Asset-side printer save, status CRUD, real printer types, network fix

- Printers save through the asset blueprint (PUT /printers) instead of the
  legacy machines API; restrict supply-model picker to printer models.
- Asset statuses get full CRUD (PUT/DELETE with in-use guard); canonical set.
- Printer types reseeded to a real classification set + list filter.
- Equipment accepts gauge/maintenance references.
- Fix network list emitting network_device instead of networkdevice (View 404).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

shopdb/core/api/assets.py

@@ -153,6 +153,56 @@ def create_asset_status():
     return success_response(s.to_dict(), message='Asset status created', http_code=201)
 
 
+@assets_bp.route('/statuses/<int:status_id>', methods=['PUT'])
+@jwt_required()
+def update_asset_status(status_id: int):
+    """Update an asset status."""
+    s = AssetStatus.query.get(status_id)
+    if not s:
+        return error_response(ErrorCodes.NOT_FOUND, 'Asset status not found',
+                              http_code=404)
+
+    data = request.get_json() or {}
+
+    # Conflict check on rename
+    if 'status' in data and data['status'] != s.status:
+        if AssetStatus.query.filter_by(status=data['status']).first():
+            return error_response(
+                ErrorCodes.CONFLICT,
+                f"Asset status '{data['status']}' already exists",
+                http_code=409
+            )
+
+    for key in ('status', 'description', 'color', 'isactive'):
+        if key in data:
+            setattr(s, key, data[key])
+
+    db.session.commit()
+    return success_response(s.to_dict(), message='Asset status updated')
+
+
+@assets_bp.route('/statuses/<int:status_id>', methods=['DELETE'])
+@jwt_required()
+def delete_asset_status(status_id: int):
+    """Delete an asset status. Refused if any asset still uses it."""
+    s = AssetStatus.query.get(status_id)
+    if not s:
+        return error_response(ErrorCodes.NOT_FOUND, 'Asset status not found',
+                              http_code=404)
+
+    inuse = Asset.query.filter_by(statusid=status_id).count()
+    if inuse:
+        return error_response(
+            ErrorCodes.CONFLICT,
+            f"Cannot delete: {inuse} asset(s) still use this status",
+            http_code=409
+        )
+
+    db.session.delete(s)
+    db.session.commit()
+    return success_response(message='Asset status deleted')
+
+
 # =============================================================================
 # Assets
 # =============================================================================