Add agentic workflows page to website

Add a new /workflows/ page for browsing agentic workflow definitions
with search, trigger/tag filters, and sorting. Follows the same
patterns as the existing hooks page.

New files:
- website/src/pages/workflows.astro
- website/src/scripts/pages/workflows.ts

Updated files:
- BaseLayout.astro: add Workflows nav link
- index.astro: add Workflows card to homepage
- pages/index.ts: add workflows to counts
- utils.ts: add workflow type to icons, labels, and getResourceType

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

website/src/scripts/utils.ts

@@ -228,6 +228,8 @@ export function getResourceType(filePath: string): string {
     return "skill";
   if (/(^|\/)hooks\//.test(filePath) && filePath.endsWith("README.md"))
     return "hook";
+  if (/(^|\/)workflows\//.test(filePath) && filePath.endsWith(".md"))
+    return "workflow";
   // Check for plugin directories (e.g., plugins/<id>, plugins/<id>/)
   if (/(^|\/)plugins\/[^/]+\/?$/.test(filePath)) return "plugin";
   // Check for plugin.json files (e.g., plugins/<id>/.github/plugin/plugin.json)
@@ -244,6 +246,7 @@ export function formatResourceType(type: string): string {
     instruction: "📋 Instruction",
     skill: "⚡ Skill",
     hook: "🪝 Hook",
+    workflow: "⚡ Workflow",
     plugin: "🔌 Plugin",
   };
   return labels[type] || type;
@@ -258,6 +261,7 @@ export function getResourceIcon(type: string): string {
     instruction: "📋",
     skill: "⚡",
     hook: "🪝",
+    workflow: "⚡",
     plugin: "🔌",
   };
   return icons[type] || "📄";