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.

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))