Closes#299. The "does the platform already do this?" rung is especially
rich on Apple platforms, but the doc had no Swift coverage. Adds a
Swift/SwiftUI section in the existing two-table format: SwiftUI controls
and the Swift/framework layer, with library carve-outs kept inline to
match the `ms` / `requests` style already in the doc.
Claude-Session: https://claude.ai/code/session_01MtGgxEbiXPQjqMyXWbnixn
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
