All of metaFields is identity

SPEC-158 D3 made metaFields.*.metaType identity and left label, sentimentMap and transform overridable, so a theme had something to change. ADR-043 decision 2 reads all three as claims about content: a label is copy, a sentiment map says what the content means, and transform names a kind of formatting whose style is now formats (SPEC-166 D6). So metaFields becomes identity as a whole, for native runes too.

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Criteria completion

Tracking started Nov 2 — check back for trends.

Relationships

ID:ADR-043Status:proposed

A theme renders a vocabulary; it configures no rune

Date:2026-10-12

ID:SPEC-158Status:shipped

The identity guard is path-granular

ID:SPEC-166Status:draft

Value primitives share one contract

ID:v0.46.0Status:complete

v0.46.0 — The theme contract

main current done

claude/milestone-v0-44-0-ism7ni done changeset-release/main done claude/value-primitives-and-grid ready claude/post-v0.43-roadmap-mf1ngx ready

Nov 2, 06:26 PMe2cb222
Created (done)by bjornolofandersson
Nov 2, 11:41 AMbe024ac
Content editedby Claude
plan: WORK-670, WORK-671 done (#752)
Nov 2, 11:40 AMd2b8962
Content editedby Claude
v0.46.0 batch 1: all of metaFields is identity; the engine stops adding
Oct 28, 03:15 PM0ec343f
Content editedby Claude
plan: draft v0.45.0 and v0.46.0; WORK-660 joins v0.44.0
Oct 28, 02:54 PMc527aa0
Content editedby Claude
plan: accept ADR-042 to ADR-045; SPEC-166 D6 formats; WORK-669 to WORK-6

Acceptance Criteria

IDENTITY_FIELDS names metaFields in place of metaFields.*.metaType, and a theme override of any part of it is reported and dropped
No first-party theme or preset trips the guard
SPEC-158 D3 carries a note pointing to ADR-043
The changeset names the break for third-party themes that override label, sentimentMap or transform, with the migration: change the definition, or style through [data-field] and [data-value]

References

ADR-043: decision 2.
SPEC-158: D3.

Resolution

Completed: 2026-11-02

Branch: claude/milestone-v0-44-0-ism7ni

What was done

packages/transform/src/identity-fields.ts: IDENTITY_FIELDS names metaFields in place of metaFields.*.metaType. IDENTITY_FIELD_ATTRIBUTES keys data-meta-type to metaFields.
packages/transform/src/merge.ts: the per-entry metaType reassert is removed (a guarded override never carries metaFields), and the docs are updated.
Tests: identity-paths.test.ts has the D3 block rewritten. Each of metaType/label/sentimentMap/transform is dropped and reported as metaFields, blocks stays overridable, and the wildcard tests pass their path explicitly. identity-fields.test.ts has its list updated.
plan/specs/SPEC-158: a D3 note pointing to ADR-043.
.changeset/metafields-identity.md.

Notes

Lumina's identity-guard test (every first-party plugin, and Lumina's own overrides) passes unchanged, so nothing first-party trips the guard.
The criterion's migration names [data-value], which the engine does not emit. The changeset names [data-field], [data-meta-type] and [data-meta-sentiment] instead.