style(i18n): fix lint — formatting and import ordering across 21 files

Biome auto-fix for formatting (line length, ternary wrapping) and
import organization in files touched by phase 34 i18n work.

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

src/client/components/CreateThreadModal.tsx

@@ -79,7 +79,9 @@ export function CreateThreadModal() {
 				onClick={(e) => e.stopPropagation()}
 				onKeyDown={() => {}}
 			>
-				<h2 className="text-lg font-semibold text-gray-900 mb-4">{t("create.title")}</h2>
+				<h2 className="text-lg font-semibold text-gray-900 mb-4">
+					{t("create.title")}
+				</h2>
 
 				<form onSubmit={handleSubmit} className="space-y-4">
 					<div>
@@ -135,7 +137,9 @@ export function CreateThreadModal() {
 							disabled={createThread.isPending}
 							className="px-4 py-2 text-sm font-medium text-white bg-gray-700 hover:bg-gray-800 disabled:opacity-50 rounded-lg transition-colors"
 						>
-							{createThread.isPending ? t("common:actions.creating") : t("create.createThread")}
+							{createThread.isPending
+								? t("common:actions.creating")
+								: t("create.createThread")}
 						</button>
 					</div>
 				</form>