forgetest: every machine action a test takes is declared

The queues route a test by its kind and its declared actions: an auto
test runs unattended with or without the bench fixture, and an operator
test whose actions the fixture covers runs unattended only while it
does. exthost.events opens and closes the lid through Context.act but
was declared auto with no actions, so the unattended queue ran it with
no fixture on the network, and it waited 180 s for a person who was not
there: the fx29 campaign (image 20261010213702) ended on "lid open was
not seen on the machine within 180 s" with forgefixture.local silent to
mDNS and 172.16.1.171 silent to ping.

- exthost.events: operator, actions lid, with the operator's steps.
- events.button-telemetry: the same defect with the button; operator,
  actions button, with the operator's steps.
- setup.check-switches: declares interlock beside lid and button; the
  check works the interlock loop on a Pro.

test_fixture's new CatalogTests case reads every catalog test's source
and fails a test that calls Context.act on a channel it does not
declare, or that is auto and calls it at all. It found these three and
no other.

Fingerprints: the three decorators are each test's own text, so these
three move and no other (diffed across the change, 128 tests).

Proof: the whole host suite passes (509 tests) and pyflakes finds no
undefined name. RoutingTests already prove the routing these
declarations feed: an operator test the fixture covers moves to the
unattended queue, one it does not stays attended, and with no fixture
the routing is the old one.

Acceptance: the change is the three tests' declarations; with the
fixture up each runs unattended through it as before, and with the
fixture down each stays in the attended list instead of stranding the
unattended queue.

forgetest/tests/test_fixture.py

@@ -314,6 +314,24 @@ class CatalogTests(unittest.TestCase):
         with self.assertRaises(ValueError):
             catalog.test("z.auto", title="t", subsystem="z", hands=("app",))(lambda ctx: None)
 
+    def test_every_action_a_test_takes_is_declared(self):
+        # The queues route a test by its kind and its actions: an auto test
+        # runs unattended with or without a fixture, and an operator test
+        # whose actions the fixture covers runs unattended only while it
+        # does. A test that acts on the lid, the interlock or the button
+        # without saying so runs unattended with no fixture and waits for a
+        # person who is not there.
+        import inspect
+        import re
+        from forgetest import catalog
+        bad = []
+        for t in catalog.all_tests(catalog.load_suite()):
+            src = inspect.getsource(t.fn)
+            taken = set(re.findall(r'ctx\.act\(\s*"(\w+)"', src))
+            if taken and (t.kind == "auto" or not taken <= set(t.actions)):
+                bad.append("%s (%s) acts on %s, declares %s" % (t.id, t.kind, sorted(taken), list(t.actions)))
+        self.assertEqual(bad, [])
+
 
 class StubFixture:
     """What the runner needs of a fixture, scripted."""