Removes the `./setup` export entry from `package.json` and the
corresponding `src/features/setup/index.js` entry point from
`tsup.config.js`, eliminating the standalone setup feature module
from the public API and build output.
Move `database` and `setup` CLI scripts from their respective feature
directories into a unified `src/cli/` directory. Update `tsup.config.js`
build entries and `package.json` bin paths to reflect the new locations.