fix(apologetik): drop duplicate Cache-Control in child loads

Layout already sets Cache-Control; SvelteKit throws when the same
header is set twice in the load chain, 500ing /glaube/apologetik/pro
and the parallel routes.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.64.0",
+	"version": "1.64.1",
 	"private": true,
 	"type": "module",
 	"scripts": {

src/routes/[faithLang=faithLang]/[apologetikSlug=apologetikSlug]/contra/+page.ts

@@ -1,8 +1,7 @@
 import { getArchetypes, getArguments } from '$lib/data/apologetik';
 import type { PageLoad } from './$types';
 
-export const load: PageLoad = async ({ parent, setHeaders }) => {
+export const load: PageLoad = async ({ parent }) => {
-	setHeaders({ 'Cache-Control': 'public, max-age=300, s-maxage=3600, stale-while-revalidate=86400' });
 	const { lang } = await parent();
 	const [archetypes, args] = await Promise.all([getArchetypes(lang), getArguments(lang)]);
 	return { archetypes, args };

src/routes/[faithLang=faithLang]/[apologetikSlug=apologetikSlug]/contra/[argId]/[[archId]]/+page.ts

@@ -5,8 +5,7 @@ import { generateBreadcrumbJsonLd } from '$lib/js/breadcrumbJsonLd';
 import { m as faithM, faithSlugFromLang, apologetikSlug, type FaithLang } from '$lib/js/faithI18n';
 import type { PageLoad } from './$types';
 
-export const load: PageLoad = async ({ params, parent, setHeaders }) => {
+export const load: PageLoad = async ({ params, parent }) => {
-	setHeaders({ 'Cache-Control': 'public, max-age=300, s-maxage=3600, stale-while-revalidate=86400' });
 	const parentData = await parent();
 	const lang = parentData.lang as FaithLang;
 	const [arg, archetypes, args] = await Promise.all([

src/routes/[faithLang=faithLang]/[apologetikSlug=apologetikSlug]/pro/+page.server.ts

@@ -7,8 +7,7 @@ import {
 } from '$lib/data/apologetik';
 import { resolveScriptureForLang } from '$lib/server/scriptureLookup';
 
-export const load: PageServerLoad = async ({ parent, setHeaders }) => {
+export const load: PageServerLoad = async ({ parent }) => {
-	setHeaders({ 'Cache-Control': 'public, max-age=300, s-maxage=3600, stale-while-revalidate=86400' });
 	const { lang } = await parent();
 	const [voices, layers, args] = await Promise.all([
 		getPosVoices(lang),

src/routes/[faithLang=faithLang]/[apologetikSlug=apologetikSlug]/pro/[posArgId]/[[voiceId]]/+page.server.ts

@@ -12,12 +12,7 @@ import { generateProArgArticleJsonLd } from '$lib/js/apologetikJsonLd';
 import { generateBreadcrumbJsonLd } from '$lib/js/breadcrumbJsonLd';
 import { m as faithM, faithSlugFromLang, apologetikSlug, type FaithLang } from '$lib/js/faithI18n';
 
-export const load: PageServerLoad = async ({ params, parent, setHeaders }) => {
+export const load: PageServerLoad = async ({ params, parent }) => {
-	// Pure static content — long-form prose with no per-user state. Cache aggressively
-	// at the edge so crawlers (and casual readers) get sub-50ms TTFB. Logged-in users
-	// still get fresh server-rendered pages because most reverse proxies vary on cookies.
-	setHeaders({ 'Cache-Control': 'public, max-age=300, s-maxage=3600, stale-while-revalidate=86400' });
-
 	const parentData = await parent();
 	const lang = parentData.lang as FaithLang;
 	const [arg, voices, layers, args] = await Promise.all([