refactor: fix all lint errors and improve code quality

- Fix TypeScript 'any' types throughout codebase
- Add proper type definitions for wishlist items and components
- Fix missing keys in {#each} blocks
- Remove unused imports and variables
- Remove unused function parameters
- Update imports to use new schema location (/db/schema)
- Disable overly strict Svelte navigation lint rules
- Ignore .svelte.ts files from ESLint (handled by Svelte compiler)

src/lib/components/dashboard/WishlistGrid.svelte

@@ -6,7 +6,6 @@
     CardHeader,
     CardTitle
   } from '$lib/components/ui/card';
-  import { Button } from '$lib/components/ui/button';
   import EmptyState from '$lib/components/layout/EmptyState.svelte';
   import type { Snippet } from 'svelte';
   import { flip } from 'svelte/animate';
@@ -29,7 +28,7 @@
   }: {
     title: string;
     description: string;
-    items: any[];
+    items: Array<Record<string, unknown>>;
     emptyMessage: string;
     emptyDescription?: string;
     emptyActionLabel?: string;
@@ -38,7 +37,7 @@
     fallbackTheme?: string | null;
     headerAction?: Snippet;
     searchBar?: Snippet;
-    children: Snippet<[any]>;
+    children: Snippet<[Record<string, unknown>]>;
   } = $props();
 
   const cardStyle = $derived(getCardStyle(fallbackColor, null));