chore: import upstream snapshot with attribution

tests/unit/validation-search-embedding-split.test.ts

@@ -0,0 +1,36 @@
+// Characterization of the validation.ts search + embedding split (god-file decomposition): the
+// web-search validators (+ SEARCH_VALIDATOR_CONFIGS) moved into validation/searchProviders.ts and the
+// embedding/rerank/clarifai validators into validation/embeddingProviders.ts. Behavior-preserving
+// move — the lock is module surface; runtime behavior stays covered by the search-provider-validation
+// and provider-validation-specialty suites.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+
+const search = await import("../../src/lib/providers/validation/searchProviders.ts");
+const embed = await import("../../src/lib/providers/validation/embeddingProviders.ts");
+const HOST = await import("../../src/lib/providers/validation.ts");
+
+test("searchProviders exposes the search validators + the per-provider config map", () => {
+  assert.equal(typeof (search as Record<string, unknown>).validateSearchProvider, "function");
+  assert.equal("validateGenericProvider" in search, false);
+  const cfg = (search as Record<string, Record<string, unknown>>).SEARCH_VALIDATOR_CONFIGS;
+  assert.ok(cfg && typeof cfg === "object");
+  assert.ok(
+    Object.keys(cfg).length > 0,
+    "SEARCH_VALIDATOR_CONFIGS must carry the provider configs"
+  );
+});
+
+test("embeddingProviders exposes clarifai + embedding + rerank validators", () => {
+  for (const name of [
+    "validateClarifaiProvider",
+    "validateEmbeddingApiProvider",
+    "validateRerankApiProvider",
+  ]) {
+    assert.equal(typeof (embed 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");
+});