stardust:spec — the migration spec, before the migration

The spec answers the people planning a migration (what to build, reuse, fix or decide) and the agent that runs it (archetypes, block backlog, contracts, redirects, a default for every decision). The agent builds it stage by stage.

Principles

• Evidence, then judgement. Stages S1–S6 and S8 measure the live site; S7 and S9 are judgement (mapping, reuse, features, questions) recorded in judgement/ with a rationale per decision.
• Blind judgement. Judge from the source site only (reference/judgement.md); state the provenance in implementation.json#provenance.
• Variants, not templates. CMS templates are loose; plan, capture and QA by layout variant (S8).
• Every open question ships a default. A hands-off migration applies it; a recorded answer replaces it.
• Computed, never typed. Every figure in findings, feature reach and question impact is a rule (reference/knowledge.md § Rules) the knowledge stage evaluates.

Setup