WORK-320
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ID:WORK-320Status:done

Remove legacy placement fields; finalize contract + docs

Once every rune is on blocks/layout (WORK-319), remove the superseded SPEC-079 placement surface from RuneConfig + engine and finalize the contract. Coordinate with WORK-313 (remove the legacy slots / structure shim) so only blocks/layout plus the projection / postTransform escape hatches remain.

Priority:mediumComplexity:moderateMilestone:v0.17.0Source:SPEC-080
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Criteria completion

Criteria completion: 7 of 7 (100%) checked; tracking started on Jun 2, no incremental history yet0%25%50%75%100%Jun 2Jun 15

Tracking started Jun 2 — check back for trends.

Relationships

Implements 1
Related 1
Branches 3
main current done
claude/spec-079-implementation donechangeset-release/main donemain done

Acceptance Criteria

  • Remove zones, zoneLayouts, contentSlots, order, zoneHost, zoneHostPlacement from RuneConfig and the engine dispatcher.
  • Coordinate with WORK-313 — slots / structure removal lands together or in sequence.
  • split / chip-row layout aliases removed; only bar and definition-list remain.
  • Surface blocks in contracts. Extend generateStructureContract to read blocks / layout so projected block names (e.g. eyebrow, metadata) appear as addressable elements + childOrder — one consistent pass across plan / learning / docs (deferred here from WORK-314 / WORK-318).
  • Contracts regenerated.
  • Docs. Theme-authoring + plugin-authoring docs rewritten to the block / layout / bar / code vocabulary; zone-era documentation removed.
  • Full build + tests green.

Approach

Pure deletion + doc rewrite once nothing consumes the legacy fields. projection (hide/group/relocate) is retained as the deep-surgery escape hatch per SPEC-080 — do not remove it.

Dependencies

  • WORK-319 — all runes migrated.

References

  • SPEC-080 — Resolved decisions (projection stays).
  • Coordinate with WORK-313 (legacy slots / structure removal).

Resolution

Completed: 2026-06-02

Branch: claude/spec-079-implementation

What was done

Removed the superseded SPEC-079 placement surface now that every rune is on the SPEC-080 block model (WORK-319).

  • types: dropped zones, zoneLayouts, contentSlots, order, zoneHost, zoneHostPlacement from RuneConfig; dropped ThemeConfig.zoneLayouts and the ZoneDeclaration type; LayoutPrimitive is now 'bar' | 'definition-list' (removed split / chip-row).
  • engine: removed the zones dispatcher + machinery (assembleWithZones, renderZone, resolveZoneLayout, render{Split,ChipRow,DefList}Layout, injectIntoHost, CANONICAL_POSITION_ORDER, PREAMBLE_POSITIONS, DEFAULT_ZONE_LAYOUT, themeZoneLayouts threading). Kept shared field/value helpers (resolveField, buildChip, buildPlainValue, splitFieldValue).
  • merge: merge blocks / layout by inner key; removed the zones merge + zone/contentSlot exclusion validator; removed Lumina's theme zoneLayouts.
  • contracts: generateStructureContract now surfaces each projected block as an addressable element (source: "block", with layout + fields) and derives childOrder from layout.root. Both contract files regenerated (root 130, lumina 119).
  • CSS: removed the [data-zone-layout="split"|"chip-row"] selectors from metadata.css; comment cleanups (badge.css).
  • tests: removed engine-zones.test.ts; scaffold-css tests flipped to assert block-derived element scaffolding (the WORK-320 contract win).
  • docs: renamed theme-authoring/header-zones.md → blocks-and-layout.md and fully rewrote it to the block model; rewrote the zone sections of dimensions.md to bar/definition-list; updated 4 inbound links (dimensions ×2, runes/deflist, runes/bar) and the _layout nav. plugin-authoring had no zone-era content. content-models.md / patterns.md untouched (their zones/split are the unrelated content-model concept).
  • changeset: added (minor) covering the SPEC-080 model + the breaking config removal.

Coordination with WORK-313

The legacy slots + structure shim is intentionally RETAINED — no first-party rune uses it, but its removal (with its own changeset + deprecation window) is WORK-313, scoped to v0.18.0. WORK-320 lands "in sequence" ahead of it.

Notes

  • projection (hide/group/relocate) is retained as the deep-surgery escape hatch per SPEC-080.
  • Full build clean; 3051 tests / 250 files green.