Add PF2e persistent damage condition tags

Persistent damage displayed as compact tags with damage type icon and
formula (e.g., Flame + "2d6"). Supports fire, bleed, acid, cold,
electricity, poison, and mental types. One instance per type, added via
sub-picker in the condition picker. PF2e only, persists across reload.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/hooks/use-encounter.ts

@@ -1,6 +1,7 @@
 import type { EncounterStore, UndoRedoStore } from "@initiative/application";
 import {
 	addCombatantUseCase,
+	addPersistentDamageUseCase,
 	adjustHpUseCase,
 	advanceTurnUseCase,
 	clearEncounterUseCase,
@@ -8,6 +9,7 @@ import {
 	editCombatantUseCase,
 	redoUseCase,
 	removeCombatantUseCase,
+	removePersistentDamageUseCase,
 	retreatTurnUseCase,
 	setAcUseCase,
 	setConditionValueUseCase,
@@ -28,6 +30,7 @@ import type {
 	DomainError,
 	DomainEvent,
 	Encounter,
+	PersistentDamageType,
 	Pf2eCreature,
 	PlayerCharacter,
 	UndoRedoState,
@@ -78,6 +81,17 @@ type EncounterAction =
 			conditionId: ConditionId;
 	  }
 	| { type: "toggle-concentration"; id: CombatantId }
+	| {
+			type: "add-persistent-damage";
+			id: CombatantId;
+			damageType: PersistentDamageType;
+			formula: string;
+	  }
+	| {
+			type: "remove-persistent-damage";
+			id: CombatantId;
+			damageType: PersistentDamageType;
+	  }
 	| { type: "clear-encounter" }
 	| { type: "undo" }
 	| { type: "redo" }
@@ -427,6 +441,8 @@ function dispatchEncounterAction(
 		| { type: "set-condition-value" }
 		| { type: "decrement-condition" }
 		| { type: "toggle-concentration" }
+		| { type: "add-persistent-damage" }
+		| { type: "remove-persistent-damage" }
 	>,
 ): EncounterState {
 	const { store, getEncounter } = makeStoreFromState(state);
@@ -488,6 +504,21 @@ function dispatchEncounterAction(
 		case "toggle-concentration":
 			result = toggleConcentrationUseCase(store, action.id);
 			break;
+		case "add-persistent-damage":
+			result = addPersistentDamageUseCase(
+				store,
+				action.id,
+				action.damageType,
+				action.formula,
+			);
+			break;
+		case "remove-persistent-damage":
+			result = removePersistentDamageUseCase(
+				store,
+				action.id,
+				action.damageType,
+			);
+			break;
 	}
 
 	if (isDomainError(result)) return state;
@@ -651,6 +682,16 @@ export function useEncounter() {
 			(id: CombatantId) => dispatch({ type: "toggle-concentration", id }),
 			[],
 		),
+		addPersistentDamage: useCallback(
+			(id: CombatantId, damageType: PersistentDamageType, formula: string) =>
+				dispatch({ type: "add-persistent-damage", id, damageType, formula }),
+			[],
+		),
+		removePersistentDamage: useCallback(
+			(id: CombatantId, damageType: PersistentDamageType) =>
+				dispatch({ type: "remove-persistent-damage", id, damageType }),
+			[],
+		),
 		setCreatureAdjustment: useCallback(
 			(
 				id: CombatantId,