Slate V2 Core Deleted Test-Family Closeout

Historical batch note. The live closure read is now folded into release-file-review-ledger.md.

Scope

Close the deleted packages/slate/test/** family bucket from the approved Slate Core Deleted Test-Family Closure batch.

Aggregate Closure Matrix

Family	Deleted count	Current disposition	Artifact
`interfaces/**`	`576`	helper-heavy surface is mirrored by current proof; `CustomTypes` is explicit skip	2026-04-09-slate-v2-interfaces-family-deleted-test-closure.md
`transforms/**`	`408`	current narrow transform contract is mirrored or directly recovered; broader legacy breadth is explicit skip	2026-04-09-slate-v2-transforms-family-deleted-test-closure.md
`operations/**`	`31`	raw operation seam is directly recovered and explicit skips are named	2026-04-09-slate-v2-operations-family-deleted-test-closure.md
`normalization/**`	`20`	current default-vs-explicit normalization split mirrors the deleted rows	2026-04-09-slate-v2-normalization-family-deleted-test-closure.md
`utils/**` + root `index.js` + `jsx.d.ts`	`13`	surviving string-unit value is mirrored; deleted helper/harness residue is explicit skip	2026-04-09-slate-v2-utils-and-root-test-entrypoint-closure.md

Totals:

576 + 408 + 31 + 20 + 13 = 1048
reconciled total: 1048

Closeout Read

the deleted packages/slate/test/** bucket is no longer an unclassified release mystery
current-value seams are either:
- mirrored by the live proof stack
- directly recovered on the current engine
- explicitly skipped with named rationale

Important Boundary

This closes the core deleted test-family batch only.

It does not close the broader major file/test deletion review bucket in release-file-review-ledger.md, because deleted families still remain outside packages/slate/test/**:

packages/slate-react/test/**
packages/slate-history/test/**
example/browser/supporting-package deleted families

Verification

Final gate rerun passed for the core deleted test-family batch:

yarn test:mocha
yarn workspace slate-react run test
yarn workspace slate-dom test
yarn test:custom
yarn lint:typescript

Supporting focused reruns also passed during closure work:

yarn exec mocha --require ./config/babel/register.cjs ./packages/slate/test/operations-contract.ts ./packages/slate/test/transforms-contract.ts
yarn exec mocha --require ./config/babel/register.cjs ./packages/slate/test/range-ref-contract.ts ./packages/slate/test/operations-contract.ts ./packages/slate/test/transforms-contract.ts --grep 'rebases range refs inside the moved top-level block when moveNodes targets a later slot|rebases selection with the effective move_node target when moving to a later sibling slot|moveNodes can move a top-level block inside the next block container'
yarn exec mocha --require ./config/babel/register.cjs ./packages/slate/test/snapshot-contract.ts --grep 'supports merge_node on an element path and preserves moved descendant ids|supports path-based mergeNodes helper calls on element nodes|mirrors the legacy wrapNodes/path/block.tsx oracle row'