Add system settings, audit logging, user management, and dark mode fixes

System Settings:
- Add SystemSettings.vue with Zabbix integration, SMTP/email config, SAML SSO settings
- Add Setting model with key-value storage and typed values
- Add settings API with caching

Audit Logging:
- Add AuditLog model tracking user, IP, action, entity changes
- Add comprehensive audit logging to all CRUD operations:
  - Machines, Computers, Equipment, Network devices, VLANs, Subnets
  - Printers, USB devices (including checkout/checkin)
  - Applications, Settings, Users/Roles
- Track old/new values for all field changes
- Mask sensitive values (passwords, tokens) in logs

User Management:
- Add UsersList.vue with full user CRUD
- Add Role management with granular permissions
- Add 41 predefined permissions across 10 categories
- Add users API with roles and permissions endpoints

Reports:
- Add TonerReport.vue for printer supply monitoring

Dark Mode Fixes:
- Fix map position section in PCForm, PrinterForm
- Fix alert-warning in KnowledgeBaseDetail
- All components now use CSS variables for theming

CLI Commands:
- Add flask seed permissions
- Add flask seed settings

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/printers/api/routes.py

@@ -8,6 +8,7 @@ from shopdb.utils.responses import success_response, error_response, paginated_r
 from shopdb.utils.pagination import get_pagination_params, paginate_query
 from shopdb.core.models.machine import Machine, MachineType
 from shopdb.core.models.communication import Communication, CommunicationType
+from shopdb.core.models import AuditLog
 
 from ..models import PrinterData
 from ..services import ZabbixService
@@ -132,10 +133,21 @@ def update_printer_data(machine_id: int):
         pd = PrinterData(machineid=machine_id)
         db.session.add(pd)
 
+    # Track changes for audit log
+    changes = {}
     for key in ['windowsname', 'sharename', 'iscsf', 'installpath', 'pin']:
         if key in data:
+            old_val = getattr(pd, key, None)
+            new_val = data[key]
+            if old_val != new_val:
+                changes[key] = {'old': old_val, 'new': new_val}
             setattr(pd, key, data[key])
 
+    # Audit log if there were changes
+    if changes:
+        AuditLog.log('updated', 'Printer', entityid=machine_id,
+                     entityname=machine.machinenumber or machine.hostname, changes=changes)
+
     db.session.commit()
 
     return success_response({
@@ -176,14 +188,28 @@ def update_printer_communication(machine_id: int):
         comm = Communication(machineid=machine_id, comtypeid=ip_comtype.comtypeid)
         db.session.add(comm)
 
+    # Track changes for audit log
+    changes = {}
+
     # Update fields
     if 'ipaddress' in data:
+        if comm.ipaddress != data['ipaddress']:
+            changes['ipaddress'] = {'old': comm.ipaddress, 'new': data['ipaddress']}
         comm.ipaddress = data['ipaddress']
     if 'isprimary' in data:
+        if comm.isprimary != data['isprimary']:
+            changes['isprimary'] = {'old': comm.isprimary, 'new': data['isprimary']}
         comm.isprimary = data['isprimary']
     if 'macaddress' in data:
+        if comm.macaddress != data['macaddress']:
+            changes['macaddress'] = {'old': comm.macaddress, 'new': data['macaddress']}
         comm.macaddress = data['macaddress']
 
+    # Audit log if there were changes
+    if changes:
+        AuditLog.log('updated', 'Printer', entityid=machine_id,
+                     entityname=machine.machinenumber or machine.hostname, changes=changes)
+
     db.session.commit()
 
     return success_response({
@@ -211,8 +237,12 @@ def get_printer_supplies(machine_id: int):
         return error_response(ErrorCodes.VALIDATION_ERROR, 'Printer has no IP address')
 
     service = ZabbixService()
-    if not service.isconfigured:
-        return error_response(ErrorCodes.SERVICE_UNAVAILABLE, 'Zabbix not configured')
+    if not service.isconfigured or not service.isreachable:
+        # Return empty supplies if Zabbix not available (fail gracefully)
+        return success_response({
+            'ipaddress': primary_comm.ipaddress,
+            'supplies': []
+        })
 
     supplies = service.getsuppliesbyip(primary_comm.ipaddress)