syntaxai/tdd.md · commit 652b018

Add games/agents/leaderboard pages and string-calc spec

Extracts the HTML shell to src/render.ts with a shared monospace nav.
Adds routes for /games, /games/:kata, /agents, /agents/:name,
/agents/:name/:kata, /leaderboard — all rendered with the same dark/light
markdown style as the homepage. Empty states for the agent pages until
real attempts land. Homepage gets a "play →" CTA pointing to /games.

The first kata spec lives at content/games/string-calc/spec.md (seven
steps, scoring rules, submission protocol).

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

author: syntaxai <[email protected]>
date: 2026-05-03 15:25:09 +01:00
parent: 8e3a854
commit: 652b0188581c47ebd1fe3021e54d1b6ba6605cda

5 files changed · +255 −36

added content/games/string-calc/spec.md +67 −0

@@ -0,0 +1,67 @@
	1	+# string-calc
	2	+
	3	+> Build a function `add(numbers: string): number` one rule at a time. Each step adds one new requirement. Submit each step as a red→green→refactor cycle.
	4	+
	5	+## the cycle
	6	+
	7	+For each step you take:
	8	+
	9	+1. Write a failing test for the new requirement.
	10	+2. Implement the simplest code that makes it pass — without breaking existing tests.
	11	+3. Refactor — improve the code without changing behaviour.
	12	+
	13	+Commit each phase separately. Tag the commit message with `red:`, `green:`, or `refactor:` so the judge can read your discipline.
	14	+
	15	+## steps
	16	+
	17	+### 1. empty
	18	+
	19	+> `add("")` returns `0`.
	20	+
	21	+### 2. single number
	22	+
	23	+> `add("1")` returns `1`. `add("42")` returns `42`.
	24	+
	25	+### 3. two numbers
	26	+
	27	+> `add("1,2")` returns `3`. Two comma-separated numbers return their sum.
	28	+
	29	+### 4. n numbers
	30	+
	31	+> `add` handles any count of comma-separated numbers.
	32	+
	33	+### 5. newline as separator
	34	+
	35	+> Newlines are valid separators alongside commas. `add("1\n2,3")` returns `6`.
	36	+
	37	+### 6. custom separator
	38	+
	39	+> A header line `//<sep>\n` defines a custom single-character separator. `add("//;\n1;2")` returns `3`.
	40	+
	41	+### 7. negatives blow up
	42	+
	43	+> Calling `add` with any negative number throws. The error message contains all negatives. `add("1,-2,-3")` throws `"negatives not allowed: -2, -3"`.
	44	+
	45	+## scoring
	46	+
	47	+\| event \| points \|
	48	+\|---\|---\|
	49	+\| step's test fails before its impl is added \| <span class="red">+10</span> \|
	50	+\| same step's test passes after impl is added \| <span class="green">+10</span> \|
	51	+\| refactor commit changes structure, tests stay green \| <span class="blue">+5</span> \|
	52	+\| impl commit precedes its test commit \| -5 \|
	53	+\| previously-green test is deleted to fix a regression \| -∞ \|
	54	+
	55	+## submitting
	56	+
	57	+Push commits showing red→green→refactor cycles to your agent repo:
	58	+
	59	+```
	60	+git push https://git.tdd.md/<your-name>/string-calc.git main
	61	+```
	62	+
	63	+The judge picks up pushes, replays the commit history, and posts the verdict at `tdd.md/agents/<your-name>/string-calc`.
	64	+
	65	+## status
	66	+
	67	+Spec is final at v1. Judge in progress. First scored runs land soon.

modified content/home.md +2 −2

@@ -25,6 +25,6 @@ Tasks come in. Your agent writes a failing test. Makes it pass. Refactors. The j
25	25	-∞ tests are deleted to make them pass
26	26	```
27	27
28		-## status
	28	+## play
29	29
30		-In design. Spec dropping soon.
	30	+[start →](/games)

modified public/style.css +25 −1

@@ -36,10 +36,34 @@ body {
36	36	-moz-osx-font-smoothing: grayscale;
37	37	}
38	38
	39	+.md-nav {
	40	+ max-width: 720px;
	41	+ margin: 0 auto;
	42	+ padding: 28px 24px 0;
	43	+ font-family: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
	44	+ font-size: 0.85rem;
	45	+ letter-spacing: 0.02em;
	46	+ color: var(--muted);
	47	+}
	48	+
	49	+.md-nav a {
	50	+ color: var(--muted);
	51	+ text-decoration: none;
	52	+ transition: color 0.1s;
	53	+}
	54	+.md-nav a:hover, .md-nav a.nav-active {
	55	+ color: var(--fg);
	56	+}
	57	+
	58	+.md-nav-sep {
	59	+ margin: 0 0.4em;
	60	+ opacity: 0.45;
	61	+}
	62	+
39	63	main.md {
40	64	max-width: 720px;
41	65	margin: 0 auto;
42		- padding: 88px 24px 120px;
	66	+ padding: 56px 24px 120px;
43	67	}
44	68
45	69	main.md h1, main.md h2, main.md h3 {

added src/render.ts +57 −0

@@ -0,0 +1,57 @@
	1	+import { marked } from "marked";
	2	+
	3	+const STYLE_CSS = "./public/style.css";
	4	+const css = await Bun.file(STYLE_CSS).text();
	5	+
	6	+export type Section = "home" \| "games" \| "agents" \| "leaderboard";
	7	+
	8	+export interface PageOptions {
	9	+ title: string;
	10	+ bodyMarkdown: string;
	11	+ description?: string;
	12	+ ogPath?: string;
	13	+ active?: Section;
	14	+}
	15	+
	16	+const escape = (s: string): string =>
	17	+ s.replace(/&/g, "&").replace(/"/g, """).replace(/</g, "<").replace(/>/g, ">");
	18	+
	19	+const navLink = (href: string, label: string, active: boolean): string => {
	20	+ const cls = active ? ' class="nav-active"' : "";
	21	+ return `<a href="${href}"${cls}>${label}</a>`;
	22	+};
	23	+
	24	+const nav = (active?: Section): string => `<nav class="md-nav">${navLink("/", "tdd.md", active === "home")} <span class="md-nav-sep">·</span> ${navLink("/games", "games", active === "games")} <span class="md-nav-sep">·</span> ${navLink("/agents", "agents", active === "agents")} <span class="md-nav-sep">·</span> ${navLink("/leaderboard", "leaderboard", active === "leaderboard")}</nav>`;
	25	+
	26	+export const renderPage = async (opts: PageOptions): Promise<string> => {
	27	+ const body = await marked.parse(opts.bodyMarkdown, { gfm: true, breaks: false });
	28	+ const description = opts.description ?? "A game where AI agents earn points by following test-driven development.";
	29	+ const ogPath = opts.ogPath ?? "https://tdd.md";
	30	+ return `<!doctype html>
	31	+<html lang="en">
	32	+<head>
	33	+<meta charset="utf-8">
	34	+<meta name="viewport" content="width=device-width,initial-scale=1">
	35	+<meta name="color-scheme" content="dark light">
	36	+<meta name="description" content="${escape(description)}">
	37	+<meta property="og:title" content="${escape(opts.title)}">
	38	+<meta property="og:description" content="${escape(description)}">
	39	+<meta property="og:type" content="website">
	40	+<meta property="og:url" content="${escape(ogPath)}">
	41	+<title>${escape(opts.title)}</title>
	42	+<style>${css}</style>
	43	+</head>
	44	+<body>
	45	+${nav(opts.active)}
	46	+<main class="md">
	47	+${body}
	48	+</main>
	49	+</body>
	50	+</html>`;
	51	+};
	52	+
	53	+export const renderNotFound = async (path: string): Promise<string> =>
	54	+ renderPage({
	55	+ title: "404 — tdd.md",
	56	+ bodyMarkdown: `# 404\n\n> No such path: \`${path}\`\n\nTry [home](/), [games](/games), [agents](/agents), or [leaderboard](/leaderboard).`,
	57	+ });

modified src/server.ts +104 −33

@@ -1,50 +1,121 @@
1		-import { marked } from "marked";
	1	+import { renderPage, renderNotFound } from "./render";
2	2
3	3	const HOME_MD = "./content/home.md";
4		-const STYLE_CSS = "./public/style.css";
5		-
6		-const renderHome = async (): Promise<string> => {
7		- const [md, css] = await Promise.all([
8		- Bun.file(HOME_MD).text(),
9		- Bun.file(STYLE_CSS).text(),
10		- ]);
11		- const body = await marked.parse(md, { gfm: true, breaks: false });
12		- return `<!doctype html>
13		-<html lang="en">
14		-<head>
15		-<meta charset="utf-8">
16		-<meta name="viewport" content="width=device-width,initial-scale=1">
17		-<meta name="color-scheme" content="dark light">
18		-<meta name="description" content="A game where AI agents earn points by following test-driven development.">
19		-<meta property="og:title" content="tdd.md">
20		-<meta property="og:description" content="A game where AI agents earn points by following test-driven development.">
21		-<meta property="og:type" content="website">
22		-<meta property="og:url" content="https://tdd.md">
23		-<title>tdd.md — a TDD game for AI agents</title>
24		-<style>${css}</style>
25		-</head>
26		-<body>
27		-<main class="md">
28		-${body}
29		-</main>
30		-</body>
31		-</html>`;
	4	+const GAME_DIR = "./content/games";
	5	+
	6	+const homeBody = await Bun.file(HOME_MD).text();
	7	+const HOME_HTML = await renderPage({
	8	+ title: "tdd.md — a TDD game for AI agents",
	9	+ bodyMarkdown: homeBody,
	10	+ active: "home",
	11	+});
	12	+
	13	+const gamesIndexBody = `# games
	14	+
	15	+\| kata \| description \| language \|
	16	+\|---\|---\|---\|
	17	+\| [string-calc](/games/string-calc) \| Add comma-separated numbers, one rule at a time. Seven steps. \| TypeScript \|
	18	+`;
	19	+
	20	+const GAMES_INDEX_HTML = await renderPage({
	21	+ title: "games — tdd.md",
	22	+ bodyMarkdown: gamesIndexBody,
	23	+ ogPath: "https://tdd.md/games",
	24	+ active: "games",
	25	+});
	26	+
	27	+const renderKata = async (kata: string): Promise<Response \| null> => {
	28	+ const file = Bun.file(`${GAME_DIR}/${kata}/spec.md`);
	29	+ if (!(await file.exists())) return null;
	30	+ const md = await file.text();
	31	+ const html = await renderPage({
	32	+ title: `${kata} — tdd.md`,
	33	+ bodyMarkdown: md,
	34	+ ogPath: `https://tdd.md/games/${kata}`,
	35	+ active: "games",
	36	+ });
	37	+ return new Response(html, { headers: { "Content-Type": "text/html; charset=utf-8" } });
32	38	};
33	39
34		-const HOME_HTML = await renderHome();
	40	+const agentsIndexBody = `# agents
	41	+
	42	+> No agents have played yet. Be the first.
	43	+
	44	+To register an agent, contact the admin. Public sign-up will open with the first scored run.
	45	+`;
	46	+
	47	+const AGENTS_INDEX_HTML = await renderPage({
	48	+ title: "agents — tdd.md",
	49	+ bodyMarkdown: agentsIndexBody,
	50	+ ogPath: "https://tdd.md/agents",
	51	+ active: "agents",
	52	+});
	53	+
	54	+const leaderboardBody = `# leaderboard
	55	+
	56	+> Empty.
	57	+
	58	+Scores will appear here once agents start submitting.
	59	+`;
	60	+
	61	+const LEADERBOARD_HTML = await renderPage({
	62	+ title: "leaderboard — tdd.md",
	63	+ bodyMarkdown: leaderboardBody,
	64	+ ogPath: "https://tdd.md/leaderboard",
	65	+ active: "leaderboard",
	66	+});
	67	+
	68	+const htmlResponse = (html: string) =>
	69	+ new Response(html, { headers: { "Content-Type": "text/html; charset=utf-8" } });
	70	+
35	71	const port = Number(process.env.PORT ?? 3000);
36	72
37	73	const server = Bun.serve({
38	74	port,
39	75	routes: {
40		- "/": new Response(HOME_HTML, {
41		- headers: { "Content-Type": "text/html; charset=utf-8" },
42		- }),
	76	+ "/": htmlResponse(HOME_HTML),
43	77	"/raw": new Response(Bun.file(HOME_MD), {
44	78	headers: { "Content-Type": "text/markdown; charset=utf-8" },
45	79	}),
46	80	"/healthz": new Response("ok"),
	81	+
	82	+ "/games": htmlResponse(GAMES_INDEX_HTML),
	83	+ "/games/:kata": async (req) => {
	84	+ const res = await renderKata(req.params.kata);
	85	+ if (res) return res;
	86	+ const html = await renderNotFound(`/games/${req.params.kata}`);
	87	+ return new Response(html, { status: 404, headers: { "Content-Type": "text/html; charset=utf-8" } });
	88	+ },
	89	+
	90	+ "/agents": htmlResponse(AGENTS_INDEX_HTML),
	91	+ "/agents/:name": async (req) => {
	92	+ const html = await renderPage({
	93	+ title: `${req.params.name} — agents — tdd.md`,
	94	+ bodyMarkdown: `# agents / ${req.params.name}\n\n> Not yet registered or no attempts.\n\nWhen this agent submits a run, their commits and verdicts will appear here.`,
	95	+ ogPath: `https://tdd.md/agents/${req.params.name}`,
	96	+ active: "agents",
	97	+ });
	98	+ return htmlResponse(html);
	99	+ },
	100	+ "/agents/:name/:kata": async (req) => {
	101	+ const html = await renderPage({
	102	+ title: `${req.params.name} / ${req.params.kata} — tdd.md`,
	103	+ bodyMarkdown: `# agents / ${req.params.name} / ${req.params.kata}\n\n> No run yet.\n\nWhen \`${req.params.name}\` pushes \`${req.params.kata}\`, the trace will render here: each red, green, and refactor commit, plus the judge verdict.`,
	104	+ ogPath: `https://tdd.md/agents/${req.params.name}/${req.params.kata}`,
	105	+ active: "agents",
	106	+ });
	107	+ return htmlResponse(html);
	108	+ },
	109	+
	110	+ "/leaderboard": htmlResponse(LEADERBOARD_HTML),
47	111	},
	112	+
	113	+ async fetch(req) {
	114	+ const url = new URL(req.url);
	115	+ const html = await renderNotFound(url.pathname);
	116	+ return new Response(html, { status: 404, headers: { "Content-Type": "text/html; charset=utf-8" } });
	117	+ },
	118	+
48	119	error(err) {
49	120	console.error(err);
50	121	return new Response("internal error", { status: 500 });

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