refactor(mobile): share settings choice row defaults

[juliusmarminge]

Retained in the V2 UI stack. This migration includes the V2 follow-up settings screen, which is absent from main.

Keyboard, Follow-ups, and Project grouping repeated the Server Controls choice row but omitted its Android text sizing and pressed feedback. Each screen maintained its own spacing, selection checkmark, and radio accessibility markup.

Extract SettingsChoiceRow from Server Controls and use it on all four screens. The component owns those defaults, including android:text-base; screens retain their options, selection state, disabled conditions, and persistence callbacks. Deliberately different thread-settings radio controls remain separate.

Validation: mobile typecheck, changed-file lint/format checks, and 11 existing settings/preference tests passed. React Doctor scanned the five changed files and reported only existing warnings in unchanged safe-area padding and Server Controls code.

Applies to iOS and Android settings. No preference schema, server, contracts, or migration changes; existing V2 preview state remains compatible. Simulator/browser verification and before/after captures were explicitly excluded from this code-only pass. Kept as a draft pending visual review.

Model: GPT-6. Harness: Codex.

[github-actions]

Thread transfer impact

⚠️ The latest CI run did not produce a thread transfer result for 04b3e66.

This comment will update automatically after the next completed run.

[macroscopeapp]

Approvability

Verdict: Approved at 1cc6e6c

Macroscope's review found this PR approvable — This is a localized extraction of an existing settings choice row, preserving selection, persistence, accessibility, and disabled-state behavior. The only runtime differences are bounded visual consistency improvements across the mobile settings screens.

No code changes detected at 04b3e66. Prior analysis still applies.

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