update: improve project structure and add linting/formatting

- Remove duplicate lucide-svelte package, keep @lucide/svelte
- Move schema from src/lib/server/ to src/lib/db/ for better organization
- Add path aliases to svelte.config.js (, , , , )
- Add ESLint and Prettier configuration with 2-space indentation
- Update all imports to use new schema location and icon package

svelte.config.js

@@ -10,7 +10,14 @@ const config = {
 	kit: {
 		adapter: adapter({
 			out: 'build'
-		})
+		}),
+		alias: {
+			'$db': './src/lib/db',
+			'$components': './src/lib/components',
+			'$utils': './src/lib/utils',
+			'$stores': './src/lib/stores',
+			'$i18n': './src/lib/i18n'
+		}
 	}
 };