source-paths-use-repo-alias-prefix

IN premise

Node source paths follow a `repo-alias/relative-path` convention where the first `/`-delimited segment is a key into the `repos` dict that maps aliases to filesystem roots, decoupling belief source references from absolute paths.

Summary

Source paths stored on beliefs use a two-part format where the first segment is a short alias that gets resolved to an actual filesystem location through a lookup table. This means the system can move between machines or directory structures without breaking every source reference, since only the alias mapping needs to change rather than every individual path.

Details

Sourceentries/2026/04/29/tests-test_check_stale.md