Update ct/mealie.sh to use Node.js 24, enhance backup and restore logic, ensure required environment variables are set, and improve frontend rebuild and dependency installation steps. Minor cleanup in install/mealie-install.sh by removing unnecessary blank lines.
Switches backend environment setup from Poetry to uv, updates start script to use 'uv run mealie', and simplifies database setup using a helper function. Removes Poetry-related build and install steps, and updates NLTK data download and environment variable handling for consistency.
