chore: reorganize timeline into view/ and detail/ folders, move home.png to assets/

src/lib/world-map/WorldMap.svelte

@@ -5,7 +5,7 @@
   import worldData from 'world-atlas/countries-50m.json';
   import { getSelected, setTotalCount, getFlashing } from '../layout/selection.svelte.js';
   import { getUserProfile } from '../auth/userStore.svelte.js';
-  import homeIconUrl from '../../assets 2/home.png';
+  import homeIconUrl from '../../assets/home.png';
   import crayonCursorUrl from '../../assets/logo-cursor.png';
 
   let { onCountryClick = (_name) => {} } = $props();