Implement file hash-based library matching and remove fuzzy ASIN matching

Adds file hash-based matching for Audiobookshelf library items to ensure 100% accurate ASIN assignment for RMAB-organized content. Removes fuzzy matching from library availability checks, making all matching ASIN-only to eliminate false positives and race conditions. Updates database schema, processors, and matcher utilities; adds new tests and documentation for the new matching strategy. Removes obsolete scripts, Dockerfile, and related tests; updates docker-compose for test environments.

tests/api/admin-settings-prowlarr-indexers.routes.test.ts

@@ -40,7 +40,7 @@ describe('Admin Prowlarr indexers route', () => {
 
   it('returns indexers with saved config', async () => {
     prowlarrMock.getIndexers.mockResolvedValueOnce([{ id: 1, name: 'Indexer', protocol: 'torrent' }]);
-    configServiceMock.get.mockResolvedValueOnce(JSON.stringify([{ id: 1, name: 'Indexer', priority: 5, seedingTimeMinutes: 10 }]));
+    configServiceMock.get.mockResolvedValueOnce(JSON.stringify([{ id: 1, name: 'Indexer', protocol: 'torrent', priority: 5, seedingTimeMinutes: 10 }]));
     configServiceMock.get.mockResolvedValueOnce('[]');
 
     const { GET } = await import('@/app/api/admin/settings/prowlarr/indexers/route');
@@ -53,7 +53,7 @@ describe('Admin Prowlarr indexers route', () => {
 
   it('saves indexer configuration', async () => {
     authRequest.json.mockResolvedValue({
-      indexers: [{ id: 1, name: 'Indexer', enabled: true, priority: 10, seedingTimeMinutes: 0 }],
+      indexers: [{ id: 1, name: 'Indexer', protocol: 'torrent', enabled: true, priority: 10, seedingTimeMinutes: 0 }],
       flagConfigs: [],
     });
 

tests/api/audiobooks-search.routes.test.ts

@@ -64,7 +64,7 @@ describe('Audiobooks search torrents route', () => {
   it('returns ranked results with rank order', async () => {
     authRequest.json.mockResolvedValue({ title: 'Title', author: 'Author' });
     configServiceMock.get
-      .mockResolvedValueOnce(JSON.stringify([{ id: 1, name: 'Indexer', priority: 10 }]))
+      .mockResolvedValueOnce(JSON.stringify([{ id: 1, name: 'Indexer', protocol: 'torrent', priority: 10 }]))
       .mockResolvedValueOnce(null);
 
     groupIndexersMock.mockReturnValue([{ categories: [1], indexerIds: [1] }]);

tests/api/auth-misc.routes.test.ts

@@ -159,6 +159,48 @@ describe('Auth misc routes', () => {
     expect(payload.registrationEnabled).toBe(true);
     expect(payload.oidcProviderName).toBe('MyOIDC');
   });
+
+  it('shows local provider when registration is enabled even without existing users', async () => {
+    configServiceMock.get
+      .mockResolvedValueOnce('audiobookshelf') // backend mode
+      .mockResolvedValueOnce(null) // indexer type
+      .mockResolvedValueOnce(null) // prowlarr url
+      .mockResolvedValueOnce('false') // oidc enabled
+      .mockResolvedValueOnce('true') // registration enabled
+      .mockResolvedValueOnce('SSO'); // oidc provider name
+
+    prismaMock.user.count.mockResolvedValueOnce(0); // No local users exist
+
+    const { GET } = await import('@/app/api/auth/providers/route');
+    const response = await GET();
+    const payload = await response.json();
+
+    expect(payload.backendMode).toBe('audiobookshelf');
+    expect(payload.providers).toContain('local'); // Should include 'local' for registration
+    expect(payload.registrationEnabled).toBe(true);
+    expect(payload.hasLocalUsers).toBe(false);
+  });
+
+  it('does not show local provider when registration is disabled and no users exist', async () => {
+    configServiceMock.get
+      .mockResolvedValueOnce('audiobookshelf') // backend mode
+      .mockResolvedValueOnce(null) // indexer type
+      .mockResolvedValueOnce(null) // prowlarr url
+      .mockResolvedValueOnce('false') // oidc enabled
+      .mockResolvedValueOnce('false') // registration disabled
+      .mockResolvedValueOnce('SSO'); // oidc provider name
+
+    prismaMock.user.count.mockResolvedValueOnce(0); // No local users exist
+
+    const { GET } = await import('@/app/api/auth/providers/route');
+    const response = await GET();
+    const payload = await response.json();
+
+    expect(payload.backendMode).toBe('audiobookshelf');
+    expect(payload.providers).not.toContain('local'); // Should NOT include 'local'
+    expect(payload.registrationEnabled).toBe(false);
+    expect(payload.hasLocalUsers).toBe(false);
+  });
 });