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>

plugins/computers/plugin.py

@@ -11,7 +11,7 @@ import click
 from shopdb.plugins.base import BasePlugin, PluginMeta
 from shopdb.api import db, AssetType
 
-from .models import Computer, ComputerType, ComputerInstalledApp
+from .models import Computer, ComputerType, ComputerInstalledApp, AccessProtocol, ComputerAccess
 from .api import computers_bp
 
 logger = logging.getLogger(__name__)
@@ -58,7 +58,7 @@ class ComputersPlugin(BasePlugin):
 
     def get_models(self) -> List[Type]:
         """Return list of SQLAlchemy model classes."""
-        return [Computer, ComputerType, ComputerInstalledApp]
+        return [Computer, ComputerType, ComputerInstalledApp, AccessProtocol, ComputerAccess]
 
     def init_app(self, app: Flask, db_instance) -> None:
         """Initialize plugin with Flask app."""
@@ -329,10 +329,11 @@ class ComputersPlugin(BasePlugin):
 
                 click.echo(f"Total active computers: {total}")
 
-                # Shopfloor count
+                # Shopfloor count (by the Shopfloor computer type)
+                sf = ComputerType.query.filter_by(computertype='Shopfloor').first()
                 shopfloor = db.session.query(Computer).join(Asset).filter(
                     Asset.isactive == True,
-                    Computer.isshopfloor == True
+                    Computer.computertypeid == (sf.computertypeid if sf else -1)
                 ).count()
 
                 click.echo(f"  Shopfloor PCs: {shopfloor}")