Add Agentic Workflows as a new resource type

Add support for contributing Agentic Workflows — AI-powered repository
automations that run coding agents in GitHub Actions, defined in markdown
with natural language instructions (https://github.github.com/gh-aw).

Changes:
- Create workflows/ directory for community-contributed workflows
- Add workflow metadata parsing (yaml-parser.mjs)
- Add workflow README generation (update-readme.mjs, constants.mjs)
- Add workflow data to website generation (generate-website-data.mjs)
- Update README.md, CONTRIBUTING.md, and AGENTS.md with workflow docs,
  contributing guidelines, and code review checklists

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

eng/update-readme.mjs

@@ -17,12 +17,14 @@ import {
     TEMPLATES,
     vscodeInsidersInstallImage,
     vscodeInstallImage,
+    WORKFLOWS_DIR,
 } from "./constants.mjs";
 import {
     extractMcpServerConfigs,
     parseFrontmatter,
     parseSkillMetadata,
     parseHookMetadata,
+    parseWorkflowMetadata,
 } from "./yaml-parser.mjs";
 
 const __filename = fileURLToPath(import.meta.url);
@@ -577,6 +579,67 @@ function generateHooksSection(hooksDir) {
   return `${TEMPLATES.hooksSection}\n${TEMPLATES.hooksUsage}\n\n${content}`;
 }
 
+/**
+ * Generate the workflows section with a table of all agentic workflows
+ */
+function generateWorkflowsSection(workflowsDir) {
+  if (!fs.existsSync(workflowsDir)) {
+    console.log(`Workflows directory does not exist: ${workflowsDir}`);
+    return "";
+  }
+
+  // Get all workflow folders (directories)
+  const workflowFolders = fs.readdirSync(workflowsDir).filter((file) => {
+    const filePath = path.join(workflowsDir, file);
+    return fs.statSync(filePath).isDirectory();
+  });
+
+  // Parse each workflow folder
+  const workflowEntries = workflowFolders
+    .map((folder) => {
+      const workflowPath = path.join(workflowsDir, folder);
+      const metadata = parseWorkflowMetadata(workflowPath);
+      if (!metadata) return null;
+
+      return {
+        folder,
+        name: metadata.name,
+        description: metadata.description,
+        triggers: metadata.triggers,
+        tags: metadata.tags,
+        assets: metadata.assets,
+      };
+    })
+    .filter((entry) => entry !== null)
+    .sort((a, b) => a.name.localeCompare(b.name));
+
+  console.log(`Found ${workflowEntries.length} workflow(s)`);
+
+  if (workflowEntries.length === 0) {
+    return "";
+  }
+
+  // Create table header
+  let content =
+    "| Name | Description | Triggers | Bundled Assets |\n| ---- | ----------- | -------- | -------------- |\n";
+
+  // Generate table rows for each workflow
+  for (const workflow of workflowEntries) {
+    const link = `../workflows/${workflow.folder}/README.md`;
+    const triggers = workflow.triggers.length > 0 ? workflow.triggers.join(", ") : "N/A";
+    const assetsList =
+      workflow.assets.length > 0
+        ? workflow.assets.map((a) => `\`${a}\``).join("<br />")
+        : "None";
+
+    content += `| [${workflow.name}](${link}) | ${formatTableCell(
+      workflow.description
+    )} | ${triggers} | ${assetsList} |\n`;
+  }
+
+  return `${TEMPLATES.workflowsSection}\n${TEMPLATES.workflowsUsage}\n\n${content}`;
+}
+
 /**
  * Generate the skills section with a table of all skills
  */
@@ -921,6 +984,7 @@ async function main() {
     const promptsHeader = TEMPLATES.promptsSection.replace(/^##\s/m, "# ");
     const agentsHeader = TEMPLATES.agentsSection.replace(/^##\s/m, "# ");
     const hooksHeader = TEMPLATES.hooksSection.replace(/^##\s/m, "# ");
+    const workflowsHeader = TEMPLATES.workflowsSection.replace(/^##\s/m, "# ");
     const skillsHeader = TEMPLATES.skillsSection.replace(/^##\s/m, "# ");
     const pluginsHeader = TEMPLATES.pluginsSection.replace(
       /^##\s/m,
@@ -959,6 +1023,15 @@ async function main() {
       registryNames
     );
 
+    // Generate workflows README
+    const workflowsReadme = buildCategoryReadme(
+      generateWorkflowsSection,
+      WORKFLOWS_DIR,
+      workflowsHeader,
+      TEMPLATES.workflowsUsage,
+      registryNames
+    );
+
     // Generate skills README
     const skillsReadme = buildCategoryReadme(
       generateSkillsSection,
@@ -990,6 +1063,7 @@ async function main() {
     writeFileIfChanged(path.join(DOCS_DIR, "README.prompts.md"), promptsReadme);
     writeFileIfChanged(path.join(DOCS_DIR, "README.agents.md"), agentsReadme);
     writeFileIfChanged(path.join(DOCS_DIR, "README.hooks.md"), hooksReadme);
+    writeFileIfChanged(path.join(DOCS_DIR, "README.workflows.md"), workflowsReadme);
     writeFileIfChanged(path.join(DOCS_DIR, "README.skills.md"), skillsReadme);
     writeFileIfChanged(
       path.join(DOCS_DIR, "README.plugins.md"),