Tick arithmetic saturates, seconds-to-tick conversion clamps to Tick::MIN..=Tick::MAX (NaN is
zero), zero rates/timebases no longer divide by zero, and timecode / feet+frames parsing and
formatting use checked or saturating math. `layer.timing {"delta": -1e308}` over the control
channel overflowed FrameRate::snap_nearest (found by fuzzing every command), and a timecode
field holding 99999999999999:00:00:00 overflowed parse_timecode. Denies the panic lints.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- Current time shown as AE does: 0:00:02:15 (hours unpadded; time::format_timecode_ae),
frame count zero-padded to 5 digits (00075 (29.97 fps)).
- Time ruler labels in seconds:frames (00:15f, 01:00f) with frame-based adaptive spacing.
- time.set snaps seconds to the nearest frame (2.5 s at 29.97 -> frame 75).
- Mode / Track Matte columns hidden until Toggle Switches/Modes (F4), as in AE's default.
- Timeline outline pane sized to its columns and clipped so Parent & Link never draws
over the time graph in narrow timelines.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
