test: close tvOS platform command-coverage gaps from #1426

Part of #1426.

The tvOS platform manifest records these commands as known gaps because current HEAD has no command-specific tvOS evidence that meets the manifest contract:

- artifacts
- capabilities
- doctor
- apps
- boot
- shutdown
- appstate
- perf
- logs
- events
- network
- replay
- test
- clipboard
- trigger-app-event
- prepare
- batch
- snapshot
- diff
- wait
- alert
- settings
- react-native
- record
- trace
- find
- click
- fill
- longpress
- press
- type
- get
- is
- swipe
- focus
- screenshot
- viewport
- app-switcher

Follow-up work should add or identify executable tvOS command evidence before changing these rows. Do not add a tvOS CI or live scenario as part of this tracking issue without a separate platform-evidence decision.

Locate the tvOS platform manifest and the command-specific evidence used by its coverage contract; the issue does not name a file or test. Review the listed commands and existing platform evidence first. Done means each applicable gap has executable tvOS command evidence, or is identified with a clear basis before its manifest row changes.

Written by the indexing model from the issue text.