fix(rules): correct the inspire courage bonus type and saves

PF1e CRB (Bardic Performance - Inspire Courage): the attack/weapon-damage
bonus is a COMPETENCE bonus (not morale), so it stacks with morale sources
like Heroism; the performance also grants a +1 MORALE bonus on saving throws
against charm and fear effects, implemented as two descriptor-conditional
will modifiers (fear / mind_affecting) that dedupe via morale stacking.
Simplifications (documented): flat +1 (no scaling per four bard levels) and
mind_affecting stands in for the missing charm descriptor.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/pf1e_simulator/combat.py

@@ -4454,7 +4454,18 @@ class CombatEngine:
     def _execute_inspire_courage(
         self, state: CombatantState, target: CombatantState | None
     ) -> None:
-        """Execute Inspire Courage (morale +1 attack/damage, 30ft radius, costs bardic_rounds)."""
+        """Execute Inspire Courage (30ft radius, costs bardic_rounds).
+
+        PF1e (CRB, Bardic Performance — Inspire Courage): +1 competence bonus
+        on attack rolls and weapon damage rolls, and a +1 morale bonus on
+        saving throws against charm and fear effects. Simplifications: the
+        scaling (+1 per four bard levels) is not modeled (flat +1), and the
+        engine has no "charm" descriptor, so mind_affecting stands in for it
+        (documented over-coverage: compulsion effects also count). The save
+        bonus is carried by two conditional modifiers (fear /
+        mind_affecting); a save with both descriptors still totals +1 because
+        morale does not stack with itself.
+        """
         if not state.spend_resource("bardic_rounds", 1):
             self._log(
                 f"round {self._current_round} {state.combatant.id}: inspire courage "
@@ -4481,13 +4492,21 @@ class CombatEngine:
             )
             return
 
-        # Apply +1 morale bonus to attack and damage
+        # Apply +1 competence attack/damage and +1 morale vs charm/fear saves
         for ally in affected:
             ally.active_buffs.append(
                 ActiveBuff(
                     modifiers=(
-                        StatModifier(target="attack", value=1, bonus_type="morale"),
-                        StatModifier(target="damage", value=1, bonus_type="morale"),
+                        StatModifier(target="attack", value=1, bonus_type="competence"),
+                        StatModifier(target="damage", value=1, bonus_type="competence"),
+                        StatModifier(
+                            target="will", value=1, bonus_type="morale",
+                            condition="fear",
+                        ),
+                        StatModifier(
+                            target="will", value=1, bonus_type="morale",
+                            condition="mind_affecting",
+                        ),
                     ),
                     rounds_left=1,
                     source=f"inspire courage by {state.combatant.id}",
@@ -4495,7 +4514,8 @@ class CombatEngine:
             )
         self._log(
             f"round {self._current_round} {state.combatant.id}: "
-            f"inspire courage +1 morale attack/damage to {len(affected)} allies"
+            f"inspire courage +1 competence attack/damage, +1 morale vs "
+            f"charm/fear saves to {len(affected)} allies"
         )
     def _execute_attack(
         self,