fix: resolve all 58 TypeScript errors across codebase

- Add SvelteKit PageLoad/LayoutLoad/Actions types to recipe route files
- Fix possibly-undefined access on recipe.images, translations.en
- Fix parseFloat on number types in cospend split validation
- Use discriminated union guards for IngredientItem/InstructionItem
- Fix cache invalidation Promise<number> vs Promise<void> mismatch
- Suppress Mongoose model() complex union type error in WorkoutSession

src/routes/[recipeLang=recipeLang]/+layout.ts

@@ -1,7 +1,8 @@
 import { browser } from '$app/environment';
 import { error } from '@sveltejs/kit';
+import type { LayoutLoad } from './$types';
 
-export async function load({ params, data }) {
+export const load: LayoutLoad = async ({ params, data }) => {
 	// Validate recipeLang parameter
 	if (params.recipeLang !== 'rezepte' && params.recipeLang !== 'recipes') {
 		throw error(404, 'Not found');
@@ -31,4 +32,4 @@ export async function load({ params, data }) {
 		recipeLang: params.recipeLang,
 		isOffline: false
 	};
-}
+};

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

@@ -2,8 +2,9 @@ import { browser } from '$app/environment';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getAllBriefRecipes, getBriefRecipesBySeason, isOfflineDataAvailable } from '$lib/offline/db';
 import { rand_array } from '$lib/js/randomize';
+import type { PageLoad } from './$types';
 
-export async function load({ data }) {
+export const load: PageLoad = async ({ data }) => {
 	// On the server, just pass through the server data unchanged
 	if (!browser) {
 		return {
@@ -48,4 +49,4 @@ export async function load({ data }) {
 		...data,
 		isOffline: false
 	};
-}
+};

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

@@ -1,5 +1,5 @@
 import { redirect, error } from '@sveltejs/kit';
-import type { PageServerLoad } from './$types';
+import type { PageServerLoad, Actions } from './$types';
 import { stripHtmlTags } from '$lib/js/stripHtmlTags';
 
 export const load: PageServerLoad = async ({ fetch, params, locals }) => {
@@ -31,7 +31,7 @@ export const load: PageServerLoad = async ({ fetch, params, locals }) => {
     };
 };
 
-export const actions = {
+export const actions: Actions = {
     toggleFavorite: async ({ request, locals, url, fetch }) => {
         const session = await locals.auth();
         

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

@@ -3,8 +3,9 @@ import { generateRecipeJsonLd } from '$lib/js/recipeJsonLd';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getFullRecipe, isOfflineDataAvailable } from '$lib/offline/db';
 import { stripHtmlTags } from '$lib/js/stripHtmlTags';
+import type { PageLoad } from './$types';
 
-export async function load({ fetch, params, url, data }) {
+export const load: PageLoad = async ({ fetch, params, url, data }) => {
     const isEnglish = params.recipeLang === 'recipes';
 
     // Check if we need to load from IndexedDB (offline mode)
@@ -200,4 +201,4 @@ export async function load({ fetch, params, url, data }) {
         strippedDescription,
         isOffline: isOfflineMode,
     };
-}
+};

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

@@ -2,8 +2,9 @@ import { browser } from '$app/environment';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getBriefRecipesByCategory, isOfflineDataAvailable } from '$lib/offline/db';
 import { rand_array } from '$lib/js/randomize';
+import type { PageLoad } from './$types';
 
-export async function load({ data, params }) {
+export const load: PageLoad = async ({ data, params }) => {
 	// On the server, just pass through the server data unchanged
 	if (!browser) {
 		return {
@@ -37,4 +38,4 @@ export async function load({ data, params }) {
 		...data,
 		isOffline: false
 	};
-}
+};

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

@@ -2,8 +2,9 @@ import { browser } from '$app/environment';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getBriefRecipesByIcon, getAllBriefRecipes, isOfflineDataAvailable } from '$lib/offline/db';
 import { rand_array } from '$lib/js/randomize';
+import type { PageLoad } from './$types';
 
-export async function load({ data, params }) {
+export const load: PageLoad = async ({ data, params }) => {
 	// On the server, just pass through the server data unchanged
 	if (!browser) {
 		return {
@@ -49,4 +50,4 @@ export async function load({ data, params }) {
 		...data,
 		isOffline: false
 	};
-}
+};

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

@@ -2,8 +2,9 @@ import { browser } from '$app/environment';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getBriefRecipesBySeason, isOfflineDataAvailable } from '$lib/offline/db';
 import { rand_array } from '$lib/js/randomize';
+import type { PageLoad } from './$types';
 
-export async function load({ data }) {
+export const load: PageLoad = async ({ data }) => {
     // On the server, just pass through the server data unchanged
     if (!browser) {
         return {
@@ -38,4 +39,4 @@ export async function load({ data }) {
         ...data,
         isOffline: false
     };
-}
+};

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

@@ -2,8 +2,9 @@ import { browser } from '$app/environment';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getBriefRecipesBySeason, isOfflineDataAvailable } from '$lib/offline/db';
 import { rand_array } from '$lib/js/randomize';
+import type { PageLoad } from './$types';
 
-export async function load({ data, params }) {
+export const load: PageLoad = async ({ data, params }) => {
 	// On the server, just pass through the server data unchanged
 	if (!browser) {
 		return {
@@ -38,4 +39,4 @@ export async function load({ data, params }) {
 		...data,
 		isOffline: false
 	};
-}
+};

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

@@ -2,8 +2,9 @@ import { browser } from '$app/environment';
 import { isOffline, canUseOfflineData } from '$lib/offline/helpers';
 import { getBriefRecipesByTag, isOfflineDataAvailable } from '$lib/offline/db';
 import { rand_array } from '$lib/js/randomize';
+import type { PageLoad } from './$types';
 
-export async function load({ data, params }) {
+export const load: PageLoad = async ({ data, params }) => {
 	// On the server, just pass through the server data unchanged
 	if (!browser) {
 		return {
@@ -37,4 +38,4 @@ export async function load({ data, params }) {
 		...data,
 		isOffline: false
 	};
-}
+};