fix: resolve runtime errors and missing routes

- Fix $effect orphan error: move $effect calls from store constructors
  to initEffects() methods called from component context
- Fix icon rendering: create DynamicIcon component to render Lucide icons
  from name strings instead of displaying raw text
- Add /boards/new route for board creation
- Fix seed emails (admin@launcher.local / user@launcher.local) to pass
  Zod email validation

src/routes/+layout.svelte

@@ -5,9 +5,17 @@
 	import MainLayout from '$lib/components/layout/MainLayout.svelte';
 	import { page } from '$app/stores';
 	import { fade } from 'svelte/transition';
+	import { theme } from '$lib/stores/theme.svelte';
+	import { ui } from '$lib/stores/ui.svelte';
+	import { search } from '$lib/stores/search.svelte';
 
 	let { data, children }: { data: LayoutData; children: Snippet } = $props();
 
+	// Initialize store effects within component context
+	theme.initEffects();
+	ui.initEffects();
+	search.initEffects();
+
 	// Pages that should NOT have the main layout (login, register)
 	const noLayoutPaths = ['/login', '/register'];
 	const showLayout = $derived(!noLayoutPaths.includes($page.url.pathname));