Fix #1035: refresh extension tab metadata

Handle Target.targetInfoChanged in extension relay so /json/list reflects updated title/url after navigation. Adds regression coverage.

src/browser/extension-relay.test.ts

@@ -152,9 +152,35 @@ describe("chrome extension relay server", () => {
     const list = (await fetch(`${cdpUrl}/json/list`).then((r) => r.json())) as Array<{
       id?: string;
       url?: string;
+      title?: string;
     }>;
     expect(list.some((t) => t.id === "t1" && t.url === "https://example.com")).toBe(true);
 
+    // Simulate navigation updating tab metadata.
+    ext.send(
+      JSON.stringify({
+        method: "forwardCDPEvent",
+        params: {
+          method: "Target.targetInfoChanged",
+          params: {
+            targetInfo: {
+              targetId: "t1",
+              type: "page",
+              title: "DER STANDARD",
+              url: "https://www.derstandard.at/",
+            },
+          },
+        },
+      }),
+    );
+
+    const list2 = (await fetch(`${cdpUrl}/json/list`).then((r) => r.json())) as Array<{
+      id?: string;
+      url?: string;
+      title?: string;
+    }>;
+    expect(list2.some((t) => t.id === "t1" && t.url === "https://www.derstandard.at/" && t.title === "DER STANDARD")).toBe(true);
+
     const cdp = new WebSocket(`ws://127.0.0.1:${port}/cdp`);
     await waitForOpen(cdp);
     const q = createMessageQueue(cdp);

src/browser/extension-relay.ts

@@ -497,6 +497,23 @@ export async function ensureChromeExtensionRelayServer(opts: {
           return;
         }
 
+        // Keep cached tab metadata fresh for /json/list.
+        // After navigation, Chrome updates URL/title via Target.targetInfoChanged.
+        if (method === "Target.targetInfoChanged") {
+          const changed = (params ?? {}) as { targetInfo?: { targetId?: string; type?: string } };
+          const targetInfo = changed?.targetInfo;
+          const targetId = targetInfo?.targetId;
+          if (targetId && (targetInfo?.type ?? "page") === "page") {
+            for (const [sid, target] of connectedTargets) {
+              if (target.targetId !== targetId) continue;
+              connectedTargets.set(sid, {
+                ...target,
+                targetInfo: { ...target.targetInfo, ...(targetInfo as object) },
+              });
+            }
+          }
+        }
+
         broadcastToCdpClients({ method, params, sessionId });
       }
     });