Test mobile editing

Run shell commands from the checkout root unless a command explicitly changes directory. Abbreviated source references such as tests/native/journey.tsx are relative to apps/mobile/modules/remote-text-input; paths beginning with apps/ are relative to the checkout root. Use the reserved VM/device workflow in docs/testing.md; do not run GUI journeys on the host.

Run individual JS checks and the mobile typecheck:

pnpm exec vitest run apps/mobile/modules/remote-text-input/tests/page.interaction.test.tsx
pnpm exec vitest run apps/mobile/modules/remote-text-input/tests/native-view.interaction.test.tsx
pnpm exec vitest run apps/mobile/src/computers/phone-display.interaction.test.tsx
pnpm exec vitest run apps/mobile/src/screens/workspace-browser.interaction.test.tsx
pnpm --filter @opensteer/mobile typecheck