M12-03K Status

status: done task: expose exactly one verified override writer property updated: 2026-08-17 America/New_York enablingTask: false parityStateChange: false

Scope

Schema-1 override writer accepts exactly SET_M12_OVERRIDE_VALUE for the property path ["m12_override_value"]. It requires LOCAL_OVERRIDE, readOnly=false, referenceReadOnly=true, matching local/reference/hierarchy IDs, and the current revision. A valid write updates only the verified value and advances the local revision by one.

Linked ownership, a second property path, identity drift, stale revision, malformed fields, and values outside the bounded float range are blocked before any writer commit.

Evidence

npm --prefix web run test:library-override-writer passed 4/4 unit tests.
The valid request applies one property and increments revision exactly once while preserving local override ownership and reference read-only semantics.
Stale, linked-owner, identity, alternate-operation, alternate-property, malformed, and out-of-range requests fail closed.

Artifact Hashes

protocol: dd181c7e9946b98334a5d1c686887afecfe3fc11d732beec246e40bf11a155aa
unit: e41bd32eb4ce4d331a20ecb91f3325a27f461b9ae85e98940d5afd482ec21c4c
manifest: 9eeee93e4a806aa59b5c53a6485fe3a1b5e3972c1d2585cdc71b7cfc293afb70
package commands: cfb232baa494ff59f6c8d65514a08c86332ee9354350b2a0392b6f932a7ee42c

Next Task

M12-03L: block override stale source/revision before Main commit.

Rollback

Remove the override writer protocol, unit suite, manifest, package command, and this status entry. Restore M12-03J to pending and move the machine queue back to M12-03K. No parity ledger rollback is required.

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