Show toast when roll-all-initiative skips combatants without loaded sources

Previously the button silently did nothing for creatures whose bestiary
source wasn't loaded. Now it reports how many were skipped and why. Also
keeps the roll-all button visible (but disabled) when there's nothing
left to roll, and moves toasts to the bottom-left corner.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/App.tsx

@@ -2,7 +2,12 @@ import {
 	rollAllInitiativeUseCase,
 	rollInitiativeUseCase,
 } from "@initiative/application";
-import type { CombatantId, Creature, CreatureId } from "@initiative/domain";
+import {
+	type CombatantId,
+	type Creature,
+	type CreatureId,
+	isDomainError,
+} from "@initiative/domain";
 import {
 	useCallback,
 	useEffect,
@@ -109,6 +114,8 @@ export function App() {
 
 	const bulkImport = useBulkImport();
 
+	const [rollSkippedCount, setRollSkippedCount] = useState(0);
+
 	const [selectedCreatureId, setSelectedCreatureId] =
 		useState<CreatureId | null>(null);
 	const [bulkImportMode, setBulkImportMode] = useState(false);
@@ -158,7 +165,10 @@ export function App() {
 	);
 
 	const handleRollAllInitiative = useCallback(() => {
-		rollAllInitiativeUseCase(makeStore(), rollDice, getCreature);
+		const result = rollAllInitiativeUseCase(makeStore(), rollDice, getCreature);
+		if (!isDomainError(result) && result.skippedNoSource > 0) {
+			setRollSkippedCount(result.skippedNoSource);
+		}
 	}, [makeStore, getCreature]);
 
 	const handleViewStatBlock = useCallback((result: SearchResult) => {
@@ -252,7 +262,10 @@ export function App() {
 	}, [encounter.activeIndex, encounter.combatants, isLoaded]);
 
 	const isEmpty = encounter.combatants.length === 0;
-	const showRollAllInitiative = encounter.combatants.some(
+	const hasCreatureCombatants = encounter.combatants.some(
+		(c) => c.creatureId != null,
+	);
+	const canRollAllInitiative = encounter.combatants.some(
 		(c) => c.creatureId != null && c.initiative == null,
 	);
 
@@ -293,7 +306,8 @@ export function App() {
 								onAddFromPlayerCharacter={addFromPlayerCharacter}
 								onManagePlayers={() => setManagementOpen(true)}
 								onRollAllInitiative={handleRollAllInitiative}
-								showRollAllInitiative={showRollAllInitiative}
+								showRollAllInitiative={hasCreatureCombatants}
+								rollAllInitiativeDisabled={!canRollAllInitiative}
 								onOpenSourceManager={handleOpenSourceManager}
 								autoFocus
 							/>
@@ -349,7 +363,8 @@ export function App() {
 								onAddFromPlayerCharacter={addFromPlayerCharacter}
 								onManagePlayers={() => setManagementOpen(true)}
 								onRollAllInitiative={handleRollAllInitiative}
-								showRollAllInitiative={showRollAllInitiative}
+								showRollAllInitiative={hasCreatureCombatants}
+								rollAllInitiativeDisabled={!canRollAllInitiative}
 								onOpenSourceManager={handleOpenSourceManager}
 							/>
 						</div>
@@ -427,6 +442,14 @@ export function App() {
 				/>
 			)}
 
+			{rollSkippedCount > 0 && (
+				<Toast
+					message={`${rollSkippedCount} skipped — bestiary source not loaded`}
+					onDismiss={() => setRollSkippedCount(0)}
+					autoDismissMs={4000}
+				/>
+			)}
+
 			<CreatePlayerModal
 				open={createPlayerOpen}
 				onClose={() => {