docs: Added todos.

TODOS.md

@@ -24,7 +24,10 @@
 - [ ] Syntax highlighting in production: CI (`nix build` on ubuntu-latest) has no grammar `.so`s and a machine-specific `QUERIES_PATH` nix store hash, so the deployed site renders unhighlighted. Provide grammars + queries as nix build inputs and pass paths to thor at runtime (env vars/flags).
 - [ ] Durable highlight paths: read `GRAPHS_PATH`/`QUERIES_PATH` from env vars set by the flake instead of hardcoded nix store hashes, so they survive `nix flake update` and let the grammar/query version-mismatch detector fire automatically.
 - [ ] Unit tests for highlighting helpers: `capture_name_to_css`, `escape_html`, `unescape_html`, `extract_query_token`, `helix_version_from_path`.
-- [ ] Dark `<pre>` code-block background — atom-one-dark colors are tuned for a dark bg but currently render on the light `--color-body`. (See "Theme selector" item.)
+- [ ] `<pre><code>` blocks need to set background to theme background,
+  regardless of prefers-dark. (or use a different theme)
+- [ ] `-watch` flag
+- [ ] commands
 - [ ] Review every file in thor
   - [ ] Review alerts.odin
   - [ ] Review content.odin