Add unit tests for models and services

- Implemented unit tests for the Package model, covering methods such as generateId, findById, findByName, and version management.
- Created unit tests for the Repository model, including repository creation, name validation, and retrieval methods.
- Added tests for the Session model, focusing on session creation, validation, and invalidation.
- Developed unit tests for the User model, ensuring user creation, password hashing, and retrieval methods function correctly.
- Implemented AuthService tests, validating login, token refresh, and session management.
- Added TokenService tests, covering token creation, validation, and revocation processes.

test/helpers/storage.helper.ts

@@ -0,0 +1,104 @@
+/**
+ * Storage helper - S3/MinIO verification utilities for tests
+ *
+ * NOTE: These are stub implementations for testing.
+ * The actual smartbucket API should be verified against the real library.
+ */
+
+import { testConfig } from '../test.config.ts';
+
+// Storage is optional for unit/integration tests
+// E2E tests with actual S3 operations would need proper implementation
+let storageAvailable = false;
+
+/**
+ * Check if test storage is available
+ */
+export async function checkStorageAvailable(): Promise<boolean> {
+  try {
+    // Try to connect to MinIO
+    const response = await fetch(`${testConfig.s3.endpoint}/minio/health/live`, {
+      method: 'GET',
+    });
+    storageAvailable = response.ok;
+    return storageAvailable;
+  } catch {
+    storageAvailable = false;
+    return false;
+  }
+}
+
+/**
+ * Initialize test storage connection
+ */
+export async function setupTestStorage(): Promise<void> {
+  await checkStorageAvailable();
+  if (storageAvailable) {
+    console.log('[Test Storage] MinIO available at', testConfig.s3.endpoint);
+  } else {
+    console.log('[Test Storage] MinIO not available, storage tests will be skipped');
+  }
+}
+
+/**
+ * Check if an object exists in storage (stub)
+ */
+export async function objectExists(_key: string): Promise<boolean> {
+  if (!storageAvailable) return false;
+  // Would implement actual check here
+  return false;
+}
+
+/**
+ * List objects with a given prefix (stub)
+ */
+export async function listObjects(_prefix: string): Promise<string[]> {
+  if (!storageAvailable) return [];
+  // Would implement actual list here
+  return [];
+}
+
+/**
+ * Delete an object from storage (stub)
+ */
+export async function deleteObject(_key: string): Promise<void> {
+  if (!storageAvailable) return;
+  // Would implement actual delete here
+}
+
+/**
+ * Delete all objects with a given prefix
+ */
+export async function deletePrefix(prefix: string): Promise<void> {
+  const objects = await listObjects(prefix);
+  for (const key of objects) {
+    await deleteObject(key);
+  }
+}
+
+/**
+ * Clean up test storage
+ */
+export async function cleanupTestStorage(): Promise<void> {
+  if (!storageAvailable) return;
+
+  try {
+    // Delete all test objects
+    await deletePrefix('npm/');
+    await deletePrefix('oci/');
+    await deletePrefix('maven/');
+    await deletePrefix('cargo/');
+    await deletePrefix('pypi/');
+    await deletePrefix('composer/');
+    await deletePrefix('rubygems/');
+  } catch {
+    // Ignore errors
+  }
+}
+
+/**
+ * Check if storage is available
+ */
+export function isStorageAvailable(): boolean {
+  return storageAvailable;
+}