WarpTickPatchV1 delta patches + commit hash v2

[flyingrobots]

Delta Tick Patches (WarpTickPatchV1) + Commit Hash v2 (Paper III boundary semantics)

Goal

• Implement Paper III-style boundary artefacts: a per-tick delta patch (not recipe) that is replayable without search.
• Move commit hashing to v2 so commit_id commits ONLY to the replayable delta (patch_digest), not to planner/scheduler narration.

Decisions (locked)

1. Patch stores unversioned slots only.
   • WarpTickPatchV1 includes in_slots/out_slots as sets of SlotId.
   • ValueVersionId := (slot_id, tick_index) is derived by interpretation along a worldline (position in payload P), not stored.
2. Commit hash v2 commits to patch_digest ONLY.
   • v2 commit header commits to parents + state_root + patch_digest (+ policy_id/version tags).
   • plan_digest / decision_digest / rewrites_digest / receipts / applied_rewrites are diagnostics only.

Implementation outline

• Add WarpTickPatchV1 + WarpOp minimal set to warp-core (delta ops + canonical encoding + patch_digest).
• Generate delta ops by deterministic diff of GraphStore pre/post commit (v0 correctness first).
• Conservative in/out derivation (over-approx OK; under-approx forbidden).
• Update Snapshot to carry patch_digest and compute commit_id v2.
• Update docs/spec-merkle-commit.md with v2 header + new patch digest spec doc.
• Add tests: determinism across engines; replay patch reproduces state_root; slice extraction for a selected slot returns minimal tick subset.

Exit criteria

• cargo test --workspace
• cargo clippy --workspace --all-targets -- -D warnings -D missing_docs
• New spec doc(s) in docs/ and decision log entry recorded.

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🔗 Similar Issues

Related Issues

• Promote AIΩN bridge doc + implement tick receipts #144
• TickReceipt: blocking causality (poset edges) #147
• Rename legacy RMG naming to WARP + link AIΩN Foundations #142

🔗 Related PRs

#145 - AIΩN bridge doc + tick receipts (#144) [merged]

👤 Suggested Assignees

• flyingrobots

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