Build the indexed scope token for one source.
The original rel_path stays UNINDEXED and is retained as a residual equality/prefix check for defense-in-depth.
rel_path
Vault-relative source path.
One FTS-safe, prefix-preserving path token.
Build the indexed scope token for one source.
The original
rel_pathstays UNINDEXED and is retained as a residual equality/prefix check for defense-in-depth.