feat: Integrate ClawdHub skill registry

packages/web/server/lib/skills-catalog/clawdhub/index.js

@@ -0,0 +1,30 @@
+/**
+ * ClawdHub integration module
+ * 
+ * Provides skill browsing and installation from the ClawdHub registry.
+ * https://clawdhub.com
+ */
+
+export { scanClawdHub } from './scan.js';
+export { installSkillsFromClawdHub } from './install.js';
+export {
+  fetchClawdHubSkills,
+  fetchClawdHubSkillVersion,
+  fetchClawdHubSkillInfo,
+  downloadClawdHubSkill,
+} from './api.js';
+
+/**
+ * Check if a source string refers to ClawdHub
+ * @param {string} source
+ * @returns {boolean}
+ */
+export function isClawdHubSource(source) {
+  return typeof source === 'string' && source.startsWith('clawdhub:');
+}
+
+/**
+ * ClawdHub source identifier used in curated sources
+ */
+export const CLAWDHUB_SOURCE_ID = 'clawdhub';
+export const CLAWDHUB_SOURCE_STRING = 'clawdhub:registry';