feat: add OpenRouter audit generation pipeline

tests/openrouter-provider.test.ts

@@ -0,0 +1,50 @@
+import { readFileSync } from "node:fs";
+import assert from "node:assert/strict";
+import { join } from "node:path";
+import test from "node:test";
+
+import { createOpenRouterProvider } from "../lib/ai/openrouter-provider";
+
+const providerSource = readFileSync(
+  join(process.cwd(), "lib", "ai", "openrouter-provider.ts"),
+  "utf8",
+);
+
+test("provider reads OPENROUTER_API_KEY from environment and requires it", () => {
+  assert.equal(
+    /OPENROUTER_API_KEY/.test(providerSource),
+    true,
+    "Provider should read OPENROUTER_API_KEY.",
+  );
+  assert.equal(
+    /OPENROUTER_APP_NAME/.test(providerSource),
+    true,
+    "Provider should include optional OPENROUTER_APP_NAME.",
+  );
+  assert.equal(
+    /OPENROUTER_APP_URL/.test(providerSource),
+    true,
+    "Provider should include optional OPENROUTER_APP_URL.",
+  );
+
+  assert.throws(
+    () =>
+      createOpenRouterProvider({
+        OPENROUTER_API_KEY: undefined,
+        OPENROUTER_APP_NAME: "local-audit-tool",
+        OPENROUTER_APP_URL: "https://example.local",
+      }),
+    /OPENROUTER_API_KEY is required/i,
+  );
+});
+
+test("provider forwards optional app metadata to createOpenRouter call", () => {
+  const provider = createOpenRouterProvider({
+    OPENROUTER_API_KEY: "dummy-key",
+    OPENROUTER_APP_NAME: "local-audit-tool",
+    OPENROUTER_APP_URL: "https://example.local",
+  });
+
+  assert.equal(typeof provider, "function");
+  assert.equal(provider !== null, true);
+});