The 2026-06-08 practice-attempts/servability-blade session note under-referenced the substrate
that already ships the serving half of its design. Doctrine ('wrong=0 = no false presentation of
epistemic status') stands; the build plan must reuse existing organs, not fork parallel ones.
Adds a binding Amendment + reframes sequencing:
- ServabilityDecision/ServabilityBlade => advance ADR-0206 core/response_governance/ (ReachPolicy /
govern_response / shape_surface, ReachLevel STRICT<APPROXIMATE<EXTRAPOLATE<CREATIVE, gated STRICT,
already disclosing [approximate]) — NOT a new object.
- the epistemic_state Literal => reuse core.epistemic_state.EpistemicState (ratified taxonomy), not
a smaller renamed enum.
- ProblemAttemptSession => extend core/comprehension_attempt/, don't fork.
- first activation = produce reserved VERIFIED via canonical comparison (scoping doc already exists),
consume through govern_response/shape_surface, prove on the yardstick, one state at a time.
Preserves the research trail (amendment, not rewrite). Docs only.
Records the wrong=0 refinement reached in discussion: wrong=0 is not a binary
answer/refuse gate but 'no false presentation of epistemic status'. Practice/
contemplation may explore typed, isolated candidate guesses; served output needs
a servability blade with more modes than verified|refuse. Proposes
ProblemAttemptSession (PRA) and ServabilityDecision (SRV), sequenced PRA -> REL ->
SRV, and traces the idea to the R1/R2/R3/CMB reader trajectory. Session doc, not
an ADR yet.
