Session journey: the deductive pivot (verified, not asserted), INV-25 independent-
gold ratification, the universal-structure + field<->symbol coherence-gate synthesis,
and the autonomous build of the foundation + 3-domain anti-overfit panel (#554-557).
Records the two field-as-reasoner findings (logic is combinatorial; independence must
live in the reading) that defer the geometric wedge to dedicated research.
Marks the deductive-logic runway's PR-1 (finite-entity grounding) and PR-2 (oracle
parity) as shipped via #556.
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