chore: import upstream snapshot with attribution

docs/scripts/verify-deploy-output.mjs

@@ -0,0 +1,70 @@
+import { readFileSync } from 'node:fs';
+
+const deployTarget = process.env.DEPLOY_TARGET ?? 'custom';
+const base = deployTarget === 'ghpages' ? '/InvokeAI' : '';
+const withBase = (path) => `${base}${path}`;
+
+const expectations = [
+  {
+    file: 'index.html',
+    includes: [
+      `href="${withBase('/_astro/')}`,
+      `src="${withBase('/_astro/')}`,
+      `href="${withBase('/start-here/installation/')}`,
+    ],
+    excludes: deployTarget === 'custom' ? ['href="/InvokeAI/', 'src="/InvokeAI/'] : ['href="/_astro/', 'src="/_astro/'],
+  },
+  {
+    file: 'contributing/index.html',
+    includes: [`href="${withBase('/contributing/new-contributor-guide/')}`],
+    excludes: [
+      deployTarget === 'custom'
+        ? 'href="/InvokeAI/contributing/new-contributor-guide/"'
+        : 'href="/contributing/new-contributor-guide/"',
+      'newContributorChecklist.md',
+    ],
+  },
+  {
+    file: 'contributing/contribution_guides/newContributorChecklist/index.html',
+    includes: [
+      `Redirecting to: ${withBase('/contributing/new-contributor-guide')}`,
+      `content="0;url=${withBase('/contributing/new-contributor-guide')}`,
+      `href="${withBase('/contributing/new-contributor-guide')}`,
+    ],
+    excludes: deployTarget === 'custom'
+      ? [
+          'Redirecting to: /InvokeAI/contributing/new-contributor-guide',
+          'content="0;url=/InvokeAI/contributing/new-contributor-guide',
+          'href="/InvokeAI/contributing/new-contributor-guide',
+        ]
+      : [
+          'Redirecting to: /contributing/new-contributor-guide',
+          'content="0;url=/contributing/new-contributor-guide',
+          'href="/contributing/new-contributor-guide',
+        ],
+  },
+];
+
+const errors = [];
+
+for (const { file, includes = [], excludes = [] } of expectations) {
+  const html = readFileSync(new URL(`../dist/${file}`, import.meta.url), 'utf8');
+
+  for (const expected of includes) {
+    if (!html.includes(expected)) {
+      errors.push(`${file} is missing ${expected}`);
+    }
+  }
+
+  for (const unexpected of excludes) {
+    if (html.includes(unexpected)) {
+      errors.push(`${file} still contains ${unexpected}`);
+    }
+  }
+}
+
+if (errors.length > 0) {
+  throw new Error(`${deployTarget} output validation failed:\n- ${errors.join('\n- ')}`);
+}
+
+console.log(`${deployTarget} output links and assets look correct.`);