diff --git a/GhosttyTabsUITests/JumpToUnreadUITests.swift b/GhosttyTabsUITests/JumpToUnreadUITests.swift
new file mode 100644
index 00000000..a55f4afa
--- /dev/null
+++ b/GhosttyTabsUITests/JumpToUnreadUITests.swift
@@ -0,0 +1,72 @@
+import XCTest
+import Foundation
+
+final class JumpToUnreadUITests: XCTestCase {
+    private var dataPath = ""
+
+    override func setUp() {
+        super.setUp()
+        continueAfterFailure = false
+        dataPath = "/tmp/cmux-ui-test-jump-unread-\(UUID().uuidString).json"
+        try? FileManager.default.removeItem(atPath: dataPath)
+    }
+
+    func testJumpToUnreadFocusesPanelAcrossTabs() {
+        let app = XCUIApplication()
+        app.launchEnvironment["CMUX_UI_TEST_JUMP_UNREAD_SETUP"] = "1"
+        app.launchEnvironment["CMUX_UI_TEST_JUMP_UNREAD_PATH"] = dataPath
+        app.launch()
+        app.activate()
+
+        XCTAssertTrue(
+            waitForJumpUnreadData(keys: ["expectedTabId", "expectedSurfaceId"], timeout: 6.0),
+            "Expected test setup data to be written"
+        )
+
+        guard let setupData = loadJumpUnreadData() else {
+            XCTFail("Missing test setup data")
+            return
+        }
+
+        let expectedTabId = setupData["expectedTabId"]
+        let expectedSurfaceId = setupData["expectedSurfaceId"]
+        XCTAssertNotNil(expectedTabId)
+        XCTAssertNotNil(expectedSurfaceId)
+
+        app.typeKey("u", modifierFlags: [.command, .shift])
+
+        XCTAssertTrue(
+            waitForJumpUnreadData(keys: ["focusedTabId", "focusedSurfaceId"], timeout: 6.0),
+            "Expected jump-to-unread focus to be recorded"
+        )
+
+        guard let focusedData = loadJumpUnreadData() else {
+            XCTFail("Missing jump-to-unread focus data")
+            return
+        }
+
+        XCTAssertEqual(focusedData["focusedTabId"], expectedTabId)
+        XCTAssertEqual(focusedData["focusedSurfaceId"], expectedSurfaceId)
+    }
+
+    private func waitForJumpUnreadData(keys: [String], timeout: TimeInterval) -> Bool {
+        let deadline = Date().addingTimeInterval(timeout)
+        while Date() < deadline {
+            if let data = loadJumpUnreadData(), keys.allSatisfy({ data[$0] != nil }) {
+                return true
+            }
+            RunLoop.current.run(until: Date().addingTimeInterval(0.05))
+        }
+        if let data = loadJumpUnreadData(), keys.allSatisfy({ data[$0] != nil }) {
+            return true
+        }
+        return false
+    }
+
+    private func loadJumpUnreadData() -> [String: String]? {
+        guard let data = try? Data(contentsOf: URL(fileURLWithPath: dataPath)) else {
+            return nil
+        }
+        return (try? JSONSerialization.jsonObject(with: data)) as? [String: String]
+    }
+}