diff --git a/docs/TODO.md b/docs/TODO.md
index 157d245..060fa30 100644
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -102,6 +102,9 @@
 - better remote deployment
 - expose remote deployment as a flake app, replacing the Fish-only `deploy-to` workflow
 - centralize shared system group names, starting with the `storage` group
+- Investigate Rust Bazel target structure.
+  Prefer clear per-file dependency edges, but `rust_library` maps each target to a crate.
+  Decide whether wrapper rules or another pattern can improve graph clarity without forcing artificial crate boundaries.
 
 ## nix refactor