Prove the Studio-to-Spacefast WP Docs workflow

[chubes4]

Summary

Make Git Markdown canonical while proving an optional reversible WordPress Studio and MDI authoring loop, a Blume static build, and approval-gated Spacefast publication.

What changed

• Add an environment-neutral Studio/MDI verifier with read-only and reversible mutation modes, document the split content/state setup, and expose npm verification commands.

How to test

1. Run bash -n tests/*.sh; expect All repository shell gates parse successfully..
2. Run bash tests/verify-studio-spacefast.sh; expect The 403-record corpus, Blume build, representative routes, and mocked Spacefast publication contract pass..
3. Run WP_DOCS_STUDIO_SITE_DIR=/path/to/site bash tests/verify-studio-mdi.sh --mutate; expect Primary-mode counts, split state, both authoring directions, exact fixture restoration, and Git cleanliness pass for a compatible configured Studio site..

Compatibility

No WordPress runtime API, plugin extension path, or persisted content schema changes. Git Markdown remains canonical; Studio is optional, MDI runtime state stays outside the corpus, and Spacefast publication remains approval-gated.

Evidence

• Durable run execution: Succeeded
• Reviewer-resolvable source evidence: Prove the Studio-to-Spacefast headless WP Docs workflow #14
• gate-1: Passed
• gate-2: Passed
• gate-3: Passed

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode via Homeboy
• Model: openai/gpt-5.6-terra
• Used for: Drafted the Studio/MDI verifier, remediation, documentation, and deterministic tests; Chris reviews and owns the change.

Source relationships

• Closes Prove the Studio-to-Spacefast headless WP Docs workflow #14