Production build broke because our custom lint rule was compiled. The
credo linter is not available and not necessary in production.
Solution: create separate directory for dev tools.
Detects `conn = get(conn, ...)` patterns and directs to
refactor_conn_aliasing.sh for automatic fixing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>