feat: stream hashing y entradas en archivos

- Añade `computeHashesFromStream` para hashing desde streams
- Añade `streamArchiveEntry` e integra en `importDirectory` (path codificado con ::)
- Extiende `scanDirectory` para exponer entradas internas, normaliza rutas POSIX y evita traversal; `ARCHIVE_MAX_ENTRIES` configurable
- Limpia listeners en hashing y mejora robustez/logging
- Añade tests unitarios e integración; actualiza mocks a `Mock` types
- CI: instala `unzip` junto a `p7zip` para soportar tests de integración

backend/tests/services/importService.spec.ts

@@ -1,4 +1,5 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
+import type { Mock } from 'vitest';
 
 vi.mock('../../src/services/fsScanner', () => ({
   scanDirectory: vi.fn(),
@@ -44,31 +45,30 @@ describe('services/importService', () => {
 
     const hashes = { size: 123, md5: 'md5-abc', sha1: 'sha1-abc', crc32: 'abcd' };
 
-    (scanDirectory as unknown as vi.Mock).mockResolvedValue(files);
-    (computeHashes as unknown as vi.Mock).mockResolvedValue(hashes);
+    (scanDirectory as unknown as Mock).mockResolvedValue(files);
+    (computeHashes as unknown as Mock).mockResolvedValue(hashes);
 
-    (prisma.game.findUnique as unknown as vi.Mock).mockResolvedValue(null);
-    (prisma.game.create as unknown as vi.Mock).mockResolvedValue({
+    (prisma.game.findUnique as unknown as Mock).mockResolvedValue(null);
+    (prisma.game.create as unknown as Mock).mockResolvedValue({
       id: 77,
       title: 'Sonic',
       slug: 'sonic',
     });
-    (prisma.romFile.upsert as unknown as vi.Mock).mockResolvedValue({ id: 1 });
+    (prisma.romFile.upsert as unknown as Mock).mockResolvedValue({ id: 1 });
 
     const summary = await importDirectory({ dir: '/roms', persist: true });
 
-    expect((scanDirectory as unknown as vi.Mock).mock.calls[0][0]).toBe('/roms');
-    expect((computeHashes as unknown as vi.Mock).mock.calls[0][0]).toBe('/roms/Sonic.bin');
+    expect((scanDirectory as unknown as Mock).mock.calls[0][0]).toBe('/roms');
+    expect((computeHashes as unknown as Mock).mock.calls[0][0]).toBe('/roms/Sonic.bin');
 
-    expect((prisma.game.findUnique as unknown as vi.Mock).mock.calls[0][0]).toEqual({
+    expect((prisma.game.findUnique as unknown as Mock).mock.calls[0][0]).toEqual({
       where: { slug: 'sonic' },
     });
-    expect((prisma.game.create as unknown as vi.Mock).mock.calls[0][0]).toEqual({
+    expect((prisma.game.create as unknown as Mock).mock.calls[0][0]).toEqual({
       data: { title: 'Sonic', slug: 'sonic' },
     });
-
-    expect((prisma.romFile.upsert as unknown as vi.Mock).mock.calls.length).toBe(1);
-    const upsertArgs = (prisma.romFile.upsert as unknown as vi.Mock).mock.calls[0][0];
+    expect((prisma.romFile.upsert as unknown as Mock).mock.calls.length).toBe(1);
+    const upsertArgs = (prisma.romFile.upsert as unknown as Mock).mock.calls[0][0];
     expect(upsertArgs.where).toEqual({ checksum: 'md5-abc' });
     expect(upsertArgs.create.gameId).toBe(77);
     expect(upsertArgs.create.filename).toBe('Sonic.bin');