diff --git a/tests/hermes_cli/test_reasoning_effort_menu.py b/tests/hermes_cli/test_reasoning_effort_menu.py
index cab202a2ec..82dceedd9e 100644
--- a/tests/hermes_cli/test_reasoning_effort_menu.py
+++ b/tests/hermes_cli/test_reasoning_effort_menu.py
@@ -37,7 +37,7 @@ def test_current_reasoning_effort_reads_dict_form():
 def test_hermes_model_offers_reasoning_whenever_a_pick_is_saved(tmp_path, monkeypatch):
     """Same model ID on a new provider, or a re-pick of the current model, still gets the effort
     step (like chat /model); a flow that saves nothing does not."""
-    import hermes_cli.main as main
+    from hermes_cli import main
     from hermes_cli.auth import _save_model_choice
     from hermes_cli.config import load_config, save_config
 
diff --git a/tests/scripts/install/test_install_ps1_native_calls.py b/tests/scripts/install/test_install_ps1_native_calls.py
index 346771b083..cb34252b77 100644
--- a/tests/scripts/install/test_install_ps1_native_calls.py
+++ b/tests/scripts/install/test_install_ps1_native_calls.py
@@ -133,7 +133,7 @@ def test_pinned_fresh_clone_never_materializes_the_branch_tip(tmp_path):
 def test_pinned_fresh_clone_publishes_nothing_when_the_pin_is_refused(tmp_path):
     origin, _, off_branch = _pin_fixture(tmp_path)
     home = tmp_path / "home"
-    result, frame = _stage(origin, home, "-Commit", off_branch)
+    _, frame = _stage(origin, home, "-Commit", off_branch)
     assert frame["ok"] is False
     assert "is not on branch main" in frame["reason"]
     assert not (home / "hermes-agent").exists()
diff --git a/tests/scripts/test_run_tests_parallel.py b/tests/scripts/test_run_tests_parallel.py
index c722780226..a1d9c1bf19 100644
--- a/tests/scripts/test_run_tests_parallel.py
+++ b/tests/scripts/test_run_tests_parallel.py
@@ -262,7 +262,7 @@ def test_detached_grandchild_is_killed_by_runner(tmp_path: Path) -> None:
         [sys.executable, str(repo_root / "scripts" / "run_tests_parallel.py"),
          "--paths", str(probe_dir), "-j", "1", "--file-timeout", "30"],
         cwd=probe_dir, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
-        encoding="utf-8", errors="replace", timeout=60,
+        encoding="utf-8", errors="replace", timeout=60, check=False,
     )
     pid = json.loads(handoff.read_text(encoding="utf-8-sig"))["pid"]
     deadline = time.monotonic() + 5.0
diff --git a/tests/tools/test_browser_supervisor_capture_dispatch.py b/tests/tools/test_browser_supervisor_capture_dispatch.py
index 4ebaf63802..2180bdfc31 100644
--- a/tests/tools/test_browser_supervisor_capture_dispatch.py
+++ b/tests/tools/test_browser_supervisor_capture_dispatch.py
@@ -39,7 +39,7 @@ def pair():
 
 
 def test_unbounded_reply_retains_late_attachment_for_consumer_cleanup(pair):
-    server, registry, sup, handle = pair
+    server, _registry, _sup, handle = pair
     abandoned = threading.Event()
     outcomes = []
     def worker():
@@ -58,7 +58,7 @@ def test_unbounded_reply_retains_late_attachment_for_consumer_cleanup(pair):
 
 
 def test_dispatch_deadline_refuses_queued_command_after_timeout(pair):
-    server, registry, sup, handle = pair
+    server, _registry, sup, handle = pair
     entered = threading.Event()
     def block():
         # Stall the loop past the caller's deadline but inside its +1s result grace.
@@ -73,7 +73,7 @@ def test_dispatch_deadline_refuses_queued_command_after_timeout(pair):
 
 
 def test_before_send_checks_cancellation_on_supervisor_loop(pair):
-    server, registry, sup, handle = pair
+    server, _registry, sup, handle = pair
     entered, release, abandoned = threading.Event(), threading.Event(), threading.Event()
     failures = []
     def block():
@@ -100,7 +100,7 @@ def test_before_send_checks_cancellation_on_supervisor_loop(pair):
 
 
 def test_unbounded_reply_fails_promptly_on_socket_close(pair):
-    server, registry, sup, handle = pair
+    server, _registry, _sup, handle = pair
     failures = []
     # This fixture replies to ordinary methods; block the connection handler on attach instead.
     def attach():
@@ -119,8 +119,8 @@ def test_unbounded_reply_fails_promptly_on_socket_close(pair):
 
 
 def test_unbounded_wait_ends_when_loop_closes_with_dispatch_queued(pair, monkeypatch):
-    server, registry, sup, handle = pair
-    import agent.async_utils as async_utils
+    _server, registry, _sup, handle = pair
+    from agent import async_utils
     # A stop racing call() can close the loop before its queued dispatch runs; the
     # scheduled future then never resolves.
     real = async_utils.safe_schedule_threadsafe