Add custom fields + warranty plugin, rework settings into two-pane shell

Feature work from the 2026-07 session:

Settings IA
- Replace the flat 27-card settings hub with a persistent two-pane shell
  (SettingsLayout.vue): grouped, searchable left rail + content pane.
- Nest all settings/* routes under the shell via router post-processing;
  shared nav catalog in settingsNav.js. Group by asset class (PCs, Printers,
  Equipment, Network) so per-type settings stop scattering.

Custom fields (core)
- customfields + customfieldvalues tables (migration 7d14), CRUD API at
  /api/customfields, per-asset value get/save.
- Settings management page + reusable CustomFieldsSection (detail) and
  CustomFieldsInputs (form) wired into all four asset types.

Warranty (new plugin)
- plugins/warranty: warranties + warrantyassets (migration 7d15), derived
  coverage status, provider abstraction (manual now; Dell/Lenovo/HP stubs).
- API CRUD + per-asset panel + report buckets; WarrantyPanel on all four
  detail pages; Warranties management page; Warranty report + Reports card.
- Seed warranty.* permissions.

Printer drivers
- printerdrivers table (migration 7d13) linked to printer models; drivers now
  surface on the matching printer's detail page.

Other
- PCDetail rebalanced (Network + Status + Warranty + custom fields on the right).
- Rename PCs list "Features" column to "Remote Access"; fix badge hover underline.
- Drop equipment islocationonly field.
- Centralize asset-type label/route maps into utils/assetTypes.js.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/router/routes/computers.js

@@ -36,5 +36,11 @@ export default [
     name: 'operatingsystems',
     component: () => import('../../views/settings/OperatingSystemsList.vue'),
     meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/accessprotocols',
+    name: 'access-protocols',
+    component: () => import('../../views/settings/AccessProtocolsList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
   }
 ]

frontend/src/router/routes/core.js

@@ -92,6 +92,60 @@ export default [
     component: () => import('../../views/settings/DashboardDefaultsList.vue'),
     meta: { requiresAuth: true, requiresAdmin: true }
   },
+  {
+    path: 'settings/site',
+    name: 'site-settings',
+    component: () => import('../../views/settings/SiteSettings.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/slides',
+    name: 'slide-manager',
+    component: () => import('../../views/settings/SlideManager.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/equipmenttypes',
+    name: 'equipment-types',
+    component: () => import('../../views/settings/EquipmentTypesList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/networktypes',
+    name: 'network-types',
+    component: () => import('../../views/settings/NetworkTypesList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/printertypes',
+    name: 'printer-types',
+    component: () => import('../../views/settings/PrinterTypesList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/relationshiptypes',
+    name: 'relationship-types',
+    component: () => import('../../views/settings/RelationshipTypesList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/locationtypes',
+    name: 'location-types',
+    component: () => import('../../views/settings/LocationTypesList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/assettypes',
+    name: 'asset-types',
+    component: () => import('../../views/settings/AssetTypesList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
+  {
+    path: 'settings/customfields',
+    name: 'custom-fields',
+    component: () => import('../../views/settings/CustomFieldsList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
+  },
   {
     path: 'settings/system',
     name: 'system-settings',

frontend/src/router/routes/notifications.js

@@ -13,6 +13,12 @@ export default [
     component: () => import('../../views/notifications/NotificationForm.vue'),
     meta: { requiresAuth: true }
   },
+  {
+    path: 'settings/notificationtypes',
+    name: 'notification-types',
+    component: () => import('../../views/notifications/NotificationTypesList.vue'),
+    meta: { requiresAuth: true }
+  },
   {
     path: 'notifications/:id',
     name: 'notification-detail',

frontend/src/router/routes/printers.js

@@ -30,5 +30,11 @@ export default [
     name: 'model-supplies',
     component: () => import('../../views/settings/ModelSuppliesList.vue'),
     meta: { requiresAuth: true }
+  },
+  {
+    path: 'settings/printerdrivers',
+    name: 'printer-drivers',
+    component: () => import('../../views/settings/PrinterDriversList.vue'),
+    meta: { requiresAuth: true, requiresAdmin: true }
   }
 ]

frontend/src/router/routes/warranty.js

@@ -0,0 +1,16 @@
+/**
+ * Warranty plugin routes
+ */
+export default [
+  {
+    path: 'warranties',
+    name: 'warranties',
+    component: () => import('../../views/warranty/WarrantiesList.vue'),
+    meta: { requiresAuth: true }
+  },
+  {
+    path: 'reports/warranty',
+    name: 'warranty-report',
+    component: () => import('../../views/reports/WarrantyReport.vue')
+  }
+]