# Changelog

All notable changes to this project 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).

## [0.1.0] - 2026-09-08

Initial release covering milestones M1 through M14.

### Added
- **M1 (Scaffolding)**: Python project structure with `pyproject.toml`, and tooling configuration for `ruff`, `mypy`, `bandit`, and `pre-commit`.
- **M2 (Configuration & secrets)**: Pydantic Settings for configuration management, `SecretStr` for sensitive fields, and redaction utilities (`redact_url`, `redact_secrets`, `redact_exception`) with `RedactingFormatter` for logging.
- **M3 (Data models)**: 16 Pydantic models and 6 enums across 10 modules, including frozen contracts and mutable work results.
- **M4 (Pronote sources)**: iCal fetch and parse, `pronotepy.ParentClient` integration, automatic fallback logic for `auto`, `ical`, and `pronotepy` modes, and error redaction for sensitive data.
- **M5 (Blog RSS)**: `feedparser`-based RSS client with GUID deduplication, HTTP cache support (ETag/If-Modified-Since), and `BlogRSSState` persistence.
- **M6 (Theoretical agenda)**: JSON provider with week parity (even/odd), school holidays calendar, and deterministic IDs for events.
- **M7 (CalDAV sync)**: Differential synchronization by UID, `X-PRONOTE-SYNC-MANAGED` marker for managed events, idempotent operations, preserved cancelled events, and dry-run support.
- **M8 (Agenda diff)**: `AgendaComparator` with deterministic matching, and generation of `AgendaDiff`/`AgendaChange` objects for tracking differences.
- **M9 (AI synthesis)**: `SynthesisProvider` protocol, OpenAI provider, optional `litellm` provider, and `openai-compatible` provider with degraded mode (returns `None` on failure).
- **M10 (XMPP channel)**: `XmppChannel` using `slixmpp`, formatted messages (synthesis, homeworks, changes, messages, blog), and error handling that returns `False` on failure.
- **M11 (Pipeline orchestration)**: `PipelineRunner` as composition root, 7 pipeline steps, degraded error handling, dry-run mode, and iCal reuse within a single run.
- **M12 (CLI entry point)**: `pronote-sync` command with `--dry-run` and `--log-level` options, redacted error display, and safe traceback in DEBUG mode.
- **M13 (Tests & coverage)**: 636 tests with 95.67% coverage, test fixtures (`pronote-4e.ics`, `pronote-6e.ics`), shared `conftest.py`, and secret non-leak tests.
- **M14 (Deployment)**: systemd service and timer (daily at 18:00), logrotate configuration (daily, rotate 7, compress), `check_secrets.py` pre-deployment scanner, and exploitation guide.
- **Other**: MIT License. Gitea Actions CI/CD reference for LXC/VPS (Debian/CentOS) is planned and optional, not delivered in this release.