feat: quick-log sidebar with favorites and recent foods

Desktop sidebar (1600px+) for one-click food logging with inline amount
input. Favorites and recent items (last 3 days) shown with meal type
auto-selected by time of day. New /api/nutrition/lookup endpoint for
exact source+id food data retrieval. Parent container width override
via JS class toggle for reliable SvelteKit client-side navigation.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.15.0",
+	"version": "1.16.0",
 	"private": true,
 	"type": "module",
 	"scripts": {