spelling mistake fix

Web/templates/student_cards_admin.html

@@ -229,7 +229,7 @@
 <div class="container">
     <div class="student-card-header">
         <div>
-            <h1>📚 Bibliotheksausweise (Bibliotek)</h1>
+            <h1>📚 Bibliotheksausweise (Bibliothek)</h1>
         </div>
         <div class="export-buttons">
             <a href="{{ url_for('student_card_barcode_download') }}" class="btn-print" style="background: #28a745;">📥 Alle Ausweise (PDF)</a>

Web/templates/tutorial.html

@@ -280,7 +280,7 @@
         <button type="button" data-target-step="0">1. Startseite</button>
         <button type="button" data-target-step="1">2. {{ 'Artikel erfassen' if is_admin else 'Artikel finden' }}</button>
         {% if library_module_enabled %}
-        <button type="button" data-target-step="2">3. Bibliotek</button>
+        <button type="button" data-target-step="2">3. Bibliothek</button>
         {% endif %}
         <button type="button" data-target-step="{{ '3' if library_module_enabled else '2' }}">4. Alltag</button>
       </div>
@@ -341,7 +341,7 @@
 
       {% if library_module_enabled %}
       <article class="workflow-step" data-step-index="2" data-step-key="library">
-        <h3>Bibliotek-Bereich</h3>
+        <h3>Bibliothek-Bereich</h3>
         <p>Dieser Bereich ist speziell für Bücher und Medienausleihe.</p>
         <ul>
           {% if is_admin %}
@@ -358,7 +358,7 @@
         </ul>
 
         <div class="tutorial-actions">
-          <a class="btn btn-outline-primary btn-sm" href="{{ url_for('library_view') }}">Zur Bibliotek</a>
+          <a class="btn btn-outline-primary btn-sm" href="{{ url_for('library_view') }}">Zur Bibliothek</a>
           {% if is_admin %}
           <a class="btn btn-outline-secondary btn-sm" href="{{ url_for('library_loans_admin') }}">Ausleihen ansehen</a>
           {% endif %}

Web/tenant.py

@@ -166,6 +166,11 @@ def _find_registered_tenant_id(candidate):
     return None
 
 
+def _resolve_registered_tenant_id(candidate):
+    """Return the canonical registered tenant id for a candidate, or None."""
+    return _find_registered_tenant_id(candidate)
+
+
 def _is_ip_host(hostname):
     hostname = str(hostname or '').strip()
     if not hostname:
@@ -185,6 +190,8 @@ def get_tenant_config(tenant_id=None):
         ctx = get_tenant_context()
         tenant_id = ctx.tenant_id if ctx and ctx.tenant_id else 'default'
 
+    tenant_id = _resolve_registered_tenant_id(tenant_id) or tenant_id
+
     if tenant_id in TENANT_REGISTRY:
         return TENANT_REGISTRY[tenant_id] or {}
         
@@ -481,20 +488,22 @@ class TenantContext:
             or request.args.get('tenantId', '').strip()
         )
         if tenant_from_query:
-            matched_tenant = _find_registered_tenant_id(tenant_from_query) or tenant_from_query
-            self.tenant_id = matched_tenant
-            self.config = get_tenant_config(matched_tenant)
-            session['tenant_id'] = matched_tenant
-            return self._get_db_name(matched_tenant)
+            matched_tenant = _resolve_registered_tenant_id(tenant_from_query)
+            if matched_tenant:
+                self.tenant_id = matched_tenant
+                self.config = get_tenant_config(matched_tenant)
+                session['tenant_id'] = matched_tenant
+                return self._get_db_name(matched_tenant)
 
         # Priority 1: X-Tenant-ID header (for testing/internal APIs)
         tenant_from_header = request.headers.get('X-Tenant-ID', '').strip()
         if tenant_from_header:
-            matched_tenant = _find_registered_tenant_id(tenant_from_header) or tenant_from_header
-            self.tenant_id = matched_tenant
-            self.config = get_tenant_config(matched_tenant)
-            session['tenant_id'] = matched_tenant
-            return self._get_db_name(matched_tenant)
+            matched_tenant = _resolve_registered_tenant_id(tenant_from_header)
+            if matched_tenant:
+                self.tenant_id = matched_tenant
+                self.config = get_tenant_config(matched_tenant)
+                session['tenant_id'] = matched_tenant
+                return self._get_db_name(matched_tenant)
 
         # Priority 2: Port/host based tenant mapping
         host_candidates = _request_host_candidates()
@@ -544,11 +553,11 @@ class TenantContext:
                 if len(parts) >= 2:
                     potential_subdomain = parts[0]
                     if potential_subdomain not in ('www', 'api', 'admin', 'app', 'mail'):
-                        matched_tenant = _find_registered_tenant_id(potential_subdomain)
+                        matched_tenant = _resolve_registered_tenant_id(potential_subdomain)
                         if not matched_tenant and potential_subdomain.startswith('school'):
-                            matched_tenant = _find_registered_tenant_id('schule' + potential_subdomain[len('school'):])
+                            matched_tenant = _resolve_registered_tenant_id('schule' + potential_subdomain[len('school'):])
                         elif not matched_tenant and potential_subdomain.startswith('schule'):
-                            matched_tenant = _find_registered_tenant_id('school' + potential_subdomain[len('schule'):])
+                            matched_tenant = _resolve_registered_tenant_id('school' + potential_subdomain[len('schule'):])
                         if matched_tenant:
                             self.subdomain = potential_subdomain
                             self.tenant_id = matched_tenant
@@ -565,12 +574,21 @@ class TenantContext:
         # Priority 4: sticky tenant from the authenticated session
         session_tenant = session.get('tenant_id', '').strip() if session.get('tenant_id') else ''
         if session_tenant:
-            self.tenant_id = session_tenant
-            self.config = get_tenant_config(session_tenant)
+            matched_tenant = _resolve_registered_tenant_id(session_tenant)
+            if matched_tenant:
+                self.tenant_id = matched_tenant
+                self.config = get_tenant_config(matched_tenant)
+                session['tenant_id'] = matched_tenant
+                logger.info(
+                    f"Tenant resolution by session: host={primary_host} tenant={matched_tenant} config={self.config}"
+                )
+                return self._get_db_name(matched_tenant)
+            session.pop('tenant_id', None)
             logger.info(
-                f"Tenant resolution by session: host={primary_host} tenant={session_tenant} config={self.config}"
+                "Discarded stale tenant session reference: host=%s tenant=%s",
+                primary_host,
+                session_tenant,
             )
-            return self._get_db_name(session_tenant)
 
         # Fallback to default tenant if no tenant identifier found.
         # If no explicit 'default' tenant config exists, use configured MongoDB DB.