CI 'Fail on golden drift' (rust-check.yml) was red because oxfmt
inlined the 4-element padding arrays in the committed goldens, while
the TS oracle's `JSON.stringify(value, null, 2)` emits them multi-line.
Every `bun run format` would re-introduce the drift.
Fix:
- .prettierignore: ignore crates/op-design-lint/tests/fixtures/golden/
so oxfmt leaves them at the TS-oracle byte-exact format.
- regenerate the two affected goldens via the oracle
(edge-section-padding.json, stacked-horizontal-padding.json) so they
match what the CI drift guard expects.
`bun run tools/dump-diagnostics-golden.ts` + `git diff` now clean.
`cargo test -p op-design-lint` 149/149 green. fmt-check clean.
This was the only red workflow on the v0.8.0-new push; CI should be
fully green after this lands.