# Current Implementation Snapshot

This document summarizes the code that exists now, not the original plan.

## Runtime

- FastAPI app starts from [src/arbitrade/api/app.py](../../src/arbitrade/api/app.py).
- Settings come from `pydantic-settings` in [src/arbitrade/config/settings.py](../../src/arbitrade/config/settings.py).
- DuckDB is initialized and migrated on startup.
- Runtime recovery persists and restores control state and snapshots.

## Market Data and Detection

- Kraken market data is handled by native WS and thin REST code.
- Incremental triangular detector is implemented in [src/arbitrade/detection/engine.py](../../src/arbitrade/detection/engine.py).
- Currency graph and cycle indexing live in [src/arbitrade/detection/graph.py](../../src/arbitrade/detection/graph.py).

## Execution and Risk

- Multi-leg execution sequencer exists for triangular cycles.
- Pre-trade validation and trade-limit guards are wired into execution flow.
- Kill switch and stop conditions are supported.

## Dashboard

- Server-rendered dashboard uses FastAPI + Jinja2 + HTMX.
- Live metrics, overview, controls, charts, and audit fragments are exposed as separate endpoints.
- Dedicated backtesting page exists at `/dashboard/backtesting`.

## Backtesting

- Replay engine lives in [src/arbitrade/backtesting/replay.py](../../src/arbitrade/backtesting/replay.py).
- Parameter sweep runner lives in [src/arbitrade/backtesting/sweep.py](../../src/arbitrade/backtesting/sweep.py).
- Backtesting UI runs replay from a JSONL file, stores recent reports in app state, and exposes a recent-reports API.
- Experimental stat-arb scaffold lives in [src/arbitrade/strategy/stat_arb.py](../../src/arbitrade/strategy/stat_arb.py) and is gated by feature flag.

## Deployment

- Dockerfile installs runtime dependencies from `requirements/latest-runtime.in`.
- CI publishes `git.allucanget.biz/allucanget/arbitrade:latest`.
- Coolify deploys the prebuilt image and owns runtime env vars and persistent storage.

## Current Gaps

- Cross-exchange arbitrage remains deferred.
- Stat-arb is experimental, not part of default live strategy.
- Backtesting UI is functional but still a single-run/report workflow, not a full job queue.