feat(routing): W1 no-inherit — fable skill-runners, opus review dispatches, dispatch-tier doctrine (BDR-077)
No dispatched agent inherits the session model anymore:
- client-handover-writer's 7 general-purpose skill-runner dispatch sites
carry model: "fable" (+ normative rule; spike-verified alias — resolves
claude-fable-5, enum-validated, loud failure, never silent fallback)
- ship-feature STEP 6 + init-project STEP 10 code-review dispatches carry
model: "opus" (was: inherit — the leak the maps exposed)
- model-gate.md §4: dispatch-tier doctrine (typed = frontmatter pin,
built-ins = explicit model= at every call site)
- census §12 (66 pass), make test green
Bastien Chanot
3f7c754239