Add printer installer endpoint (data + floor-map positions)

Shopfloor 2.0 PCs can't run unsigned .bat printer maps, so the signed printer
installer EXE pulls printer data + floor-map positions from the API and renders
the picker itself. Adds the endpoint the EXE consumes.

GET /api/printers/install-list - flat, unpaginated list of NETWORK printers
(USB-only excluded), each with: printerid, name, machinenumber, windowsname,
sharename, hostname, ipaddress, vendorname, modelnumber, installpath, iscsf,
locationname, mapx, mapy. Replaces the classic apiprinters.asp contract and
adds the map position (mapx/mapy) the EXE needs.

Tests: network printer appears with map position + installer fields; USB-only
printer excluded. 188 tests pass, naming green.

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

plugins/printers/api/asset_routes.py

@@ -188,6 +188,53 @@ def list_printers():
     return paginated_response(data, page, per_page, total)
 
 
+@printers_asset_bp.route('/install-list', methods=['GET'])
+@jwt_required(optional=True)
+def printer_install_list():
+    """Flat, unpaginated list of network printers for the printer installer.
+
+    Shopfloor 2.0 PCs cannot run unsigned .bat maps, so the signed installer EXE
+    pulls printer data + floor-map positions from here and renders the picker.
+    Replaces the classic apiprinters.asp contract, adding mapx/mapy. Network
+    printers only (USB-only printers are excluded).
+    """
+    rows = []
+    query = db.session.query(Printer).join(Asset).filter(Asset.isactive == True)
+    for printer in query.all():
+        asset = printer.asset
+        if not asset:
+            continue
+        primary = Communication.query.filter_by(
+            assetid=asset.assetid, isprimary=True).first() \
+            or Communication.query.filter_by(assetid=asset.assetid).first()
+        ipaddress = primary.ipaddress if primary else None
+
+        # Network printers only: must have a hostname or a non-USB IP.
+        is_network = bool(printer.hostname) or (ipaddress and ipaddress != 'USB')
+        if not is_network:
+            continue
+
+        data = printer.to_dict()
+        rows.append({
+            'printerid': printer.printerid,
+            'name': asset.name or asset.assetnumber,
+            'machinenumber': asset.assetnumber,
+            'windowsname': printer.windowsname,
+            'sharename': printer.sharename,
+            'hostname': printer.hostname,
+            'ipaddress': ipaddress,
+            'vendorname': data.get('vendorname'),
+            'modelnumber': data.get('modelname'),
+            'installpath': printer.installpath,
+            'iscsf': printer.iscsf,
+            'locationname': asset.location.locationname if asset.location else None,
+            'mapx': asset.mapx,
+            'mapy': asset.mapy,
+        })
+
+    return success_response(rows)
+
+
 @printers_asset_bp.route('/<int:printer_id>', methods=['GET'])
 @jwt_required(optional=True)
 def get_printer(printer_id: int):