fix: onboarding back and contract blocking

apps/edr-freight-web/portal/src/components/onboarding/OnboardingWizardDialog.tsx

@@ -286,9 +286,13 @@ export default function OnboardingWizardDialog({
     });
   }, [roles, nationality, startMutation]);
 
-  // Note: no "back to role selection" — once the draft is created the role(s)
-  // are fixed; the form's first-step Back is a no-op so progress never resets.
-  const handleBackToRoles = useCallback(() => { }, []);
+  // Back from the form's first step returns to nationality/role selection.
+  // Safe to re-enter: startOnboarding is idempotent — it reuses the existing
+  // draft, refreshes the nationality and creates only roles that don't exist yet.
+  const handleBackToRoles = useCallback(() => {
+    setStartError(null);
+    setPhase("nationality-role");
+  }, []);
 
   // Save the current step's fields to the draft (PATCH /profile). Returns the
   // server error message on failure so the form can show it (e.g. duplicate TIN).
@@ -359,7 +363,6 @@ export default function OnboardingWizardDialog({
   // The active step across the whole journey, driving the header + progress pill.
   const activeStep: WizardStep = phase === "form" ? formStep : phase;
   const stepMeta = STEP_META[activeStep];
-  console.log({ stepMeta, activeStep, STEP_META });
   const activeIdx = WIZARD_STEPS.indexOf(activeStep);
 
   // Closing from the congratulations panel also clears the completed flag so a
@@ -403,7 +406,6 @@ export default function OnboardingWizardDialog({
     onSubmit: handleSubmit,
     isPending: finishMutation.isPending,
     onBack: handleBackToRoles,
-    hideFirstStepBack: true,
     initialStep: effectiveResumeStep,
     resyncOpen: opened,
     onStepChange: handleStepChange,