feat(combat): add repair_weapon action to fix broken weapons

src/pf1e_simulator/combat.py

@@ -358,7 +358,7 @@ class Action:
         "attack", "move", "wait", "swift", "free", "immediate", "full_round",
         "full_attack", "charge", "withdraw", "5foot_step", "cast_spell",
         "maneuver", "channel_energy", "hex", "deed", "spell_combat",
-        "inspire_courage", "retrieve_weapon",
+        "inspire_courage", "retrieve_weapon", "repair_weapon",
     ]
     target_id: str | None = None
     spell_name: str | None = None
@@ -1478,6 +1478,8 @@ class CombatEngine:
             )
         elif kind == "retrieve_weapon":
             self._retrieve_weapon(state, action.weapon_id)
+        elif kind == "repair_weapon":
+            self._repair_weapon(state, action.weapon_id)
         elif kind in ("channel_energy", "hex", "deed", "spell_combat", "inspire_courage"):
             self._execute_class_ability(state, target, action)
         elif kind == "charge":
@@ -1648,6 +1650,37 @@ class CombatEngine:
             f"retrieve {weapon_id} (restored)"
         )
 
+    def _repair_weapon(self, state: CombatantState, weapon_id: str | None) -> None:
+        """Repair a broken weapon: remove it from ``weapon_broken`` and reset damage.
+
+        No-op (with a log line) when ``weapon_id`` is None or the weapon was never
+        damaged. Also removes the transient ``disarmed`` condition originating
+        from the sunder that broke the weapon, so the repaired weapon is fully
+        usable again.
+        """
+        if weapon_id is None:
+            self._log(
+                f"round {self._current_round} {state.combatant.id}: "
+                f"repair: nothing to repair"
+            )
+            return
+        if weapon_id not in state.weapon_damage:
+            self._log(
+                f"round {self._current_round} {state.combatant.id}: "
+                f"repair {weapon_id}: nothing to repair"
+            )
+            return
+        state.weapon_damage.pop(weapon_id, None)
+        state.weapon_broken.discard(weapon_id)
+        state.active_conditions = [
+            c for c in state.active_conditions
+            if not (c.condition.name == "disarmed" and c.source == "maneuver: sunder")
+        ]
+        self._log(
+            f"round {self._current_round} {state.combatant.id}: "
+            f"repair {weapon_id} (restored)"
+        )
+
     def _maneuver_cmb(self, state: CombatantState) -> int:
         return (
             state.combatant.cmb