build: scaffold Incognito Starlight site

.gitignore

@@ -1 +1,7 @@
 .worktrees/
+node_modules/
+dist/
+.astro/
+.DS_Store
+.env*
+!.env.example

.nvmrc

@@ -0,0 +1 @@
+22.22.3

astro.config.mjs

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+import { defineConfig } from 'astro/config';
+import starlight from '@astrojs/starlight';
+import { sidebar } from './src/config/sidebar.mjs';
+
+const site = process.env.SITE || 'http://localhost:4321';
+const base = process.env.BASE || '/';
+
+export default defineConfig({
+  site,
+  base,
+  integrations: [
+    starlight({
+      title: 'Incognito Wiki',
+      description: 'Academic knowledge and student resources maintained by MSV Incognito.',
+      lastUpdated: true,
+      sidebar,
+    }),
+  ],
+});

package.json

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+{
+  "name": "incognito-wiki",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "engines": { "node": ">=22.12.0" },
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "check": "astro check && node --test",
+    "test": "node --test"
+  },
+  "dependencies": {
+    "@astrojs/starlight": "0.41.6",
+    "astro": "7.1.6",
+    "sharp": "0.35.3"
+  },
+  "devDependencies": {
+    "@astrojs/check": "0.9.10",
+    "typescript": "6.0.2"
+  }
+}

src/config/sidebar.mjs

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+export const sidebar = [{ label: 'Home', link: '/' }];

src/content.config.ts

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+import { defineCollection } from 'astro:content';
+import { docsLoader } from '@astrojs/starlight/loaders';
+import { docsSchema } from '@astrojs/starlight/schema';
+
+export const collections = {
+  docs: defineCollection({ loader: docsLoader(), schema: docsSchema() }),
+};

src/content/docs/index.mdx

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+---
+title: Home
+description: Academic knowledge and student resources maintained by MSV Incognito.
+---
+
+Migration in progress.

tests/project-structure.test.mjs

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+import assert from 'node:assert/strict';
+import { readFile } from 'node:fs/promises';
+import test from 'node:test';
+
+test('package scripts expose the local workflow', async () => {
+  const pkg = JSON.parse(await readFile('package.json', 'utf8'));
+  assert.equal(pkg.scripts.dev, 'astro dev');
+  assert.equal(pkg.scripts.build, 'astro build');
+  assert.equal(pkg.scripts.check, 'astro check && node --test');
+  assert.equal(pkg.scripts.test, 'node --test');
+});
+
+test('Astro configuration is environment-portable', async () => {
+  const config = await readFile('astro.config.mjs', 'utf8');
+  assert.match(config, /process\.env\.SITE/);
+  assert.match(config, /process\.env\.BASE/);
+  assert.match(config, /starlight\(/);
+});

tsconfig.json

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+{
+  "extends": "astro/tsconfigs/strict"
+}