1.0.0

Added

• Core functionality to poll an IMAP inbox for COMMAND, TOKEN, and optional ARGUMENTS fields.
• Token validation per command using constant-time comparison (hash_equals) to prevent timing attacks.
• Optional sender whitelist (allowed_senders); all senders are trusted if left empty.
• allow_arguments command option — when true, runtime ARGUMENTS from the request are appended to the system command.
• send_output command option — when true, command stdout is included in the notification e-mail. Defaults to false to prevent accidental output leakage.
• log_output command option — when true, command stdout is included in the log entry on success. Defaults to false.
• email_processed_action handler option — controls whether processed e-mails are marked as read (read) or permanently deleted (delete). Defaults to read.
• Logging system with UTC timestamps and daily rotating log files (logs/YYYY-MM/YYYY-MM-DD.log). Each log entry includes the sender address and command name.
• E-mail notifications for command results, missing or unknown commands, token failures, and unauthorised senders.
• Sender address is included in notification e-mails and log entries.
• Commands are executed via Symfony Process using argument arrays, preventing shell injection.
• Sender addresses are validated with FILTER_VALIDATE_EMAIL before use to prevent header injection.
• --config CLI flag (required) for specifying the configuration file. Running without arguments prints usage text.
• config.example.php example configuration file covering all available options.
• Full documentation in docs/ covering usage, architecture, and about/security model.
• Licensed under GNU General Public License v3.0.