groove: adopt the Ranked-Ownership Cleave spec (B2 cleave) — standard… (#552)

…s#386

Canonical normative spec for groove teardown: the discipline by which a
groove connection closes cleanly and provably leaves zero residue (⊥).
Covers the B2 (live-governance / lifecycle-residue) layer only.

- groove-protocol/spec/GROOVE-RANKED-OWNERSHIP-CLEAVE-SPEC.adoc —
v0.2.0-draft.1: two well-founded measures (occupancy = renewable lease;
discharge = residue→⊥), cycle-freedom from well-foundedness of `owns`,
edge classification (owns=linear / borrow=affine /
observe|peer=unrestricted), partial-order fidelity
(children-before-parent; Dershowitz–Manna multiset), ordinals only
static-at-connect (ε₀+ forbidden), joint completion +
survivor-owns-the-wipe rupture policy, and 13 normative invariants
RC-1…RC-13 each with a falsifier.
- groove-protocol/README.adoc — cleave-surface layering (A/B1/B2/C1/C2)
+ index.
- Pointer from the superseded groove-browser-harness template.

Provenance corrections folded in (verified against the gossamer tree):
host proof is ResourceCleanup.idr (not GrooveTermination.idr); `owns` is
linear not affine; the graph invariants are VACUOUSLY satisfied today
(flat groove array, no owns graph) — a green checker is not yet a real
guarantee. Addresses gossamer#82 item 6.

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## Summary

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Closes #

## Type of change

- [ ] 🐛 Bug fix (non-breaking change that fixes an issue)
- [ ] ✨ New feature (non-breaking change that adds functionality)
- [ ] 💥 Breaking change (would change existing behaviour)
- [ ] 🕳️ Soundness fix (fixes a checker/proof false-negative)
- [ ] 📖 Documentation
- [ ] 🧹 Refactor / tech debt (behaviour-preserving)
- [ ] ⚡ Performance
- [ ] 🔧 Build / CI / tooling

## How has this been verified?

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## Checklist

- [ ] My commits are **signed** (`git commit -S`).
- [ ] I ran the project's own checks/tests locally and they pass.
- [ ] New files carry the correct `SPDX-License-Identifier` (code/config
`MPL-2.0`,
      prose `CC-BY-SA-4.0`); I did not relicense existing files.
- [ ] Docs are updated, and no public claim now overstates what the code
does.
- [ ] I have not introduced a soundness hole (or I have flagged where I
might have).

## Notes for reviewers

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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: hyperpolymath