CI on push to master/main: cargo test, native arm64 build on the Pi5
runner, cross-compiled x64 build, rolling 'latest' release with both
binaries and checksums.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Introduced a new `Config` struct for loading application configuration from a TOML file.
- Added support for keybindings and panel configurations, including status widgets.
- Implemented `PtyTerminal` for handling pseudo-terminal interactions.
- Created a rendering module to manage the display of application windows, panels, and dropdowns.
- Refactored the main application loop to utilize the new configuration and rendering logic.
- Removed legacy code related to event handling and rendering from `main.rs`.
