Retheme the site as plain HTML and CSS; remove Jekyll

.gitignore

@@ -1,10 +1 @@
-_site
 .DS_Store
-.jekyll
-.jekyll-metadata
-.bundle
-.sass-cache
-Gemfile
-Gemfile.lock
-node_modules
-package.json

README.md

@@ -2,8 +2,9 @@
 
 https://redreceipt.github.io/
 
-A handwritten HTML + CSS portfolio. No JavaScript, framework, package manager,
-web fonts, tracking, or API calls. The homepage is served as written.
+Plain HTML and CSS. No framework, JavaScript, package manager, templates, or
+build step. The monospace theme supports light and dark system preferences.
+IBM Plex Mono is loaded from Google Fonts, with system monospace fallbacks.
 
 ## Preview
 
@@ -13,34 +14,25 @@ From this directory:
 python3 -m http.server 8000 --bind 127.0.0.1
 ```
 
-Open http://127.0.0.1:8000/. No install or build step is needed for the portfolio.
+Open http://127.0.0.1:8000/. This serves the same files GitHub Pages publishes.
 
-## Update the gallery
+## Edit
 
-Edit the project cards in `index.html` and styles in `portfolio.css`.
-Keep the selection small: original public projects with recent development,
-useful documentation, and something meaningful to inspect or try. Do not
-include private repositories or present upstream forks as original work.
+- Update the curated project cards in `index.html`.
+- Edit the shared theme in `portfolio.css`.
+- Write articles directly as HTML in `<slug>/index.html`, using the shared
+  stylesheet. No Markdown conversion or generated layouts are involved.
+- Keep images local and give them dimensions and descriptive alt text.
 
-The current selection is Lamplight and Animal Mania, both active in October 2026.
-Links and project descriptions are deliberately curated, not fetched in the
-browser. Revisit the selection when projects change; there is no automatic sync.
+`assets/animal-mania.webp` is a real gameplay capture from animalmania.app.
+The Lamplight preview is an HTML workflow diagram, not a screenshot.
 
-`assets/animal-mania.webp` is a real gameplay capture from animalmania.app,
-resized to 800px wide and encoded as WebP. The Lamplight preview is an HTML
-workflow diagram, not a screenshot or claimed execution output. Keep images
-local, specify dimensions, and keep the total homepage payload below 100 KB.
+## Publish
 
-## Publishing and older content
+GitHub Pages publishes `master` from the repository root. Feature branches and
+pull requests do not publish to the live site. `.nojekyll` disables Jekyll
+processing: HTML, CSS, and assets are served directly, with no site build.
 
-GitHub Pages already publishes `master` at the repository root. Merging the
-portfolio PR will update the homepage; pushing a feature branch does not
-publish it. No Pages settings changes are needed.
-
-The original Jekyll configuration, layouts, posts, and conference pages remain
-to preserve older URLs. The malformed collection default in `_config.yml`
-has been fixed so Pages can build again. Jekyll processes the legacy Markdown
-and Sass only; the portfolio has no front matter, Liquid, or generated content.
-The Python preview shows the new portfolio, not the rendered legacy pages.
-
-The original Jekyll Now license is retained in `LICENSE`.
+The old Jekyll starter content has been removed. Its placeholder URLs are not
+preserved. `LICENSE` retains the original license notice for attribution only;
+it is not a dependency.