fix(company): bust browser cache after logo change via gallery

Logo images were cached for 30 days by nginx. After selecting a new logo
from the gallery, the browser still showed the old/placeholder image.
- Add cache-bust query param (?v=timestamp) to logo <img> src
- Update company.last_updated when logo is confirmed
- Use Date.now() redirect instead of reload() after confirm

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

blueprints/api/routes_company.py

@@ -649,6 +649,10 @@ def api_fetch_company_logo(company_id):
         if action == 'confirm':
             index = data.get('index', 0)
             ok = service.confirm_candidate(company.slug, index)
+            if ok:
+                from datetime import datetime
+                company.last_updated = datetime.utcnow()
+                db.commit()
             logger.info(f"Logo candidate #{index} confirmed for {company.name} by {current_user.email}")
             return jsonify({'success': ok, 'message': 'Logo zapisane' if ok else 'Nie znaleziono kandydata'})
 

templates/company_detail.html

@@ -931,7 +931,7 @@
 
 <div class="company-header">
     <div class="company-logo-header {{ 'dark-bg' if company.logo_dark_bg else '' }}">
-        <img src="{{ url_for('static', filename='img/companies/' ~ company.slug ~ '.webp') }}"
+        <img src="{{ url_for('static', filename='img/companies/' ~ company.slug ~ '.webp') }}?v={{ company.last_updated.strftime('%s') if company.last_updated else '' }}"
              alt="{{ company.name }}"
              onerror="if(!this.dataset.triedSvg){this.dataset.triedSvg='1';this.src=this.src.replace('.webp','.svg')}else{this.parentElement.style.display='none'}">
     </div>
@@ -5306,7 +5306,7 @@ function updateLogoStep(stepId, status, message) {
         document.getElementById('logoGalleryOverlay').classList.remove('active');
         showToast('Logo zapisane!', 'success', 3000);
         await sleep(2000);
-        window.location.reload();
+        window.location.href = window.location.pathname + '?logo=' + Date.now();
     });
 
     // Close gallery on backdrop click