# Changelog

All notable changes to AR-Autopilot will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

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## [Unreleased]

## [0.1.0] — Sprint 0 — Foundations — 2026-05-17

### Added

- Repository structure following the layout defined in the project brief (section 11)
- Python package skeleton `arautopilot` with submodules:
  - `core/` — data model (Pydantic v2): modes, alarms, actuator config, PID config,
    vessel config, knob state, project config, IDs
  - `library/` — curated seed: 2 actuator profiles (hydraulic reversible,
    electric DC reversible) and 2 default tunings (yacht motor planeo 30 m, 40 m)
  - `studio/` — empty stubs for Sprint 4
  - `tests/` — pytest suite covering the core data model
- Firmware skeleton: `firmware/ar_autopilot_v1/src/hal/pinout.h` only —
  21 I/O assignment for the AR-NMEA-IO v1.0 board, no functional code yet
- Build configuration:
  - `pyproject.toml` with Pydantic v2, PyYAML, python-dateutil
  - Dev dependencies: pytest, pytest-cov, ruff, mypy
  - Ruff + mypy strict configuration
- `examples/sprint0_demo.py` — end-to-end project creation, save, and reload
- Documentation moved/created:
  - `docs/AR_Autopilot_brief.md` — full project brief
  - `docs/architecture.md` — one-page architecture overview
- `LICENSE.txt` — Proprietary, all rights reserved
- `.gitignore` covering Python, Flutter, PlatformIO, IDEs, Windows artifacts

### Notes

- **No functional firmware**, Studio GUI, or display in this sprint — those
  start in Sprint 1, 4, and 4 respectively.
- The seed PID tunings are **conservative starting values** drawn from
  classical marine control literature (Fossen, Perez). They are explicitly
  **not** the integrator's affinated production values, which remain IP.
- Python ≥3.11 required.