Remove code comments and fail lint on new ones

.github/workflows/ci.yml

@@ -0,0 +1,20 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: npm
+      - run: npm ci
+      - run: npm run lint
+      - run: npm run typecheck
+      - run: npm run test:unit

README.md

@@ -9,9 +9,20 @@ Theo, Julius and Maria. The agents take every typo literally.
 npm install
 npm run dev      # http://0.0.0.0:5179
 npm run build    # static files in dist/, open dist/index.html from any file server
-npm test         # Playwright play test
+npm run lint     # fails on any code comment
+npm run test:unit
+npm test         # unit tests, then the Playwright play test
 ```
 
+`npm test` starts its own Vite server on port 5180. To test a running server
+instead, set `T3TYPE_URL`, for example `T3TYPE_URL=http://gibo:5179/ npm test`.
+
+## No code comments
+
+`npm run lint` rejects comments in TypeScript, JavaScript, CSS and HTML. If code
+needs explaining, give it a clearer name or write a test. CI runs the lint on
+every push and pull request.
+
 ## How to play
 
 - The next prompt shows as gray ghost text in the composer. Type over it. Enter sends, typos included.
@@ -29,6 +40,7 @@ Threads come from `content/threads.json`, imported unchanged by
 post. Everything else is parody and labeled as such.
 
 URL options for testing: `?speed=4` runs the agents 4x faster, `?seed=N` replays
-the same thread draw, `?theme=light` or `?theme=dark` forces a theme.
+the same thread draw, `?core=N` and `?guests=N` set how many threads come from
+each core persona and from mutuals, `?theme=light` or `?theme=dark` forces a theme.
 
 See THIRD_PARTY.md for the T3 Code MIT notice.

index.html

@@ -5,7 +5,6 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>t3type</title>
     <script>
-      // Match T3 Code: the .dark class on <html> drives the dark variant.
       (function () {
         var q = new URLSearchParams(location.search).get("theme");
         var dark = q ? q === "dark" : matchMedia("(prefers-color-scheme: dark)").matches;