Generalizes what REALIZE accepts, on the structural-key foundation from #592.
R1c — binding_graph / arithmetic realize:
- `realize_quantitative(QuantComprehension | Refusal, ctx)` realizes a comprehended
arithmetic structure (its admissibility-checked binding_graph) as a SPECULATIVE
record with `structure_kind="binding_graph"` and a span-free `structure_key` over
symbols/facts/equations. The only wrong=0 guard needed is the `Refusal` check —
factless input is already a Refusal upstream (the fact-count gate would be vacuous).
- Extracts the shared `_realize_structured` write path so meaning_graph and
binding_graph share ONE wrong=0 dedup/store point (the `.store` call stays in the
INV-21-allowlisted realize.py).
OOV — lift the in-vocab subject gate:
- R0 declined OOV subjects on the mistaken belief that OOV grounding is
non-deterministic. It is deterministic and reboot-stable, and #591 makes it
injective. Correctness rests on the structural key, not the versor, so OOV subjects
now realize normally. The "side-effect-free" comment is corrected: probe_ingest of
an OOV token mutates the shared vocab via a session-scoped `insert_transient` that
is NOT serialized into the snapshot, so reboot-stability rests on the vault record.
Honesty: the binding_graph entities (alice, the synthesized `total`) are symbolic/OOV
so the placement versor is deterministic-GIVEN-session-state, NOT subject-determined;
reboot-stability is carried by the Shape B+ snapshot of the exact bytes, and
distinctness by structural recall — never the (possibly colliding) metric. SPECULATIVE
always; versor_condition<1e-6 + exact CGA recall preserved; no parallel learning path.
Tests: test_realize_r1c_binding_graph.py (8) + test_realize_oov.py (6, incl. a
fresh-vocab reboot proving stability rests on the vault record not the transient) +
test_realize_r0.py oov test flipped to realize. Green: 35 realize + smoke locally.
