docs: record combat, wolves, factions, and tribe war systems

docs/ECONOMIC_EVENTS.md

@@ -13,6 +13,12 @@ item_consumed
 animal_fed
 villager_weak
 home_damaged
+combatant_hurt
+combatant_killed
+raid_started
+war_resolved
+war_aborted
+wolf_hunt
 ```
 
 Each record contains a monotonically increasing event ID, event type,
@@ -42,6 +48,13 @@ marks a starving, low-energy villager who cannot feed themselves from an empty
 pantry, and `home_damaged` marks a villager who slept through critically low
 safety. Both are knowable by their actor and nearby witnesses.
 
+Conflict facts are narrative events emitted by `ConflictSystem`: `combatant_hurt`
+and `combatant_killed` carry the combatant ID as the source and the actor's NPC
+ID (or a hostile sentinel) as the actor; `raid_started`, `war_resolved`, and
+`war_aborted` narrate the tribe conflict lifecycle; `wolf_hunt` marks a wolf
+attack. These are objective history but intentionally not knowable facts, so
+they never gate NPC memory or relationships directly.
+
 Events are immutable facts about completed transfers. They do not perform the
 transaction and are not replayed to reconstruct current state. Resource,
 inventory, and storage records remain authoritative.