Two regressions made the cursor stop communicating game state:
- The canvas had a hardcoded `cursor: grab`, overriding the document-level process-state
cursor everywhere over the 3D scene (always a hand). Removed it so the canvas inherits the
state cursor; grab is now shown only transiently while right-drag-rotating the camera.
- normalizeProcessState pinned ready/waiting-generating to the playing (feather) cursor
whenever playbackCoordinator.isPlaying was set, which lingered at choice prompts — so an
open choice showed the feather instead of the input cursor. Now, when an input prompt is
open AND no sentence is actively playing (timeline's webglBookPlaybackActive), the playback
overlay is stripped (playing-ready->ready, playing-generating->waiting-generating) and the
input/server cursor shows. Opening an input mode also refreshes the cursor immediately.
Verified live over the canvas: feather while a sentence plays, input arrow at a choice/idle,
and they switch correctly with playback state (no stuck feather, no constant grab).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Georg