Fix slower Zillow unit photo discovery path

skills/property-assessor/tests/timeout-guards.test.ts

@@ -20,6 +20,71 @@ test("discoverListingSources times out stalled Zillow and HAR discovery calls",
   assert.match(result.attempts.join(" "), /har discovery timed out/i);
 });
 
+test("discoverListingSources starts Zillow and HAR discovery in parallel", async () => {
+  let zillowStarted = false;
+  let harStarted = false;
+
+  const discoveryPromise = discoverListingSources("1011 Ennis Joslin Rd APT 235, Corpus Christi, TX 78412", {
+    timeoutMs: 100,
+    discoverZillowListingFn: async () => {
+      zillowStarted = true;
+      await new Promise((resolve) => setTimeout(resolve, 50));
+      return {
+        source: "zillow",
+        address: "1011 Ennis Joslin Rd APT 235, Corpus Christi, TX 78412",
+        searchUrl: "https://www.zillow.com/example-search",
+        finalUrl: "https://www.zillow.com/example-search",
+        title: "Example Zillow Search",
+        listingUrl: null,
+        attempts: ["Zillow did not find a confident match."]
+      };
+    },
+    discoverHarListingFn: async () => {
+      harStarted = true;
+      return {
+        source: "har",
+        address: "1011 Ennis Joslin Rd APT 235, Corpus Christi, TX 78412",
+        searchUrl: "https://www.har.com/example-search",
+        finalUrl: "https://www.har.com/example-search",
+        title: "Example HAR Search",
+        listingUrl: "https://www.har.com/homedetail/example/123",
+        attempts: ["HAR found a matching listing quickly."]
+      };
+    }
+  });
+
+  await new Promise((resolve) => setTimeout(resolve, 10));
+
+  assert.equal(zillowStarted, true);
+  assert.equal(harStarted, true);
+
+  const result = await discoveryPromise;
+  assert.equal(result.harUrl, "https://www.har.com/homedetail/example/123");
+});
+
+test("extractPhotoData honors a longer Zillow timeout override", async () => {
+  const result = await extractPhotoData("zillow", "https://www.zillow.com/example", {
+    timeoutMs: 20,
+    zillowTimeoutMs: 80,
+    extractZillowPhotosFn: async () => {
+      await new Promise((resolve) => setTimeout(resolve, 40));
+      return {
+        source: "zillow",
+        requestedUrl: "https://www.zillow.com/example",
+        finalUrl: "https://www.zillow.com/example",
+        expectedPhotoCount: 1,
+        complete: true,
+        photoCount: 1,
+        imageUrls: ["https://photos.example/1.jpg"],
+        notes: ["Zillow extractor succeeded after a slow page load."]
+      };
+    }
+  });
+
+  assert.equal(result.source, "zillow");
+  assert.equal(result.photoCount, 1);
+});
+
 test("extractPhotoData times out a stalled photo extraction instead of hanging forever", async () => {
   await assert.rejects(
     async () =>