New docs/reference-cli-commands.md covers all commands, bootstrap helpers,
and how to add new commands. Updated lokale-entwicklung, entwickler-checkliste,
betriebscheck-doctor, index, and web/index.php error message to reference
bin/console instead of legacy bin/*.php scripts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
