Add realtime gestures and chrome button controls

[DjDeveloperr]

Summary

• add realtime bottom-edge, multi-touch, and chrome button input paths through the native session/control APIs
• render physical chrome buttons as interactive sprites with hover/press positioning and exact HID usage dispatch where available
• preserve full-resolution local streaming behavior while reducing unnecessary encoder buffer copies

Verification

• cargo fmt --manifest-path server/Cargo.toml --check
• ./node_modules/.bin/tsc --noEmit
• cargo test --manifest-path server/Cargo.toml
• ./scripts/build-cli.sh
• ./node_modules/.bin/vite build