The changelog list is keyboard-first: j/k move between rows, enter opens one #10647

Every changelog row is now a keyboard row: j/k move between them and enter opens one. bun test test/keys-changelog.test.ts (2 tests), bun x tsc --noEmit, bun scripts/design-lint.ts and bun scripts/gate.ts all pass.

What changed

• landingRow in src/web/pages/changelog.ts passes nav: true. That covers both the live rows and the "On its way" rows, since they share the same builder.
• The row component only adds data-nav tabindex="-1". No new class and no new script, and the markup is otherwise the same for readers without JavaScript.
• The new test/keys-changelog.test.ts renders shippedRegion with two live rows and one on its way, and expects three data-nav rows. It also checks the empty changelog draws none. I confirmed the first test depends on the change: without nav: true there are no data-nav rows.

What I left out

• The test calls shippedRegion directly instead of booting an app like keys-waves.test.ts does. The landings are plain data, so this is faster and needs no git repository. I did not run the full page route.
• scripts/gate.ts doesn't list keys-waves.test.ts or any other keys test, so I didn't add this one.
• docs/features/hotkey-hints.md is unchanged because the hint text is the same.

How to try it Open /changelog and press j and k to move between rows, then enter to open a pull.

The pre-push hook rejected my first push because no commit had a Try: line, so I amended the commit message to add one.

Closes #10431

Every changelog row is now a keyboard row: j/k move between them and enter opens one. bun test test/keys-changelog.test.ts (2 tests), bun x tsc --noEmit, bun scripts/design-lint.ts and bun scripts/gate.ts all pass.

What changed

• landingRow in src/web/pages/changelog.ts passes nav: true. That covers both the live rows and the "On its way" rows, since they share the same builder.
• The row component only adds data-nav tabindex="-1". No new class and no new script, and the markup is otherwise the same for readers without JavaScript.
• The new test/keys-changelog.test.ts renders shippedRegion with two live rows and one on its way, and expects three data-nav rows. It also checks the empty changelog draws none. I confirmed the first test depends on the change: without nav: true there are no data-nav rows.

What I left out

• The test calls shippedRegion directly instead of booting an app like keys-waves.test.ts does. The landings are plain data, so this is faster and needs no git repository. I did not run the full page route.
• scripts/gate.ts doesn't list keys-waves.test.ts or any other keys test, so I didn't add this one.
• docs/features/hotkey-hints.md is unchanged because the hint text is the same.

How to try it Open /changelog and press j and k to move between rows, then enter to open a pull.

The pre-push hook rejected my first push because no commit had a Try: line, so I amended the commit message to add one.