docs: update project todo list

docs/TODO.md

@@ -3,6 +3,8 @@
 - machoke
 - falinks
 - dotfiles
+- xatu
+- nix-style / refactor
 
 # project ideas
 
@@ -18,8 +20,8 @@
 - amazon / actualbudget exporter
 - vim-obsidian-markdown
 - dictionary cli tool
-- repo-local Nix style linter
 - kitchen.md
+- Rust project creator
 
 # migration
 
@@ -102,6 +104,9 @@
 - 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
 
@@ -109,9 +114,9 @@ Review Nix files in entrypoint order:
 
 - [x] `flake.nix`
 - [x] `src/dotfiles/default.nix`
-- [ ] `src/dotfiles/util.nix`
+- [x] `src/dotfiles/util.nix`
-- [ ] `src/dotfiles/formatter.nix`
+- [x] `src/dotfiles/formatter.nix`
-- [ ] `src/dotfiles/apps.nix`
+- [x] `src/dotfiles/apps.nix`
 - [ ] `src/dotfiles/registry.nix`
 - [ ] `configs/nixos/registry/address.nix`
 - [ ] `configs/nixos/registry/env-var.nix`