chore(lint): remove dead eslint-disable directives

The project lints with Biome only, so none of these 78 directives across 57
files ever suppressed anything. Directives that carried the rationale for a
flagged dynamic index access keep that rationale as a plain comment.

src/actions/admin-theme.ts

@@ -112,7 +112,7 @@ export async function saveTheme(formData: FormData): Promise<void> {
 export async function applyPreset(formData: FormData): Promise<void> {
 	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
 	const name = String(formData.get("preset") ?? "").normalize("NFC");
-	// eslint-disable-next-line security/detect-object-injection -- guarded by null check below
+	// guarded by null check below
 	const preset = PRESETS[name];
 	if (!preset) redirect("/admin/theme");