base_initialisation

Bases are initialised with `<base>/.reqlan/config.json`, `.reqlan/.rqignore` ( gitignore-syntax path filters; see configuration_rqignore ), and a sqlite ideas index under `.reqlan`.
create-base.ts creates the `.reqlan` marker and seeds a minimal `config.json` plus default `.rqignore` when the base is new.
Full install sequencing ( extension welcome vs base seeds vs agent files ): base_installation.

Interactive page: base_initialisation