test(gate): the loud-probe assertion was reading the weather, not the table

It asked plan(audio=True) and then asserted a property of the probe table. The
loud probe needs=('scsynth',), so the test passed with the rig up and failed
with it down -- a verdict that depends on the box is the one thing a gate's own
suite may not have. force=True asks the table the question the docstring says
it is asking.

tools/tests/test_check_gig.py

@@ -124,7 +124,12 @@ def test_the_loud_probe_is_never_in_a_default_run():
     """--audio makes sound for ~45s a track. A gate run backstage must not."""
     default = [p for p, skip in CG.plan() if skip is None]
     assert not any(p.loud for p in default)
-    with_audio = [p for p, skip in CG.plan(audio=True) if skip is None]
+    # `force=True` because the claim is about the TABLE, not about the box this
+    # runs on. The loud probe `needs=("scsynth",)`, so asking plan() plainly
+    # made this assertion pass with the rig up and FAIL with it down — a test
+    # whose verdict depends on the weather, which is the one thing a gate's own
+    # suite may not be (caught on a cold box, 2026-09-22).
+    with_audio = [p for p, skip in CG.plan(audio=True, force=True) if skip is None]
     assert any(p.loud for p in with_audio)