refactor: improve type definitions and event handling in CharacterSearchInput component

src/routes/(game)/daily/+page.svelte

@@ -147,8 +147,7 @@
 	$: columnVisibility = data.columnVisibility || {};
 	$: hasWon = selectedCharacters.some(char => char.id === dailyCharacter.id);
 	
-	function handleCharacterSelect(event: CustomEvent) {
-		const character = event.detail;
+	function handleCharacterSelect(character: CharacterWithRelations) {
 		selectCharacter(character);
 	}
 	
@@ -306,7 +305,7 @@
 			<CharacterSearchInput 
 				{characters}
 				{selectedCharacters}
-				on:select={handleCharacterSelect}
+				onSelect={handleCharacterSelect}
 			/>
 			{/if}
 		</section>

src/routes/(game)/infinite/+page.svelte

@@ -299,8 +299,7 @@
 		selectedCharacters = [];
 	}
 
-	function handleCharacterSelect(event: CustomEvent) {
-		const character = event.detail;
+	function handleCharacterSelect(character: CharacterWithRelations) {
 		selectCharacter(character);
 	}
 
@@ -619,7 +618,7 @@
 					<CharacterSearchInput
 						{characters}
 						{selectedCharacters}
-						on:select={handleCharacterSelect}
+						onSelect={handleCharacterSelect}
 					/>
 				{/if}
 			{:else}