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/pages/index.ts

@@ -11,6 +11,7 @@ interface Manifest {
     instructions: number;
     skills: number;
     hooks: number;
+    workflows: number;
     plugins: number;
     tools: number;
   };
@@ -35,7 +36,7 @@ export async function initHomepage(): Promise<void> {
   const manifest = await fetchData<Manifest>('manifest.json');
   if (manifest && manifest.counts) {
     // Populate counts in cards
-    const countKeys = ['agents', 'instructions', 'skills', 'hooks', 'plugins', 'tools'] as const;
+    const countKeys = ['agents', 'instructions', 'skills', 'hooks', 'workflows', 'plugins', 'tools'] as const;
     countKeys.forEach(key => {
       const countEl = document.querySelector(`.card-count[data-count="${key}"]`);
       if (countEl && manifest.counts[key] !== undefined) {