M12-03A Status

status: done task: inventory append, link, and library override data-blocks and dependency closures updated: 2026-08-17 America/New_York enablingTask: true parityStateChange: false

Scope

The machine inventory separately records Append, Link, and Library Override entry points, selectable data-block roots, non-root ID roles, direct/indirect/transitive/embedded dependency classes, terminal ownership actions, and override reference/hierarchy/property-operation fields.

The exact closure is an actual Blender Main ID pointer graph walked by BKE_library_foreach_ID_link, not a hard-coded Object-to-Mesh table. The inventory therefore preserves cross-library and override-only dependency distinctions needed by later ownership and invalidation contracts. It does not perform a library mutation or add a parity slice.

Findings

Blender 5.2 exposes 36 selectable library data-block collections. Screen and WorkSpace are append-only; Library is source/transitive metadata, while embedded Key IDs follow their owner.
Append can keep linked, reuse local, make local, or copy local after classifying direct, indirect, and liboverride-only dependencies. Recursive cross-library localization is explicit.
Link retains the source Library, direct ID_TAG_EXTERN, indirect ID_TAG_INDIRECT, and transitive parent-library relationships without localization.
Override retains a linked reference alongside a local override and hierarchy root. Its 17 RNA fields cover reference/root flags, property paths, operations, and local/reference subitems.
Current Web metadata represents only library source, dependency IDs, and read-only state; eight per-ID ownership, override, and invalidation semantics remain absent and mutation stays blocked.

Evidence

npm --prefix web run test:library-operation-inventory passed with roots=36 appendOnly=2 operations=3 overrideFields=17 gaps=8 next=M12-03B.
The checker binds nine Blender/Web source files and one real nested-library fixture by SHA-256, verifies link/append action and dependency-walk tokens, launches Blender 5.2, and compares the actual append/link operator properties, library collections, nested source, and override RNA.

Artifact Hashes

inventory: 0dcb16233b52b3c0be2373f489d6bf3c771c9d6564993ff98b5d63dcd322fef7
checker: 1581490d1923578293202d27a1c379eb2a8c5e13be418547d148cf09c6a783fd
package commands: a7cf339b0cf6fab17ef63e9394b2e540af60327f7bf1f7fe95823d182e0d3e63

Next Task

M12-03B: define source library ID, owner, read-only state, and invalidation token for all three operations.

Rollback

Remove the library operation inventory, checker, package command, and this status entry. Restore M12-03A to pending and the queue to M12-03A. No parity ledger rollback is required.

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