Establishes a typed epistemic surface for stored claims without
importing any source-trust bias. The status enum (COHERENT,
CONTESTED, SPECULATIVE, FALSIFIED) describes a claim's position
in the revision graph, not the credentials of its source. No
tier in the schema carries inherent trust weight.
Three commitments:
1. epistemic_status is a position in the revision graph, not a
trust tier. Source labels (peer_consensus / outsider /
established / unauthoritative) are explicitly excluded.
2. Non-hardening invariant: no reviewed claim, relation, or
edge ever becomes unrevisable. No final/frozen/axiom flag
may be added. Stage-3 inversion (versor-conjugate
correction) is always available.
3. Coherence is the only admission signal. v1 is curator-
mediated but bias-free at the schema level; v2 must add a
structural coherence metric so the tag has geometric teeth
and not just curator authority.
Schema impact: PackMutationProposal.epistemic_status,
review outcome carries status alongside ACCEPTED/REJECTED_IDENTITY,
lexicon entries get an optional epistemic_status field,
trace_hash folds in epistemic_status for replay verification.
Named v2 gap: structural coherence metric recipe (cga_inner
agreement with the existing reviewed field) is committed as
the path forward.
Implementation lands as a Phase 5 parallel-track item alongside
Rust parity per ADR-0020.
80aa971db3