Consolidate docs/slp-workshop/SPEC.md into docs/specs/slp-workshop-
firmware.md so the project has a single SLP-Workshop spec. The unified
spec is now two parts:
- Part I (§1-8, shipped/stable): the mode + Jolt & OU-explore gestures.
- Part II (§9-13, planned): the output-mode evolution — Continuous/Rhythm
stream model, gate sequences, CV/MIDI output config, Manifold UX, and
the locked operator decisions (2026-06-28).
Frontmatter bumped stable -> evolving (the doc now spans shipped +
planned). Donor docs/slp-workshop/SPEC.md removed; README.md row and
MAP.md ## Specs note updated. No code change.
2e75194fbb