diff --git a/benchmarks/aft-search/slice-descriptors/land-flake-batch-39.json b/benchmarks/aft-search/slice-descriptors/land-flake-batch-39.json
new file mode 100644
index 000000000..6d3dae3ca
--- /dev/null
+++ b/benchmarks/aft-search/slice-descriptors/land-flake-batch-39.json
@@ -0,0 +1,9 @@
+{
+  "slice_class": "engine_unwired",
+  "targeted_mechanism": "none",
+  "kind": "harness",
+  "fixtures": [
+    "crates/aft/tests/integration/tool_call_parity_test.rs"
+  ],
+  "note": "Test-only: commands/semantic_search/mod.rs changes only the poll deadline of a #[cfg(test)] helper (poll_for_backend_verdict, 5 s to 30 s). No search code path, ranking input or reply changes, so ranked rows must remain byte-identical."
+}
diff --git a/crates/aft/src/commands/semantic_search/mod.rs b/crates/aft/src/commands/semantic_search/mod.rs
index aaf9e061f..3ed3b0fc6 100644
--- a/crates/aft/src/commands/semantic_search/mod.rs
+++ b/crates/aft/src/commands/semantic_search/mod.rs
@@ -11878,14 +11878,16 @@ mod tests {
     }
 
     /// The backend probe answers on its own thread, so a test repeats the
-    /// request until the verdict arrives (a refused local connect takes
-    /// milliseconds) and returns the first reply that carries it, or the last
-    /// reply after a few seconds so the caller's assertion shows what it got.
+    /// request until the verdict arrives and returns the first reply that
+    /// carries it, or the last reply once the deadline passes so the caller's
+    /// assertion shows what it got. A refused local connect takes milliseconds
+    /// on Linux and macOS but can take seconds on a loaded Windows runner, so
+    /// the deadline is generous.
     fn poll_for_backend_verdict(
         mut request: impl FnMut() -> serde_json::Value,
         arrived: impl Fn(&serde_json::Value) -> bool,
     ) -> serde_json::Value {
-        let deadline = std::time::Instant::now() + Duration::from_secs(5);
+        let deadline = std::time::Instant::now() + Duration::from_secs(30);
         loop {
             let reply = request();
             if arrived(&reply) || std::time::Instant::now() >= deadline {
diff --git a/crates/aft/src/logging.rs b/crates/aft/src/logging.rs
index 8dfa880e1..36ec662a8 100644
--- a/crates/aft/src/logging.rs
+++ b/crates/aft/src/logging.rs
@@ -2882,7 +2882,11 @@ mod tests {
                 let caller = thread::spawn(move || {
                     let _ = done.send(write_terminal_log_sync("held-terminal-stderr-probe"));
                 });
-                let result = completed.recv_timeout(Duration::from_secs(1));
+                // stderr stays held until after this wait, so a write that
+                // waited on it would time out here; the budget is generous
+                // because a loaded Windows runner can take over a second to
+                // persist the line.
+                let result = completed.recv_timeout(Duration::from_secs(30));
                 let _ = release.send(());
                 holder.join().unwrap();
                 caller.join().unwrap();
diff --git a/crates/aft/src/subc/consent_speech_end_tests.rs b/crates/aft/src/subc/consent_speech_end_tests.rs
index 4f62fb2b5..12faf073b 100644
--- a/crates/aft/src/subc/consent_speech_end_tests.rs
+++ b/crates/aft/src/subc/consent_speech_end_tests.rs
@@ -63,7 +63,9 @@ impl ScopeEndControl {
     }
 
     async fn next(&mut self) -> WriterFrame {
-        let frame = tokio::time::timeout(Duration::from_secs(10), self.frames.recv())
+        // A frame the program never sends still fails; the generous wait only
+        // absorbs a loaded macOS runner, which missed a 10 s budget.
+        let frame = tokio::time::timeout(Duration::from_secs(30), self.frames.recv())
             .await
             .unwrap()
             .unwrap();
diff --git a/crates/aft/src/subc/mod.rs b/crates/aft/src/subc/mod.rs
index 41d4348cc..dcb48d613 100644
--- a/crates/aft/src/subc/mod.rs
+++ b/crates/aft/src/subc/mod.rs
@@ -22898,7 +22898,11 @@ mod tests {
     }
 
     fn assert_read_works_during_database_open(executor: &Arc<Executor>, fixture: &ConfiguredRoot) {
-        let body = database_wire_tool(executor, fixture, "read", Duration::from_secs(1));
+        // A read waiting on a blocked or failed database open would never
+        // finish, whatever its deadline; the generous deadline only absorbs
+        // slow admission on a loaded Windows runner, which at 1 s refused the
+        // read before it ran.
+        let body = database_wire_tool(executor, fixture, "read", Duration::from_secs(30));
         assert_eq!(body["success"], true, "{body}");
         assert!(body.to_string().contains("function_0"), "{body}");
         for name in [
diff --git a/crates/aft/tests/integration/github_read_restriction_responsiveness.rs b/crates/aft/tests/integration/github_read_restriction_responsiveness.rs
index e4cabff32..da03ff523 100644
--- a/crates/aft/tests/integration/github_read_restriction_responsiveness.rs
+++ b/crates/aft/tests/integration/github_read_restriction_responsiveness.rs
@@ -502,7 +502,10 @@ fn complete_deferred(start: GithubReadStart) -> GithubReadCompletion {
     let GithubReadStart::Deferred(deferred) = start else {
         panic!("network-bound GitHub read must return a deferred response");
     };
-    let deadline = Instant::now() + Duration::from_secs(1);
+    // A positive wait: the fixture read completes on a worker thread, which a
+    // loaded CI runner can schedule late. What this file checks is that the
+    // read is deferred at all (the panic above), not how fast it finishes.
+    let deadline = Instant::now() + Duration::from_secs(30);
     loop {
         if let Some(result) = deferred.try_complete() {
             return result.expect("fixture GitHub read completes");