fix(zopk): Use is_admin instead of role=='admin' for admin gating

Role field stores uppercase 'ADMIN' (from SystemRole enum). Use
is_admin boolean property which is synced by set_role() for reliable checks.

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

blueprints/public/routes.py

@@ -115,7 +115,7 @@ def index():
 
         # ZOPK Knowledge facts — admin only widget
         zopk_facts = []
-        if current_user.role == 'admin':
+        if current_user.is_admin:
             try:
                 from database import ZOPKKnowledgeFact, ZOPKNews
                 zopk_facts = db.query(ZOPKKnowledgeFact).join(ZOPKNews).filter(

blueprints/public/routes_zopk.py

@@ -102,7 +102,7 @@ def zopk_index():
 
         # Knowledge data — admin only
         knowledge_data = None
-        if current_user.is_authenticated and current_user.role == 'admin':
+        if current_user.is_authenticated and current_user.is_admin:
             knowledge_data = {
                 'total_facts': db.query(func.count(ZOPKKnowledgeFact.id)).scalar(),
                 'total_entities': db.query(func.count(ZOPKKnowledgeEntity.id)).filter(

templates/index.html

@@ -953,7 +953,7 @@
 </div>
 
 <!-- ZOPK Knowledge Widget — admin only -->
-{% if current_user.is_authenticated and current_user.role == 'admin' and zopk_facts %}
+{% if current_user.is_authenticated and current_user.is_admin and zopk_facts %}
 <div style="background: linear-gradient(135deg, #059669 0%, #047857 50%, #065f46 100%); border-radius: var(--radius-lg); padding: var(--spacing-lg); margin-bottom: var(--spacing-xl); color: white;" data-animate="fadeIn">
     <div style="display: flex; align-items: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-md);">
         <span style="font-size: 1.5rem;">💡</span>

templates/zopk/index.html

@@ -979,7 +979,7 @@
 </div>
 
 <!-- Knowledge Section — admin only -->
-{% if current_user.is_authenticated and current_user.role == 'admin' and knowledge_data %}
+{% if current_user.is_authenticated and current_user.is_admin and knowledge_data %}
 <section>
     <div class="section-header">
         <h2>Wiedza o regionie (baza wiedzy AI)</h2>
@@ -1345,7 +1345,7 @@
 {% endif %}
 
 <!-- Knowledge Graph — admin only -->
-{% if current_user.is_authenticated and current_user.role == 'admin' and knowledge_data %}
+{% if current_user.is_authenticated and current_user.is_admin and knowledge_data %}
 <section>
     <div class="section-header">
         <h2>Graf współwystępowania encji</h2>
@@ -1375,7 +1375,7 @@
 {% endblock %}
 
 {% block extra_js %}
-{% if current_user.is_authenticated and current_user.role == 'admin' and knowledge_data %}
+{% if current_user.is_authenticated and current_user.is_admin and knowledge_data %}
 // Knowledge Graph — D3.js
 (function() {
     if (typeof d3 === 'undefined') {