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>

frontend/src/views/reports/ReportsIndex.vue

@@ -4,6 +4,11 @@
   </div>
 
   <div class="reports-grid">
+    <div class="report-card card" @click="router.push('/reports/toner')">
+      <h3>Toner Report</h3>
+      <p>View printers with low or critical toner/supply levels</p>
+      <span class="badge">Printers</span>
+    </div>
     <div v-for="report in reports" :key="report.id" class="report-card card" @click="runReport(report)">
       <h3>{{ report.name }}</h3>
       <p>{{ report.description }}</p>