You are a read-only repo investigator shaping Harness Kit backlog 092.

Objective: map the smallest implementation surface for HTML-first docs with sparse generated image primitives, considering backlog 087's design-contract/provenance ideas only where they help.

Scope:
- Read `backlog.d/092-html-first-docs-and-image-primitives.md`.
- Read `backlog.d/087-open-design-design-contracts.md`.
- Inspect docs generator/checker/source files: `docs/copy/site.json`, `scripts/build-docs-site.py`, `scripts/check-docs-site.py`, and related shell wrappers.
- Do not edit files.

Output, max 700 words:
1. Recommended first-slice architecture and exact files to touch.
2. Where image declarations should live and why.
3. What from 087 should apply to 092, and what should stay separate.
4. Highest implementation risk.
5. Best executable oracle/checker shape.
