perf: reuse locals.session from hook instead of re-awaiting locals.auth()

hooks.server.ts already awaits auth() once and stores the result on
locals.session. In-scope loaders (recipe list + filter views, rosary,
prayers, calendar — already done — and fitness stats) were awaiting
locals.auth() a second time per request.

Switched to the existing `locals.session ?? await locals.auth()` pattern
so the hook's result is reused. Also pulls session out of Promise.all
legs since it's now synchronous when the hook ran.

Scope: loaders only — actions, /admin, /edit, /add intentionally skipped.

src/lib/server/favorites.ts

@@ -8,7 +8,7 @@ import type { Session } from '@auth/sveltekit';
 type BriefRecipeWithFavorite = BriefRecipeType & { isFavorite: boolean };
 
 export async function getUserFavorites(fetch: typeof globalThis.fetch, locals: App.Locals, recipeLang = 'rezepte'): Promise<string[]> {
-    const session = await locals.auth();
+    const session = locals.session ?? await locals.auth();
 
     if (!session?.user?.nickname) {
         return [];
@@ -47,10 +47,10 @@ export async function loadRecipesWithFavorites(
     recipeLoader: () => Promise<BriefRecipeType[]>,
     recipeLang = 'rezepte'
 ): Promise<{ recipes: BriefRecipeWithFavorite[], session: Session | null }> {
-    const [recipes, userFavorites, session] = await Promise.all([
+    const session = locals.session ?? await locals.auth();
+    const [recipes, userFavorites] = await Promise.all([
         recipeLoader(),
-        getUserFavorites(fetch, locals, recipeLang),
-        locals.auth()
+        getUserFavorites(fetch, locals, recipeLang)
     ]);
 
     return {

src/routes/[faithLang=faithLang]/[prayers=prayersLang]/[prayer]/+page.server.ts

@@ -36,7 +36,7 @@ export const load: PageServerLoad = async ({ params, url, locals, fetch }) => {
 
 	// Fetch angelus streak data for angelus/regina-caeli pages
 	if (angelusSlugs.has(params.prayer)) {
-		const session = await locals.auth();
+		const session = locals.session ?? await locals.auth();
 		if (session?.user?.nickname) {
 			try {
 				const res = await fetch('/api/glaube/angelus-streak');

src/routes/[faithLang=faithLang]/[rosary=rosaryLang]/+page.server.ts

@@ -43,7 +43,7 @@ function getMysteryForWeekday(date: Date, includeLuminous: boolean): string {
 }
 
 export const load: PageServerLoad = async ({ url, fetch, locals, params }) => {
-  const session = await locals.auth();
+  const session = locals.session ?? await locals.auth();
 
   // Read toggle/mystery state from URL search params (for no-JS progressive enhancement)
   const luminousParam = url.searchParams.get('luminous');

src/routes/[recipeLang=recipeLang]/+page.server.ts

@@ -4,12 +4,11 @@ import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favori
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
     const apiBase = `/api/${params.recipeLang}`;
     const currentMonth = new Date().getMonth() + 1;
+    const session = locals.session ?? await locals.auth();
 
-    // Fetch all_brief, favorites, and session in parallel
-    const [res_all_brief, userFavorites, session] = await Promise.all([
+    const [res_all_brief, userFavorites] = await Promise.all([
         fetch(`${apiBase}/items/all_brief`).then(r => r.json()),
-        getUserFavorites(fetch, locals, params.recipeLang),
-        locals.auth()
+        getUserFavorites(fetch, locals, params.recipeLang)
     ]);
 
     const all_brief = addFavoriteStatusToRecipes(res_all_brief, userFavorites);

src/routes/[recipeLang=recipeLang]/[name]/+page.server.ts

@@ -19,8 +19,7 @@ export const load: PageServerLoad = async ({ fetch, params, locals, url }) => {
     const strippedName = stripHtmlTags(item.name);
     const strippedDescription = stripHtmlTags(item.description);
 
-    // Get session for user info
-    const session = await locals.auth();
+    const session = locals.session ?? await locals.auth();
 
     return {
         item,

src/routes/[recipeLang=recipeLang]/category/[category]/+page.server.ts

@@ -4,11 +4,11 @@ import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favori
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
     const apiBase = `/api/${params.recipeLang}`;
 
-    const [res, allRes, userFavorites, session] = await Promise.all([
+    const session = locals.session ?? await locals.auth();
+    const [res, allRes, userFavorites] = await Promise.all([
         fetch(`${apiBase}/items/category/${params.category}`),
         fetch(`${apiBase}/items/all_brief`),
-        getUserFavorites(fetch, locals, params.recipeLang),
-        locals.auth()
+        getUserFavorites(fetch, locals, params.recipeLang)
     ]);
 
     const [items, allRecipes] = await Promise.all([res.json(), allRes.json()]);

src/routes/[recipeLang=recipeLang]/icon/[icon]/+page.server.ts

@@ -4,11 +4,11 @@ import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favori
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
     const apiBase = `/api/${params.recipeLang}`;
 
-    const [item_season, icons, userFavorites, session] = await Promise.all([
+    const session = locals.session ?? await locals.auth();
+    const [item_season, icons, userFavorites] = await Promise.all([
         fetch(`${apiBase}/items/icon/` + params.icon).then(r => r.json()),
         fetch(`${apiBase}/items/icon`).then(r => r.json()),
-        getUserFavorites(fetch, locals, params.recipeLang),
-        locals.auth()
+        getUserFavorites(fetch, locals, params.recipeLang)
     ]);
 
     return {

src/routes/[recipeLang=recipeLang]/season/+page.server.ts

@@ -8,11 +8,8 @@ export const load: PageServerLoad = async ({ fetch, locals, params }) => {
     const res_season = await fetch(`${apiBase}/items/in_season/` + current_month);
     const item_season = await res_season.json();
 
-    // Get user favorites and session
-    const [userFavorites, session] = await Promise.all([
-        getUserFavorites(fetch, locals, params.recipeLang),
-        locals.auth()
-    ]);
+    const session = locals.session ?? await locals.auth();
+    const userFavorites = await getUserFavorites(fetch, locals, params.recipeLang);
 
     return {
         season: addFavoriteStatusToRecipes(item_season, userFavorites),

src/routes/[recipeLang=recipeLang]/season/[month]/+page.server.ts

@@ -7,11 +7,8 @@ export const load: PageServerLoad = async ({ fetch, locals, params }) => {
     const res_season = await fetch(`${apiBase}/items/in_season/` + params.month);
     const item_season = await res_season.json();
 
-    // Get user favorites and session
-    const [userFavorites, session] = await Promise.all([
-        getUserFavorites(fetch, locals, params.recipeLang),
-        locals.auth()
-    ]);
+    const session = locals.session ?? await locals.auth();
+    const userFavorites = await getUserFavorites(fetch, locals, params.recipeLang);
 
     return {
         month: params.month,

src/routes/[recipeLang=recipeLang]/tag/[tag]/+page.server.ts

@@ -4,11 +4,11 @@ import { getUserFavorites, addFavoriteStatusToRecipes } from "$lib/server/favori
 export const load: PageServerLoad = async ({ fetch, locals, params }) => {
     const apiBase = `/api/${params.recipeLang}`;
 
-    const [res_tag, allRes, userFavorites, session] = await Promise.all([
+    const session = locals.session ?? await locals.auth();
+    const [res_tag, allRes, userFavorites] = await Promise.all([
         fetch(`${apiBase}/items/tag/${params.tag}`),
         fetch(`${apiBase}/items/all_brief`),
-        getUserFavorites(fetch, locals, params.recipeLang),
-        locals.auth()
+        getUserFavorites(fetch, locals, params.recipeLang)
     ]);
 
     const [items_tag, allRecipes] = await Promise.all([res_tag.json(), allRes.json()]);

src/routes/[recipeLang=recipeLang]/to-try/+page.server.ts

@@ -4,7 +4,7 @@ import { ToTryRecipe } from '$models/ToTryRecipe';
 import { dbConnect } from '$utils/db';
 
 export const load: PageServerLoad = async ({ locals, params }) => {
-    const session = await locals.auth();
+    const session = locals.session ?? await locals.auth();
 
     if (!session?.user) {
         const callbackUrl = encodeURIComponent(`/${params.recipeLang}/to-try`);

src/routes/fitness/[stats=fitnessStats]/+page.server.ts

@@ -1,7 +1,7 @@
 import type { PageServerLoad } from './$types';
 
 export const load: PageServerLoad = async ({ fetch, locals }) => {
-	const session = await locals.auth();
+	const session = locals.session ?? await locals.auth();
 	const [res, goalRes, heatmapRes, nutritionRes, latestRes, periodRes, sharedRes] = await Promise.all([
 		fetch('/api/fitness/stats/overview'),
 		fetch('/api/fitness/goal'),