A model-style proposer submits a claim, evidence bundle, and optional
bounded-inference block; CORE alone assigns the typed epistemic state
drawn from the canonical core.epistemic_state taxonomy (no parallel
enum) and emits a deterministic, replayable evidence artifact.
The proposer cannot set assigned_state, status, trace_hash,
authority_path, evidence_ledger, or normative_clearance: the closed
recursive schema rejects any root-level injection before state
evaluation runs, and proposer-supplied proposed_state/trace_hash are
recorded as ignored and never read.
Adds closed schema, six fixtures, pinned expected artifacts, a
double-run byte-identical runner with hardened output-dir policy, and a
22-test suite. No network, subprocess, eval/exec, model API, or side
effects beyond demo output.
