fix(tests): reduce timeout flakes in linux-sandbox and tui

code-rs/linux-sandbox/tests/suite/landlock.rs

@@ -19,7 +19,7 @@ const SHORT_TIMEOUT_MS: u64 = 200;
 const SHORT_TIMEOUT_MS: u64 = 5_000;
 
 #[cfg(not(target_arch = "aarch64"))]
-const LONG_TIMEOUT_MS: u64 = 1_000;
+const LONG_TIMEOUT_MS: u64 = 2_000;
 #[cfg(target_arch = "aarch64")]
 const LONG_TIMEOUT_MS: u64 = 5_000;
 

code-rs/tui/tests/stuck_exec.rs

@@ -668,12 +668,18 @@ fn queued_exec_end_flushes_after_stream_clears() {
     harness.force_stream_clear();
 
     // Give the flush timers enough headroom under nextest parallelism.
-    std::thread::sleep(Duration::from_millis(400));
-    harness.flush_into_widget();
-    std::thread::sleep(Duration::from_millis(200));
-    harness.flush_into_widget();
-
-    let output = render_chat_widget_to_vt100(&mut harness, 80, 14);
+    let deadline = Instant::now() + Duration::from_secs(2);
+    let output = loop {
+        std::thread::sleep(Duration::from_millis(100));
+        harness.flush_into_widget();
+        let output = render_chat_widget_to_vt100(&mut harness, 80, 14);
+        if output.contains("queued") && !output.contains("Running...") {
+            break output;
+        }
+        if Instant::now() >= deadline {
+            break output;
+        }
+    };
     assert!(
         output.contains("queued"),
         "exec output should render after the deferred end is delivered:\n{}",