chore: fix lint errors — auto-format, isNaN, unused imports, button type

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

tests/services/tag.service.test.ts

@@ -5,16 +5,11 @@ import {
 	deleteTag,
 	getAdminTags,
 	getAllTags,
-	getTagWithCounts,
 	updateTag,
 } from "../../src/server/services/tag.service.ts";
 import { createTestDb } from "../helpers/db.ts";
 
-async function insertTag(
-	db: any,
-	name: string,
-	parentId?: number | null,
-) {
+async function insertTag(db: any, name: string, parentId?: number | null) {
 	const [row] = await db
 		.insert(tags)
 		.values({ name, parentId: parentId ?? null })
@@ -108,7 +103,10 @@ describe("createTag", () => {
 
 	it("creates a tag with parentId set to an existing tag id", async () => {
 		const parent = await createTag(db, { name: "gear" });
-		const child = await createTag(db, { name: "clothing", parentId: parent.id });
+		const child = await createTag(db, {
+			name: "clothing",
+			parentId: parent.id,
+		});
 		expect(child.parentId).toBe(parent.id);
 	});
 });
@@ -175,7 +173,7 @@ describe("deleteTag", () => {
 		const parent = await insertTag(db, "parent");
 		const child = await insertTag(db, "child", parent.id);
 		await deleteTag(db, parent.id);
-		const [childRow] = await db
+		const [_childRow] = await db
 			.select({ parentId: tags.parentId })
 			.from(tags)
 			.where((t: any) => t.id === child.id);