[adm 3] Rebuild metadata-driven instance Properties

[artiphishle]

Roadmap: #115

Closes #118.

Status

Ready for review. The package-owner boundary is resolved with released @ankhorage/zora v2.9.3, including Heading instance-authoring metadata.

Image remains intentionally outside this scope because ZORA declares it as directManifestNode: false; manifest media authoring remains owned by [adm 14].

Previous roadmap step

[adm 2] established ZORA-owned authoring authority and theme recipe metadata. This [adm 3] PR consumes that released public metadata for the first production instance-authoring surface.

What changed

• update Studio to @ankhorage/zora ^2.9.3 and refresh bun.lock
• replace the raw arbitrary prop dump in /ankh/properties/{nodeId} with fields derived from ZORA_COMPONENT_META
• expose only props classified with authoring.authority === 'instance'
• keep theme-owned and unclassified props out of per-instance authoring
• add string, number, boolean, and declared enum editors
• preserve metadata categories and ordering
• show metadata defaults without persisting them as explicit node overrides
• keep node ID, component type, and alias as read-only node identity
• update nodes through the existing canonical manifest mutation and persistence flow
• remove the obsolete raw-value formatter used only by the former prop dump
• add package-neutral authoring model tests, page boundary tests, documentation, public exports, and a patch changeset
• add a released-package integration test for Heading through the serializable @ankhorage/zora/metadata subpath
• verify Heading content and semantics remain instance-authorable while size and color remain theme-owned

Ownership boundaries

• ZORA remains the sole owner of concrete component and authoring metadata.
• The concrete Studio UI injects ZORA_COMPONENT_META at the app/UI composition boundary.
• Package-neutral Studio helpers consume only an injected structural registry and do not recreate or mutate ZORA metadata.
• No parallel unsaved Properties model, arbitrary JSON editor, inline editor, drawer, sidebar, or theme-per-instance override path is introduced.

Validation

Green on CI run 31061885019:

• frozen dependency install with @ankhorage/zora@2.9.3
• TypeScript build
• Ankhorage Doctor validation
• lint and format check
• Knip
• full test suite, including released ZORA Heading metadata integration
• Studio Web smoke
• generated-app Web E2E
• package typecheck
• changeset status

Release

Changeset: .changeset/neat-instance-properties.md

[artiphishle]

Roadmap audit follow-up before this downstream draft is completed:

1. Consume the released ZORA version from [adm 3] Classify Heading authoring metadata zora#278 and add representative Heading integration/default coverage.
2. Replace the provisional custom boolean/choice Pressable controls and hard-coded selected border color with existing ZORA control primitives/theme tokens where their current APIs fit. Do not leave a Studio-local visual control system.
3. Rerun the full Studio validation, Web smoke, and generated-app Web E2E after the package update.

The branch remains Draft and blocked at the ZORA release boundary.