fix: skip companies with existing candidates in bulk discovery

Bulk query now excludes companies that already have pending/accepted
candidates, so only truly new companies are processed via Brave API.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blueprints/admin/routes_website_discovery.py

@@ -61,9 +61,17 @@ def discover_websites_bulk():
         _bulk_jobs[job_id] = {'status': 'running', 'processed': 0, 'total': 0, 'log': []}
         db = SessionLocal()
         try:
+            # Skip companies that already have a pending/accepted candidate
+            already_have = set(
+                r[0] for r in db.query(WebsiteDiscoveryCandidate.company_id).filter(
+                    WebsiteDiscoveryCandidate.status.in_(['pending', 'accepted'])
+                ).distinct().all()
+            )
+
             companies = db.query(Company).filter(
                 Company.status.in_(['active', 'pending']),
                 (Company.website == None) | (Company.website == ''),
+                ~Company.id.in_(already_have) if already_have else True,
             ).order_by(Company.name).limit(50).all()
 
             _bulk_jobs[job_id]['total'] = len(companies)
@@ -79,7 +87,7 @@ def discover_websites_bulk():
                 elif result.get('status') == 'exists':
                     status_text += "kandydat już istnieje"
                 else:
-                    status_text += result.get('error', 'błąd')
+                    status_text += result.get('error', 'brak wyników')
 
                 # Update processed AFTER building status text — atomic from poll perspective
                 _bulk_jobs[job_id]['log'].append(status_text)