executor.py composes the built parts into one execute(request, snapshot): S-grade fence →
router.decide → placer.pre_submit → submit → register working. The initial-submit half that
complements DriveLoop's expiry half (analogue of pink_direct.py:1645-1700).
Composition rulings encoded + tested:
- S2/S3 pain-fence (§15.2): refused WHOLE, loudly, below T14 — never silently sliced.
- placer declines (spread gate) → cross ONLY if urgency crosses on expiry; ACQUIRE ABANDONS
(a missed entry is free, §4-1). Both mutation-verified RED.
- TTL from urgency discipline: PROTECT 2s / ROTATE deadline_ms / ACQUIRE quote-lifetime.
contract.py: SGrade enum (S0-S3) + s_grade/parent_request_id fields. _constants: MAKER_QUOTE_TTL_S.
FIX (real bug, not just test): drive_loop._is_resolved EXIT was trade_id-based (a PINK
artifact — PINK reused the position's trade_id for exits). The agnostic layer never gets
the position id, so exit-done is now SIZE-based. Kept ENTER on clientOrderId match.
Full exec_unified suite: 94 green, mutation-litmus verified.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
First code of the Unified Execution Layer (SPEC_UNIFIED_EXEC_LAYER_20260714.md). Pure
policy, stdlib+Decimal only, zero I/O, zero venue knowledge, zero importers elsewhere —
adopting it breaks nothing (freeze-safe; operator unparked the build 2026-07-14).
- contract.py: ExecutionRequest input surface (§2.1) + V-TYPES (Side, UrgencyClass,
ProtectiveSpec, ExecutionAdvice), frozen, validated-at-construction, illegal states
unrepresentable. 'an asset, a size, and a prayer'.
- router.py: decide(request) -> RoutingDecision — total pure map of the §6 urgency
ladder. Encodes A1 adjudication verdict in the architecture: Router=whether-maker,
SmartPlacer=where-in-book via the wants_placement/pre_submit seam. Complementary.
- _constants.py: policy magnitudes with provenance; PROVISIONAL ones flagged for
L8/L10 calibration (never vibes, never a hardcoded cadence).
- test_exec_unified.py: 26 behaviour + mutation-litmus tests. Verified RED under
CATASTROPHIC->MAKER and ACQUIRE cross_on_expiry->True mutations.
Not yet wired: PINK drive-loop port (§7), venue dialect (§11), telemetry (§12).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
