Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

TEMPER_SHA, TEMPER_DIRTY and TEMPER_BRANCH environment variables override git context detection — for containers and other environments where git cannot answer. A non-empty TEMPER_SHA activates manual mode and takes priority over CI variables and local git.
mix temper.report --by-app groups findings by umbrella child app (derived from file paths), with per-app counts and involved files. JSON findings always carry the derived "app" field.

Recommended dependency line is now only: [:dev, :test], runtime: false, keeping mix temper.report available in the default env.
Documented umbrella setup: root-only dependency, formatter registration via config :ex_unit, and a partition-safe shared history path — verified end-to-end on Elixir 1.15 through 1.20.

Temper.Formatter — ExUnit formatter recording every test outcome to .temper/history-{partition}.jsonl, with run context (git SHA, dirty flag, CI provider, seed, partition) and failure signatures. Crash-safe: on any internal error it warns once and goes inert.
mix temper.report — flaky tests (divergent outcomes on the same clean git SHA) sorted by flake rate, plus lower-confidence suspects from dirty-tree runs. Options: --json, --min-runs, --history.
mix temper.clean — deletes recorded history.
History schema v1: append-only JSONL, one denormalized line per test outcome, partition-safe for parallel CI jobs.