printedparts stage 1: scaffold, no AssetType, manifest per spec

flask plugin new output, minus the scaffold's AssetType seeding:
printed parts are quantity-based consumables, not ADR-001 assets.
on_install seeds the three plugin settings instead. Manifest pins
core >=0.11.0, depends on employees (badge name resolution), ships
disabled until a site opts in.

plugins/printedparts/api/routes.py

@@ -0,0 +1,45 @@
+"""Printedparts plugin API routes."""
+
+from flask import Blueprint, request
+from flask_jwt_extended import jwt_required
+
+from shopdb.api import (
+    success_response,
+    error_response,
+    paginated_response,
+    ErrorCodes,
+    get_pagination_params,
+    paginate_query,
+)
+
+from ..models import Printedparts
+
+
+printedparts_bp = Blueprint('printedparts', __name__)
+
+
+@printedparts_bp.route('', methods=['GET'])
+@jwt_required(optional=True)
+def list_printedparts():
+    """List printedparts assets, paginated."""
+    page, per_page = get_pagination_params(request)
+
+    query = Printedparts.query
+    items, total = paginate_query(query, page, per_page)
+    data = [item.to_dict() for item in items]
+
+    return paginated_response(data, page, per_page, total)
+
+
+@printedparts_bp.route('/<int:assetid>', methods=['GET'])
+@jwt_required(optional=True)
+def get_printedparts(assetid: int):
+    """Get a single printedparts by assetid."""
+    item = Printedparts.query.get(assetid)
+    if not item:
+        return error_response(
+            ErrorCodes.NOT_FOUND,
+            f'Printedparts with assetid {assetid} not found',
+            http_code=404,
+        )
+    return success_response(item.to_dict())