Release v0.5.0 - Auto-create default `config.toml` on first run (no manual `init` step needed) - `ait config validate` — checks TOML syntax, glob patterns, and API key env var - `ait config path` — prints config file path (composable: `subl $(ait config path)`) - `ait config edit` — opens config in `$EDITOR` (fallback: `vi`) - Well-commented default config template with all safety rules and provider settings - `DEFAULT_CONFIG_TEMPLATE` constant in `config.rs` for reuse - 4 new unit tests (default template parsing, glob validation, invalid pattern detection) - `ConfigError` variants renamed from `ReadError`/`WriteError`/`ParseError` to `Read`/`Write`/`Parse` (clippy `enum_variant_names`) - CLI now uses `clap` subcommands (`#[derive(Subcommand)]`) alongside trailing var args - `--debug` flag is now global (works with subcommands too)