rqignore

`.reqlan/.rqignore` filters which paths discovery and indexing crawl, using gitignore syntax relative to the base root.
Owned by rqignore.ts in `@reqlan/analytical` so CLI and editor share behaviour.
Defaults cover `node_modules/`, virtualenvs, build dirs, VCS / editor stores, database files ( `*.db3`, sqlite ), secrets, and hidden entries; new bases seed the file via create-base.
Product configuration statement: configuration_rqignore.

Status: done

Interactive page: rqignore