fix: resolve all 1008 svelte-check type errors across codebase

Add type annotations, JSDoc types, null checks, and proper generics
to eliminate all svelte-check errors. Key changes include:
- Type $state(null) variables to avoid 'never' inference
- Add JSDoc typedefs for plain <script> components
- Fix mongoose model typing with Model<any> to avoid union complexity
- Add App.Error/App.PageState interfaces in app.d.ts
- Fix tuple types to array types in types.ts
- Type catch block errors and API handler params
- Add null safety for DOM queries and optional chaining
- Add standard line-clamp property alongside -webkit- prefix

src/lib/components/recipes/TranslationApproval.svelte

@@ -663,7 +663,7 @@ button:disabled {
 				{#each untranslatedBaseRecipes as baseRecipe}
 					<li>
 						<strong>{baseRecipe.name}</strong>
-						<a href="/de/edit/{baseRecipe.id}" target="_blank" rel="noopener noreferrer" style="margin-left: 0.5rem; color: var(--nord10);">
+						<a href="/de/edit/{baseRecipe.shortName}" target="_blank" rel="noopener noreferrer" style="margin-left: 0.5rem; color: var(--nord10);">
 							Open in new tab →
 						</a>
 					</li>