feat(a11y): meta.source + opt-in --native platform accessibility tree - #183

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/attest-build-provenance/predicate@1176ef556905f349f669722abf30bce1a6e16e01, actions/attest@ce27ba3b4a9a139d9a20a4a07d69fabb52f1e5bc, actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/