feat: Rebrand from CS2.WTF to teamflash.rip with full pun mode

Complete site rebrand with flash-themed humor throughout:

- Update logo to "team" + "flash.rip" two-color design
- Add flash-themed error pages (404 = "You've Been Full-Blind")
- Revamp homepage hero with "Stop Flashing Your Teammates" tagline
- Update flash statistics page with playful labels ("Friendly Crimes", "Self-Inflicted L")
- Add loading messages store with flash-themed text
- Update all page meta titles and descriptions
- Update sitemap.xml and robots.txt with new domain
- Update package.json name and description

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/lib/components/layout/Header.svelte

@@ -17,9 +17,9 @@
 	<div class="container mx-auto px-4">
 		<div class="flex h-16 items-center justify-between">
 			<!-- Logo -->
-			<a href="/" class="transition-transform hover:scale-105" aria-label="CS2.WTF Home">
+			<a href="/" class="transition-transform hover:scale-105" aria-label="teamflash.rip Home">
 				<h1 class="text-2xl font-bold">
-					<span class="text-primary">CS2</span><span class="text-secondary">.WTF</span>
+					<span class="text-primary">team</span><span class="text-secondary">flash.rip</span>
 				</h1>
 			</a>