v0.8.1

Fixes from the first cross-harness dogfood — a Codex session resumed the design loop from nothing but the repo pointer and the published CLI, and surfaced two real defects (ADR 0064).

• Retired is a closed question: the evaluator excludes status: retired subjects from the enrichment target set. Retirement is the recorded descoping decision — no subject question stays open against it, retired concepts still serve as relationship counterparts, and if the last live subject of a kind retires, the workspace-level question correctly reopens. Catalogue 0.5's resolutions prescribe retirement for descoping; whole-subject deletion through apply is deliberately deferred (#123).
• Flow-style items survive enrichment: apply field inserts after - { id: x, ... } items corrupted the sequence (rejected by the compile gate), and remove could silently delete the whole item line. All three mutation paths now rewrite a flow item as a block mapping with the change applied.