Added

• Rule groups: (#29) Add groups and group_imports to the configuration, a versioned <state_dir>/groups.json state document, tray switches for rule-used groups with rule counts and descriptions, and groups list / enable / disable CLI commands. Group membership is inherited from rulesets and import edges; ignored groups and explicit group state disable the rules that depend on them. Short-form import edges accept groups and ignore_imported_groups as sibling keys, and group state may be written for an id before any rule uses it.

Changed

• Dependencies: Update clap, zbus, timeago, schemars, uuid, log, futures-util, and ureq, and drop the runtime's unused thiserror dependency. Keep the plugin-author and runtime configuration schemas on draft-07 and byte-compatible across the Schemars migration.
• Packaging/Nix: Refresh the pinned cachix/install-nix-action v31 revision.

Fixed

• Developer tooling: Point just gen-config-schema at the current config schema CLI command.
• CI: Keep tray icon code generation clean under the Rust 1.98 Clippy slice-chunking lints.
• Release: Keep cargo-release from pushing the release commit and tag together so required main-branch checks can finish before publication.
• Linux/Tray: Detect Flatpak once in the runtime host and pass the sandbox state into the tray backend instead of sampling the environment twice.