web/ (pyBegin site):
- Playground: 60 annotated, self-contained tutorial versions of the
  runnable projects (originals under projects/ left untouched); rendered
  README panel; draggable sidebar / editor / console / README splitters;
  lucide-react icons replacing emoji glyphs.
- Per-project contextual emojis and contributor credit (GitHub handle +
  avatar), generated into catalog.json / authors.json by scripts/.
- Fixes: AES256 needs pycryptodome; jokenpo / blind-auction / pig-latin
  made self-contained; first-run Pyodide worker hang.
- Migrated npm -> pnpm with supply-chain hardening: pinned packageManager,
  minimumReleaseAge, blocked install scripts, postcss security override.

projects/: README documentation pass across the catalog; ToDoList
Pyodide-runnable verdict corrected. Removed stale root config
(wrangler.jsonc, pyproject.toml, uv.lock) and .wrangler cache.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

…inner-projects

- New /contributors page listing all 240 contributors (avatar, name,
  GitHub profile link), generated from the README contributors block by
  scripts/gen-contributors.mjs.
- Replace initial-letter avatars with real GitHub avatars on the homepage.
  Use direct avatars.githubusercontent.com URLs so they satisfy the site's
  COEP: require-corp header — github.com/<handle>.png 302-redirects and the
  redirect is blocked under COEP.
- Expand the homepage contributor wall from 12 to 30 cards; cards link out
  to GitHub profiles.
- Redesign the nav bookmark control as a labelled toggle button (lucide
  icon + count) with a clear active state, replacing the bare circle.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

The per-project `## Pyodide-runnable` README section was noisy. Move every verdict into projects/todo.json as a structured registry ({name, status, reason}) with a status_values legend. Replaces the old todo.md checklist.

gen-catalog.mjs no longer parses that README section; it derives the catalog `runnable` flag from whether a playground file exists. catalog.json is unchanged (270 projects, 59 runnable).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Two README-wide changes:

- Removed the trailing `## Pyodide-runnable` section from every project
  README; that verdict now lives in projects/todo.json.
- Added an `## Example` section to ~265 READMEs so visitors can see what
  each program does before running it — an input/output transcript for
  console programs, a numbered walk-through for GUI/game/web apps. Each
  example was written against the project's actual source.

Also: renamed the maths project to "Mensuration Calculator" so it no
longer sorts first in the playground sidebar, fixed two wrong run
commands (BMI calculator, Calculator), and dropped a personal banner
from the maths playground file.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Rework the playground workspace into a LeetCode-style split: the README is
now a full-height pane on the left, with the editor stacked over the terminal
on the right. Vertical drag handle resizes README vs editor column; horizontal
handle resizes editor vs terminal.

- README pane collapses to a slim rail; project sidebar collapses to a rail
  too (state persisted to localStorage).
- Thin, subtle scrollbars site-wide (scrollbar-width + ::-webkit-scrollbar).
- Fix double border on the README body — it shared the .s-readme class, whose
  card chrome (border/shadow/radius) drew a second box inside the pane.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>