Phase 7: serve the vet sample from the template tools and docs

- build.py: _TEMPLATE_COMPONENTS rewritten around the vet sample (53 kinds —
  per-resource slices, jobs, worked appointment_reminder family, tests);
  seed tokens dropped from the manifest ('sample: vet' instead)
- registry.py: get_app_component(kind) no longer renames item/example seeds;
  prompts and tool docs updated to 'copy a slice and adapt'
- templates/README.md, 01_build_recipe, 40_ui_admin, wiki/03 updated off the
  old seed scheme; repo inventory/config now exclude vet (docs move under
  standards; react/vet itself is deleted in a later phase)
- regenerated MCP bundle, vendored templates, and site output

standards/mcp/templates/app/tests/integration/test_item_routes.py

@@ -1,32 +0,0 @@
-import importlib
-
-from openapi_first.app import OpenAPIFirstApp
-
-import interfaces.openapi as routes_module
-
-
-def test_openapi_app_builds():
-    """The spec-first app must build and plant each route handler."""
-    module = importlib.import_module(routes_module.__name__)
-    for operation in (
-        "health",
-        "list_items",
-        "create_item",
-        "get_item",
-        "update_item",
-        "delete_item",
-        "list_jobs",
-        "create_job",
-        "get_job",
-        "update_job",
-        "delete_job",
-    ):
-        assert hasattr(module, operation)
-
-    app = OpenAPIFirstApp(
-        openapi_path="openapi.yaml",
-        routes_module=module,
-        title="App Template API",
-        version="0.1.0",
-    )
-    assert app is not None