os-doc-hygiene: sync calibrate-assessment-inventory delta specs to main + archive change
Main specs updated: lifecycle-rulebook (+nominations memory, +canonical
writer-enforced ordering, envelope modified), calibrate (+intake filter,
+consult persistence, persistence-by-scope and class-never-path modified),
doc-clean (extract-then-delete extracted.md pointer). Change archived to
openspec/changes/archive/2026-07-15-calibrate-assessment-inventory/.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LjFRroqLsvkL2WrMJtRBrK
3466159f7c