fix(rules): pinned creatures cannot attack (definition corrected; apply-gap documented)

tests/test_maneuvers.py

@@ -698,15 +698,17 @@ def test_grappled_attacker_takes_minus2_on_trip_cmb() -> None:
     assert engine._transcript[-1].endswith("-> FAILED")
 
 
-def test_pinned_attacker_takes_minus2_on_trip_cmb() -> None:
-    # Same -2 applies to a pinned creature (SRD Conditions - Pinned).
+def test_pinned_attacker_cannot_attempt_maneuvers() -> None:
+    # SRD Conditions - Pinned: a pinned creature is tightly bound and can
+    # only attempt to escape — the trip is refused outright (cant_attack),
+    # so the -2 CMB never even rolls.
     a = make_state(make_combatant("a", attack_bonus=2), "players", (1, 1))
     b = make_state(make_combatant("b"), "monsters", (1, 2))
     _conditioned(a, "pinned")
     engine = make_engine([1, 10], [a, b])
     engine._execute_maneuver(a, b, "trip")
     assert not any(c.condition.name == "prone" for c in b.active_conditions)
-    assert engine._transcript[-1].endswith("-> FAILED")
+    assert "wait (cannot attack)" in engine._transcript[-1]
 
 
 def test_grappled_attacker_grapple_check_is_exempt() -> None: