chore: import upstream snapshot with attribution

tests/unit/validation-audio-misc-split.test.ts

@@ -0,0 +1,34 @@
+// Characterization of the validation.ts audio/misc split (god-file decomposition): the audio/speech +
+// miscellaneous API-key validators (deepgram, assemblyai, elevenlabs, inworld, kie, aws-polly,
+// bailian, reka, maritalk, nlpcloud, runwayml, nous-research, poe) moved into
+// validation/audioMiscProviders.ts. Behavior-preserving move — the lock here is module surface; the
+// runtime behavior stays covered by the provider-validation-specialty / branches suites.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+
+const M = await import("../../src/lib/providers/validation/audioMiscProviders.ts");
+const HOST = await import("../../src/lib/providers/validation.ts");
+
+test("audioMiscProviders exposes its thirteen validators", () => {
+  for (const name of [
+    "validateDeepgramProvider",
+    "validateAssemblyAIProvider",
+    "validateElevenLabsProvider",
+    "validateInworldProvider",
+    "validateKieProvider",
+    "validateAwsPollyProvider",
+    "validateBailianCodingPlanProvider",
+    "validateRekaProvider",
+    "validateMaritalkProvider",
+    "validateNlpCloudProvider",
+    "validateRunwayProvider",
+    "validateNousResearchProvider",
+    "validatePoeProvider",
+  ]) {
+    assert.equal(typeof (M as Record<string, unknown>)[name], "function", `missing ${name}`);
+  }
+});
+
+test("host dispatcher surface stays intact after the move", () => {
+  assert.equal(typeof (HOST as Record<string, unknown>).validateProviderApiKey, "function");
+});