Initial commit: restructure to flat layout with ui/ and web/ at root

web/server/lib/skills-catalog/cache.js

@@ -0,0 +1,29 @@
+const DEFAULT_TTL_MS = 30 * 60 * 1000;
+
+const cache = new Map();
+
+export function getCacheKey({ normalizedRepo, subpath, identityId }) {
+  const safeRepo = String(normalizedRepo || '').trim();
+  const safeSubpath = String(subpath || '').trim();
+  const safeIdentity = String(identityId || '').trim();
+  return `${safeRepo}::${safeSubpath}::${safeIdentity}`;
+}
+
+export function getCachedScan(key) {
+  const entry = cache.get(key);
+  if (!entry) return null;
+  if (Date.now() >= entry.expiresAt) {
+    cache.delete(key);
+    return null;
+  }
+  return entry.value;
+}
+
+export function setCachedScan(key, value, ttlMs = DEFAULT_TTL_MS) {
+  const ttl = Number.isFinite(ttlMs) ? ttlMs : DEFAULT_TTL_MS;
+  cache.set(key, { expiresAt: Date.now() + ttl, value });
+}
+
+export function clearCache() {
+  cache.clear();
+}