feat: Implement organization-based SSO login with an AsyncCombobox and add logo variant branding options.

services/cms-service/migrations/20260226000001_add_logo_variant.sql

@@ -0,0 +1,3 @@
+-- Add logo_variant to organizations
+ALTER TABLE organizations ADD COLUMN IF NOT EXISTS logo_variant VARCHAR(20) DEFAULT 'standard';
+COMMENT ON COLUMN organizations.logo_variant IS 'Header logo display style (standard or wide)';