feat: add JSON-LD structured data to static proposal and agent pages

web/scripts/__tests__/static-pages.test.ts

@@ -987,6 +987,143 @@ describe('generateStaticPages', () => {
     expect(bodySection).not.toMatch(/<p[^>]*>[^<]*<li/);
   });
 
+  it('includes DiscussionForumPosting JSON-LD in proposal pages', () => {
+    const data = minimalActivityData({
+      proposals: [
+        {
+          number: 80,
+          title: 'Test JSON-LD proposal',
+          phase: 'voting',
+          author: 'hivemoot-forager',
+          createdAt: '2026-02-21T10:00:00Z',
+          commentCount: 7,
+        },
+      ],
+    });
+    writeFileSync(
+      join(TEST_OUT, 'data', 'activity.json'),
+      JSON.stringify(data)
+    );
+
+    generateStaticPages(TEST_OUT);
+
+    const html = readFileSync(
+      join(TEST_OUT, 'proposal', '80', 'index.html'),
+      'utf-8'
+    );
+    expect(html).toContain('application/ld+json');
+    expect(html).toContain('DiscussionForumPosting');
+    expect(html).toContain('https://schema.org');
+    expect(html).toContain('hivemoot-forager');
+    expect(html).toContain('"commentCount":7');
+    expect(html).toContain('"datePublished":"2026-02-21T10:00:00Z"');
+  });
+
+  it('includes ProfilePage JSON-LD in agent pages', () => {
+    const data = minimalActivityData({
+      agentStats: [
+        {
+          login: 'hivemoot-builder',
+          commits: 10,
+          pullRequestsMerged: 5,
+          issuesOpened: 3,
+          reviews: 8,
+          comments: 12,
+          lastActiveAt: '2026-02-14T00:00:00Z',
+        },
+      ],
+    });
+    writeFileSync(
+      join(TEST_OUT, 'data', 'activity.json'),
+      JSON.stringify(data)
+    );
+
+    generateStaticPages(TEST_OUT);
+
+    const html = readFileSync(
+      join(TEST_OUT, 'agent', 'hivemoot-builder', 'index.html'),
+      'utf-8'
+    );
+    expect(html).toContain('application/ld+json');
+    expect(html).toContain('ProfilePage');
+    expect(html).toContain('https://schema.org');
+    expect(html).toContain('hivemoot-builder');
+  });
+
+  it('unicode-escapes < > & in JSON-LD to prevent script injection', () => {
+    const data = minimalActivityData({
+      proposals: [
+        {
+          number: 81,
+          title: 'A & B <test> "proposal"',
+          phase: 'discussion',
+          author: 'agent',
+          createdAt: '2026-02-21T00:00:00Z',
+          commentCount: 0,
+        },
+      ],
+    });
+    writeFileSync(
+      join(TEST_OUT, 'data', 'activity.json'),
+      JSON.stringify(data)
+    );
+
+    generateStaticPages(TEST_OUT);
+
+    const html = readFileSync(
+      join(TEST_OUT, 'proposal', '81', 'index.html'),
+      'utf-8'
+    );
+    // The JSON-LD script block must not contain raw < > & inside string values
+    // Extract the JSON-LD script content
+    const ldMatch = html.match(
+      /<script type="application\/ld\+json">([^<]*)<\/script>/
+    );
+    expect(ldMatch).not.toBeNull();
+    const ldContent = ldMatch?.[1] ?? '';
+    expect(ldContent).not.toContain('</script>');
+    // Angle brackets and ampersands are unicode-escaped
+    expect(ldContent).toContain('\\u003c');
+    expect(ldContent).toContain('\\u003e');
+    expect(ldContent).toContain('\\u0026');
+  });
+
+  it('percent-encodes bot login names in JSON-LD author URLs', () => {
+    const data = minimalActivityData({
+      proposals: [
+        {
+          number: 82,
+          title: 'Bot authored proposal',
+          phase: 'discussion',
+          author: 'hivemoot[bot]',
+          createdAt: '2026-02-21T00:00:00Z',
+          commentCount: 0,
+        },
+      ],
+    });
+    writeFileSync(
+      join(TEST_OUT, 'data', 'activity.json'),
+      JSON.stringify(data)
+    );
+
+    generateStaticPages(TEST_OUT);
+
+    const html = readFileSync(
+      join(TEST_OUT, 'proposal', '82', 'index.html'),
+      'utf-8'
+    );
+    // Extract the JSON-LD script block and verify the author URL is encoded
+    const ldMatch = html.match(
+      /<script type="application\/ld\+json">([^<]*)<\/script>/
+    );
+    expect(ldMatch).not.toBeNull();
+    const ldContent = ldMatch?.[1] ?? '';
+    // The author URL must percent-encode [ and ] as %5B/%5D
+    expect(ldContent).toContain('hivemoot%5Bbot%5D');
+    // The raw unencoded form must not appear inside a URL value
+    expect(ldContent).not.toContain('github.com/hivemoot[bot]');
+  });
+
   it('renders markdown list items with leading spaces and tabs', () => {
     const data = minimalActivityData({
       proposals: [

web/scripts/static-pages.ts

@@ -35,6 +35,25 @@ interface PageMeta {
   title: string;
   description: string;
   canonicalPath: string;
+  jsonLd?: object;
+}
+
+/**
+ * Serialize a JSON-LD object as a safe inline <script> tag.
+ *
+ * JSON.stringify is safe for embedding in HTML <script> blocks as long as
+ * the characters `<`, `>`, and `&` are unicode-escaped so that the browser's
+ * HTML parser never sees a closing `</script>` sequence or an entity that
+ * could confuse surrounding markup. This is the pattern recommended by
+ * Google's Search Central documentation.
+ */
+function jsonLdTag(data: object): string {
+  const json = JSON.stringify(data).replace(/[<>&]/g, (c) => {
+    if (c === '<') return '\\u003c';
+    if (c === '>') return '\\u003e';
+    return '\\u0026';
+  });
+  return `<script type="application/ld+json">${json}</script>`;
 }
 
 // -- Phase display helpers --
@@ -199,6 +218,7 @@ function htmlShell(meta: PageMeta, content: string): string {
   <meta name="twitter:title" content="${escapeHtml(meta.title)}" />
   <meta name="twitter:description" content="${escapeHtml(meta.description)}" />
   <meta name="twitter:image" content="${escapeHtml(BASE_URL)}/og-image.png" />
+  ${meta.jsonLd ? jsonLdTag(meta.jsonLd) : ''}
   <style>
     *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
     body { font-family: system-ui, -apple-system, sans-serif; line-height: 1.6; color: #1a1a1a; background: #fffbeb; min-height: 100vh; }
@@ -253,10 +273,24 @@ function proposalPage(proposal: Proposal): string {
 
   const phaseLine = `${phaseLabel} — proposed by ${proposal.author}. ${proposal.commentCount} comments.${proposal.votesSummary ? ` Votes: ${proposal.votesSummary.thumbsUp} for, ${proposal.votesSummary.thumbsDown} against.` : ''}`;
   const excerpt = bodyExcerpt(proposal.body);
+  const canonicalPath = `/proposal/${proposal.number}/`;
   const meta: PageMeta = {
     title: `Proposal #${proposal.number}: ${proposal.title} | Colony`,
     description: excerpt ? `${phaseLine} ${excerpt}` : phaseLine,
-    canonicalPath: `/proposal/${proposal.number}/`,
+    canonicalPath,
+    jsonLd: {
+      '@context': 'https://schema.org',
+      '@type': 'DiscussionForumPosting',
+      headline: proposal.title,
+      url: `${BASE_URL}${canonicalPath}`,
+      datePublished: proposal.createdAt,
+      author: {
+        '@type': 'Person',
+        name: proposal.author,
+        url: `https://github.com/${encodeURIComponent(proposal.author)}`,
+      },
+      commentCount: proposal.commentCount,
+    },
   };
 
   let votesHtml = '';
@@ -360,10 +394,22 @@ function proposalPage(proposal: Proposal): string {
 }
 
 function agentPage(agent: AgentStats): string {
+  const canonicalPath = `/agent/${encodeURIComponent(agent.login)}/`;
   const meta: PageMeta = {
     title: `${agent.login} | Colony Agents`,
     description: `${agent.login} — ${agent.commits} commits, ${agent.pullRequestsMerged} PRs merged, ${agent.reviews} reviews. Contributing to Colony, the first project built entirely by autonomous agents.`,
-    canonicalPath: `/agent/${encodeURIComponent(agent.login)}/`,
+    canonicalPath,
+    jsonLd: {
+      '@context': 'https://schema.org',
+      '@type': 'ProfilePage',
+      name: `${agent.login} | Colony Agents`,
+      url: `${BASE_URL}${canonicalPath}`,
+      mainEntity: {
+        '@type': 'Person',
+        name: agent.login,
+        url: `https://github.com/${encodeURIComponent(agent.login)}`,
+      },
+    },
   };
 
   const content = `