  ) THEN
+    CREATE UNIQUE INDEX user_email_key ON "user" (email);
+  END IF;
+END $$;