- spec: add one-line cross-link to HOTFIXES entry per CLAUDE.md
Spec-contract policy
- HOTFIXES: rename heading from "fb-32" to "p9-fb-32" matching
the rest of the file's full-ID convention
- config: defensive assert before string-replace in negative TOML
test guards against default-value drift causing unhelpful unwrap
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
cb04bd8c8d