Migrated from Method backlog
This issue was created from a legacy filesystem backlog card. GitHub Issues are now the live work tracker; repository docs remain Method evidence.
Source backlog: docs/method/backlog/up-next/KERNEL_contract-inverse-admission-hook.md
Original lane: up-next
Original legend: KERNEL
Original backlog card
Contract Inverse Admission Hook
Status: planned kernel/runtime implementation.
Depends on:
Why now
Undo must be witnessed history. A contract knows how to invert its own domain
semantics; Echo should provide a generic admission hook, not a generic blind
WarpOp inverse API.
What it should look like
Given:
- target tick, receipt, or range;
- current target coordinate;
- contract family;
- inverse policy;
- installed contract artifact;
Echo asks the contract to produce one or more inverse intents or a typed
obstruction. Produced inverse intents are admitted normally.
Acceptance criteria
- Building
hello from five insert ticks then unapplying C2 appends one inverse
tick.
- Reading at the new frontier is
helo.
- Original C2 remains in provenance.
- Provenance length increases by one.
- Inverse receipt links to the target receipt.
- Unmappable spans, missing receipts, unavailable inverse fragments, and
contract-version mismatches return typed obstructions.
- Sequence unapply applies deterministic ordering or reports partial success
explicitly.
- TickReceipt inverse blob or inverse fragment digest resolves through
retention when inverse material is retained.
- GC, compaction, wormhole, or checkpoint compression either preserves required
inverse evidence, provides a rehydratable cold archive, or obstructs
fine-grained unapply inside compressed ranges.
Non-goals
- Do not delete or rewrite old ticks.
- Do not expose
WarpOp replay patches as user-facing undo semantics.
- Do not silently succeed when inverse evidence is missing.
Migrated from Method backlog
This issue was created from a legacy filesystem backlog card. GitHub Issues are now the live work tracker; repository docs remain Method evidence.
Source backlog:
docs/method/backlog/up-next/KERNEL_contract-inverse-admission-hook.mdOriginal lane:
up-nextOriginal legend:
KERNELOriginal backlog card
Contract Inverse Admission Hook
Status: planned kernel/runtime implementation.
Depends on:
Why now
Undo must be witnessed history. A contract knows how to invert its own domain
semantics; Echo should provide a generic admission hook, not a generic blind
WarpOpinverse API.What it should look like
Given:
Echo asks the contract to produce one or more inverse intents or a typed
obstruction. Produced inverse intents are admitted normally.
Acceptance criteria
hellofrom five insert ticks then unapplying C2 appends one inversetick.
helo.contract-version mismatches return typed obstructions.
explicitly.
retention when inverse material is retained.
inverse evidence, provides a rehydratable cold archive, or obstructs
fine-grained unapply inside compressed ranges.
Non-goals
WarpOpreplay patches as user-facing undo semantics.