perf: cut biome lint from 25s to 1s and fix pre-existing lint failures

Exclude generated drizzle-kit snapshot artifacts from formatting checks (drizzle/drafts/meta), which made biome scan a 360KB generated JSON for 23s. Fix the pre-existing lint errors in error-monitor, article-form and the admin-search-permissions mock so pnpm biome:lint is green in CI.

biome.json

@@ -7,7 +7,7 @@
 	},
 	"files": {
 		"ignoreUnknown": false,
-		"includes": ["**", "!setup", "!*.cjs", "!coverage"]
+		"includes": ["**", "!setup", "!*.cjs", "!coverage", "!drizzle/drafts/meta"]
 	},
 	"formatter": {
 		"enabled": true,

src/components/admin/article-form.tsx

@@ -14,7 +14,7 @@ export function ArticleForm({
 	action,
 	defaultValues,
 }: {
-	action: (formData: FormData) => Promise<ArticleSaveResult | void>;
+	action: (formData: FormData) => Promise<ArticleSaveResult | undefined>;
 	edit?: boolean;
 	defaultValues?: {
 		title?: string;

src/lib/admin-search-permissions.test.ts

@@ -5,11 +5,13 @@ const state = vi.hoisted(() => ({
 	queried: [] as unknown[],
 }));
 vi.mock("@/lib/api-handler", () => ({
-	withAdmin: (_: unknown, handler: Function) => (request: unknown) =>
-		handler(request, {
-			session: { user: { id: 1, rank: 7 } },
-			permissions: { isSuperAdmin: false },
-		}),
+	withAdmin:
+		(_: unknown, handler: (...args: unknown[]) => unknown) =>
+		(request: unknown) =>
+			handler(request, {
+				session: { user: { id: 1, rank: 7 } },
+				permissions: { isSuperAdmin: false },
+			}),
 }));
 vi.mock("@/lib/rate-limit", () => ({ rateLimit: async () => ({ ok: true }) }));
 vi.mock("@/lib/permissions", async () => ({

src/lib/error-monitor.ts

@@ -115,12 +115,12 @@ export class ErrorStore {
 				name.slice(0, 10) < cutoff
 			)
 				await unlink(path.join(this.directory, name)).catch(() => {});
-		const file = path.join(this.directory, record.at.slice(0, 10) + ".jsonl");
+		const file = path.join(this.directory, `${record.at.slice(0, 10)}.jsonl`);
 		const size = await stat(file)
 			.then((s) => s.size)
 			.catch(() => 0);
 		if (size >= DAY_LIMIT) throw new Error("Daily error storage limit reached");
-		await appendFile(file, JSON.stringify(record) + "\n", { mode: 0o600 });
+		await appendFile(file, `${JSON.stringify(record)}\n`, { mode: 0o600 });
 	}
 	async resolve(fingerprint: string) {
 		if (!/^[a-f0-9]{16}$/.test(fingerprint))