feat(koreader): hide audiobook-only books from the KOReader plugin

Add a per-login setting, on by default, that leaves books whose content files are all audio out
of the plugin catalog, its counts and bulk downloads, and drops a library holding nothing else.
The plugin detail page also names the first file the device can open as the main file.

Closes #1345

scripts/e2e/suite-registry.mjs

@@ -856,6 +856,28 @@ export const E2E_SUITES = Object.freeze({
       ...SHARED_DB_AND_HELPER_PATHS,
     ],
   },
+  "koreader-audio-only-catalog": {
+    id: "koreader-audio-only-catalog",
+    name: "KOReader Audiobook-Only Catalog",
+    timeout: 20,
+    lane: "full",
+    description: "KOReader catalog setting that hides books whose only content files are audio",
+    vitestTarget: "test/koreader-audio-only-catalog.e2e-spec.ts",
+    junitOutput: `${TEST_RESULTS_DIR}/koreader-audio-only-catalog-e2e-junit.xml`,
+    prepareDedicatedDatabase: true,
+    useDedicatedDatabase: true,
+    changedPaths: [
+      "server/src/modules/koreader/**",
+      "server/src/modules/opds/**",
+      "server/src/modules/dashboard/dashboard.repository.ts",
+      "server/src/modules/dashboard/dashboard.service.ts",
+      "server/src/modules/smart-scope/smart-scope.service.ts",
+      "server/src/common/utils/audio-only-book-sql.utils.ts",
+      "server/test/koreader-audio-only-catalog.e2e-spec.ts",
+      "server/test/e2e/reader-state-isolation/**",
+      ...SHARED_DB_AND_HELPER_PATHS,
+    ],
+  },
   "koreader-page-stats": {
     id: "koreader-page-stats",
     name: "KOReader Page Stats Derivation",