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

src/pf1e_simulator/conditions.py

@@ -266,6 +266,12 @@ GRAPPLED = Condition(
 
 
 # Pinned: -4 Dex, -2 attack, no movement, can't cast, -4 AC vs melee (CRB)
+# SRD "Conditions—Pinned": a pinned creature is tightly bound and can only
+# attempt to escape (verbal/mental actions + the escape check) — it cannot
+# attack, so cant_attack applies (the engine's move-only filter then blocks
+# attacks, maneuvers and casts). Documented gap: the engine never APPLIES
+# pinned (no grapple-maintain loop), so this definition is exercised only
+# when the condition is injected directly.
 PINNED = Condition(
     name="pinned",
     modifiers=(
@@ -276,6 +282,7 @@ PINNED = Condition(
     ),
     cant_move=True,
     cant_charge=True,
+    cant_attack=True,
     cant_aoo=True,
     denies_dex_to_ac=True,
 )