- Add bacon.toml for Rust development watching with keybindings
- Update Justfile to use bacon for dev watching
- Configure frontend to build to ./public for backend serving
- Improve Justfile organization with comments and better task separation
- Add dev-backend and dev-frontend tasks for separate workflows
- Minor formatting fix in backend/src/state.rs
Introduce AppError enum to replace panic-based error handling in executable loading and state management. Adds proper error propagation with descriptive error messages for missing executables, key patterns, and environment variables.
