ui: bump asciinema-player from 3.15.1 to 3.16.0 in /ui

[dependabot]

Bumps asciinema-player from 3.15.1 to 3.16.0.

Release notes

Sourced from asciinema-player's releases.

3.16.0

This is a significant release, with a new keystroke overlay and major improvements to recording playback.

Notable changes:

• New optional keystroke overlay, toggled with the k key
• New cursorMode option: "blinking", "steady" or "hidden"
• TypeScript definitions included in the npm package
• More reliable loading, playback, seeking, stepping and looping
• Recording load failures are now emitted via the error event
• Audio loading failures no longer prevent recording playback
• Improved rendering of Powerline and box-drawing symbols
• Improved accessibility of control bar buttons
• Standalone bundle is now compatible with LibreJS

Keystroke overlay

The new keystrokeOverlay option displays keys pressed during a recording:

AsciinemaPlayer.create("/demo.cast", document.getElementById("demo"), {
  keystrokeOverlay: true
});

Recent keystrokes are shown in the lower-right corner. Consecutive text input is grouped, while repeated special keys use a counter, such as Ret × 3.

The overlay is disabled by default and can be toggled during playback with the k key. It requires a recording containing input events (asciinema rec --capture-input ...).

Demo:

Cursor mode

The new cursorMode option controls cursor visibility:

AsciinemaPlayer.create("/demo.cast", document.getElementById("demo"), {
  cursorMode: "steady"
});

Supported modes are "blinking" (the default), "steady" and "hidden".

Playback improvements

The recording playback engine has been significantly reworked. This fixes several edge cases involving reverse stepping, marker pauses, looping, seeking, posters and audio playback.

Missing or invalid audio now falls back to terminal-only playback. Fatal recording load errors are emitted through the new error event.

... (truncated)

Commits

• 33285c7 Remove redundant control keystroke browser test
• 9dc185c Align keystroke overlay tests with default
• 7f89d6c Remove keystroke sequence table
• 1d649be Clean up backspace keystroke mappings
• af7a605 Add keystroke overlay to the features list in the README
• ca43784 Disable keystroke overlay by default
• fe2a7b8 Whitespace
• 006c4d0 Clean up keystroke overlay props
• fa73a66 Simplify keystroke CSI parsing
• b6a3dd1 Extend keystroke overlay visibility
• Additional commits viewable in compare view

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