feat: headless PNG render, mLnL annotations, and per-frame sched offset

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- Headless render: `--render OUT.png INPUT.wav` draws the spectrogram
  (full window, or `--pane` for the spectrogram pane only) to a PNG
  with no visible window. Options: `--annotations`/`--no-annotations`,
  `--annotation-opacity`, `--width`/`--height`.
- mLnL annotations: parse the optional `mLnL` RIFF chunk (schema v2)
  and render tx_frame/assertion/control overlays, a timeline lane, and
  a waveform-scope echo, with hover tooltips on the spectrogram,
  timeline, and scope.
- sched_offset_ms: parse the per-frame intent->air latency and surface
  it in the hover tooltips (boxes stay air-anchored upstream).
- Supporting: build wiring (rspektrum.make), shared types/headers,
  web-build and capture-script tweaks, and removal of the old
  synchrosqueezing LaTeX doc.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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Tyler

2026-05-29 12:19:37 -07:00

parent cef7619833

commit ac262505c1

17 changed files with 2263 additions and 257 deletions

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mlnl_samples.wav

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