2b91f587b7
Adds FoldReset registry coverage for all 22 SP18 ISV slots [483..505)
landed in PP.2 (10 D-leg + 12 B-leg), in lockstep with matching match
arms in `reset_named_state` per the existing
`every_fold_and_soft_reset_entry_has_dispatch_arm` contract test (which
catches the "add registry entry, forget dispatch arm → runtime panic
at fold boundary" pattern surfaced twice historically — SP5 #281, SP7
T7 commit 6e479c55c).
Sentinels match `sp14_isv_slots.rs` constants (single source of truth):
D-leg POS/NEG caps → 5.0 / -10.0 (SP14 P0-A REWARD_*_CAP_ADAPTIVE pattern)
D-leg HRC Welford → 0.0 (SENTINEL_WELFORD_ZERO)
D-leg DIAG/FIRE → 0.0 (Pearl-A direct-replace)
B-leg HEALTH_DIAG → 0.0 (Pearl-A)
B-leg POPART_RESET → 1.0 (one-shot per B-DD11 — see below)
B-leg TDB Welford → 0.0 (SENTINEL_WELFORD_ZERO)
B-leg RESERVED → 0.0
Slot 497 POPART_RESET_FLAG semantics: each fold start, FoldReset writes
1.0; on the first epoch of that fold the Phase 5 PopArt-reset consumer
reads 1.0, resets PopArt slot 63 EMA to identity normalization, and
writes 0.0 back — one-shot per fold. Cheap insurance against the 1+
epoch PopArt adaptation lag when switching `q_next` source from
rewards-distributed to Q-distributed in the Phase 5 atomic refactor.
New lock test `sp18_fold_reset_entries_present` asserts all 22 entries
exist with FoldReset category and a description containing "SP18 D-leg"
or "SP18 B-leg" prefix marker. Existing
`every_fold_and_soft_reset_entry_has_dispatch_arm` catches drift in
either direction (registry adds without dispatch arms, or dispatch arms
without registry entries).
Audit doc updated per Invariant 7 with PP.3 entry + full sentinel
mapping table.
Plan: docs/superpowers/plans/2026-05-08-sp18-reward-shape-hold-attractor.md
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Foxhunt
Production HFT trading system in Rust.
Architecture
The workspace contains 32 crates organized as follows:
Core Libraries (16)
| Crate | Purpose |
|---|---|
trading_engine |
Order processing, FIX 4.4, IB TWS, SIMD, RDTSC timing |
risk |
VaR, Kelly, circuit breakers, kill switches, compliance |
risk-data |
Risk data types and shared structures |
trading-data |
Trading data types |
ml |
DQN Rainbow, PPO, TFT, Mamba2, ensemble inference |
ml-data |
ML data types and feature definitions |
data |
Market data ingestion and storage |
backtesting |
Replay engine, strategy tester |
adaptive-strategy |
Ensemble execution, microstructure analysis |
common |
Shared types, resilience, error handling |
storage |
S3 and local model storage |
model_loader |
Model serialization and loading |
market-data |
Market data feed handlers |
database |
PostgreSQL access layer (SQLx) |
config |
Configuration management |
tli |
CLI commands and tooling |
Services (8)
| Service | Purpose |
|---|---|
backtesting_service |
gRPC backtesting service |
broker_gateway_service |
FIX routing, broker connectivity |
trading_service |
Core trading operations |
ml_training_service |
Model training orchestration |
data_acquisition_service |
Market data acquisition |
trading_agent_service |
Autonomous trading agents |
api_gateway |
gRPC API gateway with auth |
web-gateway |
Axum REST + WebSocket gateway |
Frontend
web-dashboard/ -- React 19 + TypeScript + Vite + TradingView charts.
Building
# Check compilation (no PostgreSQL required)
SQLX_OFFLINE=true cargo check --workspace
# Run tests for a specific crate
SQLX_OFFLINE=true cargo test -p <crate> --lib
# Clippy
SQLX_OFFLINE=true cargo clippy --workspace
ML Models
Four production model architectures on Candle v0.9.1 with CUDA:
- DQN Rainbow -- Deep Q-Network with prioritized replay, dueling heads, noisy nets
- PPO -- Proximal Policy Optimization with GAE and LSTM policies
- TFT -- Temporal Fusion Transformer for multi-horizon forecasting
- Mamba2 -- State space model for sequence prediction
Each model has a standalone trainer and a UnifiedTrainable adapter for the hyperopt pipeline.
Infrastructure
- Git: Gitea at
git.fxhnt.ai(Tailscale-only), Scaleway DEV1-S - Observability: OpenTelemetry OTLP (env
OTEL_EXPORTER_OTLP_ENDPOINT) - Database: PostgreSQL with SQLx offline mode for CI
License
Proprietary. All rights reserved.