feat: Improve onboarding wizard UI, UX and dark mode support

This commit implements multiple improvements to the onboarding wizard:

**1. Unified UI Components:**
- Created InfoCard component for consistent "why is important" blocks across all steps
- Created TemplateCard component for consistent template displays
- Both components use global CSS variables for proper dark mode support

**2. Initial Stock Entry Step Improvements:**
- Fixed title/subtitle positioning using unified InfoCard component
- Fixed missing count bug in warning message (now uses {{count}} interpolation)
- Fixed dark mode colors using CSS variables (--color-success, --color-info, etc.)
- Changed next button title from "completar configuración" to "Continuar →"
- Implemented stock creation API call using useAddStock hook
- Products with stock now properly save to backend on step completion

**3. Dark Mode Fixes:**
- Fixed QualitySetupStep: Enhanced button selection visibility with rings and shadows
- Fixed TeamSetupStep: Enhanced role selection visibility with rings and shadows
- Fixed AddressAutocomplete: Replaced all hardcoded colors with CSS variables
- All dropdown results, icons, and hover states now properly adapt to dark mode

**4. Streamlined Wizard Flow:**
- Removed POI Detection step from wizard (step previously added complexity)
- POI detection now runs automatically in background after tenant registration
- Non-blocking approach ensures users aren't delayed by POI detection
- Removed Revision step (setup-review) as it adds no user value
- Completion step is now the final step before dashboard

**5. Backend Updates:**
- Updated onboarding_progress.py to remove poi-detection from ONBOARDING_STEPS
- Updated onboarding_progress.py to remove setup-review from ONBOARDING_STEPS
- Updated step dependencies to reflect streamlined flow
- POI detection documented as automatic background process

All changes maintain backward compatibility and use proper TypeScript types.

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

@@ -274,10 +274,10 @@ export const QualitySetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplet
                       console.log('Check type clicked:', option.value, 'current:', formData.check_type);
                       setFormData(prev => ({ ...prev, check_type: option.value }));
                     }}
-                    className={`p-3 text-left border rounded-lg transition-colors cursor-pointer ${
+                    className={`p-3 text-left border-2 rounded-lg transition-all cursor-pointer ${
                       formData.check_type === option.value
-                        ? 'border-[var(--color-primary)] bg-[var(--color-primary)]/10'
-                        : 'border-[var(--border-secondary)] hover:border-[var(--border-primary)]'
+                        ? 'border-[var(--color-primary)] bg-[var(--color-primary)]/20 shadow-lg ring-2 ring-[var(--color-primary)]/30'
+                        : 'border-[var(--border-secondary)] hover:border-[var(--color-primary)]/50 hover:bg-[var(--bg-secondary)]'
                     }`}
                   >
                     <div className="text-lg mb-1">{option.icon}</div>
@@ -325,10 +325,10 @@ export const QualitySetupStep: React.FC<SetupStepProps> = ({ onUpdate, onComplet
                           : [...prev.applicable_stages, option.value]
                       }));
                     }}
-                    className={`p-2 text-sm text-left border rounded-lg transition-colors cursor-pointer ${
+                    className={`p-2 text-sm text-left border-2 rounded-lg transition-all cursor-pointer ${
                       formData.applicable_stages.includes(option.value)
-                        ? 'border-[var(--color-primary)] bg-[var(--color-primary)]/10 text-[var(--color-primary)]'
-                        : 'border-[var(--border-secondary)] text-[var(--text-secondary)] hover:border-[var(--border-primary)]'
+                        ? 'border-[var(--color-primary)] bg-[var(--color-primary)]/20 text-[var(--color-primary)] font-semibold shadow-md ring-1 ring-[var(--color-primary)]/30'
+                        : 'border-[var(--border-secondary)] text-[var(--text-secondary)] hover:border-[var(--color-primary)]/50 hover:bg-[var(--bg-secondary)]'
                     }`}
                   >
                     {option.label}