Architect navigation buttons correctly: move from wizard-level to step-level

Fixed the navigation architecture to follow proper onboarding patterns:

**ARCHITECTURE CHANGE:**
- REMOVED: External navigation footer from UnifiedOnboardingWizard (Back + Continue buttons at wizard level)
- ADDED: Internal Continue buttons inside each setup wizard step component

**WHY THIS MATTERS:**
1. Onboarding should NEVER show Back buttons (users cannot go back)
2. Each step should be self-contained with its own Continue button
3. Setup wizard steps are reused in both contexts:
   - SetupWizard (/app/setup): Uses external StepNavigation component
   - UnifiedOnboardingWizard: Steps now render their own buttons

**CHANGES MADE:**

1. UnifiedOnboardingWizard.tsx:
   - Removed navigation footer (lines 548-588)
   - Now passes canContinue prop to steps
   - Steps are responsible for their own navigation

2. All setup wizard steps updated:
   - QualitySetupStep: Added onComplete, canContinue props + Continue button
   - SuppliersSetupStep: Modified existing button to call onComplete
   - InventorySetupStep: Added onComplete, canContinue props + Continue button
   - RecipesSetupStep: Added canContinue prop + Continue button
   - TeamSetupStep: Added onComplete, canContinue props + Continue button
   - ReviewSetupStep: Added onComplete, canContinue props + Continue button

3. Continue button pattern:
   - Only renders when onComplete prop exists (onboarding context)
   - Disabled based on canContinue prop from parent
   - Styled consistently across all steps
   - Positioned at bottom with border-top separator

**RESULT:**
- Clean separation: onboarding steps have internal buttons, no external navigation
- No Back button in onboarding (as required)
- Setup wizard still works with external StepNavigation
- Consistent UX across all steps

frontend/src/components/domain/onboarding/UnifiedOnboardingWizard.tsx

@@ -542,50 +542,9 @@ const OnboardingWizardContent: React.FC = () => {
             onUpdate={handleStepUpdate}
             isFirstStep={currentStepIndex === 0}
             isLastStep={currentStepIndex === VISIBLE_STEPS.length - 1}
+            canContinue={canContinue}
           />
         </CardBody>
-
-        {/* Navigation Footer - Only for setup wizard steps that don't render their own buttons */}
-        {['suppliers-setup', 'inventory-setup', 'recipes-setup', 'quality-setup', 'team-setup', 'setup-review'].includes(currentStep.id) && (
-          <div className="border-t border-[var(--border-primary)] px-6 py-4 bg-[var(--bg-secondary)]/30">
-            <div className="flex flex-col sm:flex-row items-center justify-between gap-3">
-              {/* Left side - Back button */}
-              <div className="w-full sm:w-auto">
-                {currentStepIndex > 0 && (
-                  <Button
-                    variant="secondary"
-                    onClick={() => setCurrentStepIndex(currentStepIndex - 1)}
-                    disabled={markStepCompleted.isPending}
-                    className="w-full sm:w-auto"
-                  >
-                    ← {t('onboarding:wizard.navigation.back', 'Atrás')}
-                  </Button>
-                )}
-              </div>
-
-              {/* Right side - Continue button */}
-              <div className="w-full sm:w-auto">
-                <Button
-                  variant="primary"
-                  onClick={handleStepComplete}
-                  disabled={!canContinue || markStepCompleted.isPending}
-                  className="w-full sm:w-auto min-w-[200px]"
-                >
-                  {markStepCompleted.isPending ? (
-                    <span className="flex items-center gap-2">
-                      <div className="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin" />
-                      {t('common:saving', 'Guardando...')}
-                    </span>
-                  ) : currentStepIndex === VISIBLE_STEPS.length - 1 ? (
-                    t('onboarding:wizard.navigation.finish', 'Finalizar →')
-                  ) : (
-                    t('onboarding:wizard.navigation.next', 'Continuar →')
-                  )}
-                </Button>
-              </div>
-            </div>
-          </div>
-        )}
       </Card>
     </div>
   );

frontend/src/components/domain/setup-wizard/steps/InventorySetupStep.tsx

@@ -8,7 +8,7 @@ import { UnitOfMeasure, IngredientCategory } from '../../../../api/types/invento
 import type { IngredientCreate, IngredientUpdate } from '../../../../api/types/inventory';
 import { ESSENTIAL_INGREDIENTS, COMMON_INGREDIENTS, PACKAGING_ITEMS, type IngredientTemplate, templateToIngredientCreate } from '../data/ingredientTemplates';
 
-export const InventorySetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
+export const InventorySetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplete, canContinue }) => {
   const { t } = useTranslation();
 
   // Get tenant ID
@@ -669,6 +669,19 @@ export const InventorySetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
           </p>
         </div>
       )}
+
+      {/* Continue button - only shown when used in onboarding context */}
+      {onComplete && (
+        <div className="flex justify-end mt-6 pt-6 border-t border-[var(--border-secondary)]">
+          <button
+            onClick={onComplete}
+            disabled={canContinue === false}
+            className="px-6 py-3 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium"
+          >
+            {t('setup_wizard:navigation.continue', 'Continue →')}
+          </button>
+        </div>
+      )}
     </div>
   );
 };

frontend/src/components/domain/setup-wizard/steps/QualitySetupStep.tsx

@@ -7,7 +7,7 @@ import { useAuthUser } from '../../../../stores/auth.store';
 import { QualityCheckType, ProcessStage } from '../../../../api/types/qualityTemplates';
 import type { QualityCheckTemplateCreate } from '../../../../api/types/qualityTemplates';
 
-export const QualitySetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
+export const QualitySetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplete, canContinue }) => {
   const { t } = useTranslation();
 
   // Get tenant ID and user
@@ -416,6 +416,19 @@ export const QualitySetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
           </p>
         </div>
       )}
+
+      {/* Continue button - only shown when used in onboarding context */}
+      {onComplete && (
+        <div className="flex justify-end mt-6 pt-6 border-t border-[var(--border-secondary)]">
+          <button
+            onClick={onComplete}
+            disabled={canContinue === false}
+            className="px-6 py-3 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium"
+          >
+            {t('setup_wizard:navigation.continue', 'Continue →')}
+          </button>
+        </div>
+      )}
     </div>
   );
 };

frontend/src/components/domain/setup-wizard/steps/RecipesSetupStep.tsx

@@ -17,7 +17,7 @@ interface RecipeIngredientForm {
   ingredient_order: number;
 }
 
-export const RecipesSetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplete }) => {
+export const RecipesSetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplete, canContinue }) => {
   const { t } = useTranslation();
 
   // Get tenant ID
@@ -793,6 +793,19 @@ export const RecipesSetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplet
         tenantId={tenantId}
         context="recipe"
       />
+
+      {/* Continue button - only shown when used in onboarding context */}
+      {onComplete && (
+        <div className="flex justify-end mt-6 pt-6 border-[var(--border-secondary)]">
+          <button
+            onClick={onComplete}
+            disabled={canContinue === false}
+            className="px-6 py-3 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium"
+          >
+            {t('setup_wizard:navigation.continue', 'Continue →')}
+          </button>
+        </div>
+      )}
     </div>
   );
 };

frontend/src/components/domain/setup-wizard/steps/ReviewSetupStep.tsx

@@ -8,7 +8,7 @@ import { useQualityTemplates } from '../../../../api/hooks/qualityTemplates';
 import { useCurrentTenant } from '../../../../stores/tenant.store';
 import { useAuthUser } from '../../../../stores/auth.store';
 
-export const ReviewSetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
+export const ReviewSetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplete, canContinue }) => {
   const { t } = useTranslation();
 
   // Get tenant ID
@@ -306,6 +306,19 @@ export const ReviewSetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
           </div>
         </>
       )}
+
+      {/* Continue button - only shown when used in onboarding context */}
+      {onComplete && (
+        <div className="flex justify-end mt-6 pt-6 border-t border-[var(--border-secondary)]">
+          <button
+            onClick={onComplete}
+            disabled={canContinue === false}
+            className="px-6 py-3 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium"
+          >
+            {t('setup_wizard:navigation.continue', 'Continue →')}
+          </button>
+        </div>
+      )}
     </div>
   );
 };

frontend/src/components/domain/setup-wizard/steps/SuppliersSetupStep.tsx

@@ -14,6 +14,7 @@ export const SuppliersSetupStep: React.FC<SetupStepProps> = ({
   onComplete,
   onSkip,
   onUpdate,
+  canContinue,
   isFirstStep,
   isLastStep
 }) => {
@@ -471,12 +472,11 @@ export const SuppliersSetupStep: React.FC<SetupStepProps> = ({
           )}
           <button
             type="button"
-            onClick={isLastStep ? () => onComplete?.() : onNext}
+            onClick={() => onComplete?.()}
             disabled={!canContinue}
             className="px-6 py-2 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium flex items-center gap-2"
           >
-            {isLastStep ? t('common:complete', 'Complete') : t('common:next', 'Next')}
-            →
+            {t('setup_wizard:navigation.continue', 'Continue →')}
           </button>
         </div>
       </div>

frontend/src/components/domain/setup-wizard/steps/TeamSetupStep.tsx

@@ -9,7 +9,7 @@ interface TeamMember {
   role: string;
 }
 
-export const TeamSetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
+export const TeamSetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplete, canContinue }) => {
   const { t } = useTranslation();
 
   // Local state for team members (will be sent to backend when API is available)
@@ -310,6 +310,19 @@ export const TeamSetupStep: React.FC<SetupStepProps> = ({ onUpdate }) => {
           </p>
         </div>
       )}
+
+      {/* Continue button - only shown when used in onboarding context */}
+      {onComplete && (
+        <div className="flex justify-end mt-6 pt-6 border-t border-[var(--border-secondary)]">
+          <button
+            onClick={onComplete}
+            disabled={canContinue === false}
+            className="px-6 py-3 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium"
+          >
+            {t('setup_wizard:navigation.continue', 'Continue →')}
+          </button>
+        </div>
+      )}
     </div>
   );
 };