docs(changelog): mention discover scope-aware labeling

Author: tony

CHANGES

@@ -40,6 +40,10 @@ _Upcoming changes will be written here._
 - Writes triggered by `vcspull discover` now pass the config file through
   `PrivatePath`, so confirmations like "✓ Successfully updated ~/.vcspull.yaml"
   and dry-run notices no longer leak the absolute home directory.
+- Discover now inspects the config scope (user/system/project) before writing,
+  so user-level configs like `~/.vcspull.yaml` prefer tilde-prefixed workspace
+  keys while project-level configs keep their relative `./` sections. Tests
+  cover both behaviors to guard against regressions.
 
 ### Development