- README.md
  - [ ] "Zero is beautiful"
- [ ] Content-hash fingerprinting for CSS and JS cache busting
- [ ] Enable configuration to  opt-out of features, particular pre/post processors.
- [ ] proper date/time/now object.
- [ ] Block attributes on code fences (`{ #ex-1 }`) — hello-world.md
- [x] Emoji shortcodes (`:shrug:` etc.) — 2 instances
  - [ ] Backslash in shrug not visible.
- [ ] include-code shortcode (`{{< include-code ... >}}`) — i-ported-fd-to-odin
- [x] Nix build integration — main flake runs thor + tailwindcss instead of Hugo
- [x] OpenGraph meta tags
- [ ] Search up for `thor.json` files.
- [ ] OpenGraph meta tags — verify all fields match production site
- [ ] Table of contents support.
- [ ] Nav items should be active when the current page is selected.
- [ ] Theme selector for syntax highlighting.
  - use http://github.com/helix-editor/helix/tree/master/runtime/themes) as a
    guide
- [ ] Search for grammars in multiple places
- [ ] Download missing grammars.
- [ ] 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.)
- [ ] Review every file in thor
  - [ ] Review alerts.odin
  - [ ] Review content.odin
  - [ ] Review emoji.odin
  - [ ] Review feed.odin
  - [ ] Review footnotes.odin
  - [ ] Review frontmatter.odin
  - [ ] Review main.odin
  - [ ] Review main_test.odin
  - [ ] Review mustache_test.odin
  - [ ] Review render.odin
  - [x] Review site.odin