add controller tests, move validation testing from e2e

revert unnecessary change

update mocks

add structured-headers to e2e deps

server/test/repositories/storage.repository.mock.ts

@@ -51,6 +51,7 @@ export const newStorageRepositoryMock = (): Mocked<RepositoryInterface<StorageRe
     readFile: vitest.fn(),
     createFile: vitest.fn(),
     createWriteStream: vitest.fn(),
+    createOrAppendWriteStream: vitest.fn(),
     createOrOverwriteFile: vitest.fn(),
     existsSync: vitest.fn(),
     overwriteFile: vitest.fn(),
@@ -58,6 +59,7 @@ export const newStorageRepositoryMock = (): Mocked<RepositoryInterface<StorageRe
     unlinkDir: vitest.fn().mockResolvedValue(true),
     removeEmptyDirs: vitest.fn(),
     checkFileExists: vitest.fn(),
+    mkdir: vitest.fn(),
     mkdirSync: vitest.fn(),
     checkDiskUsage: vitest.fn(),
     readdir: vitest.fn(),