seo: restore keyword/schema improvements + fix test types

- Root layout: long-tail keywords, authors field, @graph JSON-LD
  (WebApplication + Organization schema)
- /about: own title, description, and canonical metadata
- scoring.test.ts: align buildRepo with actual RepoData shape

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dotsystemsdevs

src/app/about/page.tsx

@@ -1,5 +1,17 @@
+import type { Metadata } from 'next'
 import SubpageShell from '@/components/SubpageShell'
 
+export const metadata: Metadata = {
+  title: 'About — commitmentissues',
+  description: 'How commitmentissues works: real GitHub data, a death score algorithm, and a healthy dose of dark humor for your abandoned repos.',
+  alternates: { canonical: 'https://commitmentissues.dev/about' },
+  openGraph: {
+    title: 'About — commitmentissues',
+    description: 'How commitmentissues works: real GitHub data, a death score algorithm, and a healthy dose of dark humor for your abandoned repos.',
+    url: 'https://commitmentissues.dev/about',
+  },
+}
+
 const UI = `var(--font-dm), -apple-system, sans-serif`
 
 const SECTIONS = [

src/app/layout.tsx

@@ -35,7 +35,8 @@ export const metadata: Metadata = {
   metadataBase: new URL('https://commitmentissues.dev'),
   title: 'commitmentissues — Death Certificates for Abandoned GitHub Repos',
   description: 'Paste any GitHub URL. Get an official death certificate for your abandoned repo. Cause of death, last words, and more.',
-  keywords: ['github', 'dead repo', 'abandoned project', 'death certificate', 'side project', 'open source'],
+  keywords: ['github', 'dead repo', 'abandoned project', 'death certificate', 'side project', 'open source', 'abandoned github repository', 'repo graveyard', 'unmaintained project', 'stale repository', 'github stats', 'commit activity'],
+  authors: [{ name: 'Dot Systems', url: 'https://github.com/dotsystemsdevs' }],
   alternates: { canonical: 'https://commitmentissues.dev' },
   openGraph: {
     title: 'commitmentissues - Death Certificates for Abandoned GitHub Repos',
@@ -55,13 +56,23 @@ export const metadata: Metadata = {
 
 const jsonLd = {
   '@context': 'https://schema.org',
-  '@type': 'WebApplication',
-  name: 'commitmentissues',
-  description: 'Death certificates for abandoned GitHub repos',
-  url: 'https://commitmentissues.dev',
-  applicationCategory: 'DeveloperApplication',
-  operatingSystem: 'Web',
-  offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+  '@graph': [
+    {
+      '@type': 'WebApplication',
+      name: 'commitmentissues',
+      description: 'Death certificates for abandoned GitHub repos',
+      url: 'https://commitmentissues.dev',
+      applicationCategory: 'DeveloperApplication',
+      operatingSystem: 'Web',
+      offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+      creator: { '@type': 'Organization', name: 'Dot Systems', url: 'https://github.com/dotsystemsdevs' },
+    },
+    {
+      '@type': 'Organization',
+      name: 'Dot Systems',
+      url: 'https://github.com/dotsystemsdevs',
+    },
+  ],
 }
 
 export default function RootLayout({ children }: { children: React.ReactNode }) {

src/lib/scoring.test.ts

@@ -7,15 +7,12 @@ function buildRepo(overrides: Partial<RepoData> = {}): RepoData {
   return {
     fullName: 'example/dead-repo',
     name: 'dead-repo',
-    owner: 'example',
     description: 'old side project',
-    htmlUrl: 'https://github.com/example/dead-repo',
-    archivedAt: null,
     createdAt: '2017-01-01T00:00:00.000Z',
     pushedAt: '2018-01-01T00:00:00.000Z',
     lastCommitDate: '2018-01-01T00:00:00.000Z',
     lastCommitMessage: 'final commit',
-    defaultBranch: 'main',
+    commitCount: 12,
     language: 'TypeScript',
     isArchived: false,
     isFork: false,