Correct STATE_DIR to project dir, remove unnecessary pip3 check and ENV_FILE
replacement for cleaner, accurate installation.
Changes:
- Set STATE_DIR to ./state in install.sh
- Remove pip3 dependency check (included in venv)
- Remove redundant ENV_FILE sed replacement
- Update .gitignore to ignore state/ directory
Provide automated installation for Linux users to set up venv and systemd
services with proper path configuration.
Changes:
- Add install.sh with dependency checks, venv setup, and systemd configuration
- Update README to highlight automated install option
