# Changelog
## [0.3.0] - 2026-03-17
### Breaking Changes
- CLI: replaced `--server`/`--client` flags with `run`/`serve`/`start` subcommands. Scripts using `--server <FIFO>` must switch to `procman serve <FIFO>`. Scripts using `--client <FIFO> <CMD>` must switch to `procman start <FIFO> <CMD>`. Bare `procman` (no arguments) continues to work unchanged.
### Added
- Each subcommand has dedicated `--help` with contextual documentation
- Top-level `--help` includes an `EXAMPLES` section showing the scripted service bringup pattern
### Changed
- `serve` takes `procfile` as the first positional and `fifo` as the second (previously Procfile was top-level and FIFO was via `--server`)
### Removed
- `-s`/`--server` and `-c`/`--client` flags
## [0.2.0] - 2026-03-17
### Breaking Changes
- `procfile::parse()` now returns `(Procfile, CommandParser)` instead of just `Procfile`
- `ProcessGroup::wait_and_shutdown()` requires two additional parameters: `mpsc::Receiver<Command>` and `Arc<Mutex<Logger>>`
- Procfile command-line tokenization now uses POSIX shell quoting (`shell_words`) instead of naive whitespace splitting; quoted strings are handled correctly but Procfiles relying on the old literal behavior may parse differently
### Added
- Server mode (`--server` / `-s`): run with a named FIFO that accepts new process commands at runtime
- Client mode (`--client` / `-c`): send a command string to a running server via its FIFO
- Advisory `flock` on the Procfile to prevent multiple instances managing the same file
- `--version` flag via clap
- `CommandParser` type for parsing individual command lines into `Command` values
- `Logger::add_process()` for registering new process names after startup
- Unit and integration tests for FIFO server/client and Procfile parsing
### Changed
- CLI parsing switched from raw `std::env::args()` to clap derive API
- `ProcessGroup` supports dynamic process spawning via mpsc channel
## 0.1.0
- Initial release of procman, a foreman-like process supervisor
- Procfile parsing with `\`-continuation lines, `# comments`, and blank line stripping
- Global and inline `KEY=value` environment variable support
- `$VAR` substitution across env values, programs, and args (hard error on undefined)
- Process group management via `setpgid` with stderr merged into stdout
- Multiplexed, name-prefixed stdout output with right-aligned padding
- Per-process log files written to `./logs/`
- Graceful shutdown on SIGINT/SIGTERM: SIGTERM → 2s grace → SIGKILL
- Automatic process name deduplication with `.1`, `.2` suffixes