Skip dynamic code: fields in multi-field no-label accessibility check

[Copilot]

A field entry of the form - code: | (dynamic code field) was incorrectly triggering the no-label-on-multi-field-screen accessibility error because it has no static label by design — its fields are generated at runtime.

Changes

• accessibility.py — _check_multifield_no_label_usage now skips any field entry that contains a "code" key, since these entries expand dynamically and cannot have a static label:

  for field in fields:
      if "code" in field:
          continue

• tests/test_yaml_structure.py — adds a regression test covering a multi-field screen that mixes a - code: entry with normal labeled fields, asserting no accessibility error is raised.

Example that previously errored but should be valid:

fields:
  - code: |
      dynamic_fields()
  - What is the court county?: court_county
    choices:
      - Contra Costa
      - Alameda