refactor: update page title/description and enhance HomeTab card hover effects

- Changed page title from "Unleash the Power of Decentralized Networks" to "Built for Digital Sovereignty"
- Updated meta description to emphasize sovereign peer-to-peer network and user-controlled infrastructure
- Refactored HomeTab card hover effects: moved scale transform from inner div to parent Link element
- Added border-transparent with hover:border-cyan-500 to card outline divs for cleaner hover state
- Remove

index.html

@@ -4,8 +4,8 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/x-icon" href="/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Project Mycelium - Unleash the Power of Decentralized Networks</title>
-    <meta name="description" content="Project Mycelium's technology enables anyone to deploy their own Internet infrastructure, anywhere." />
+    <title>Project Mycelium - Built for Digital Sovereignty</title>
+    <meta name="description" content="Discover Project Mycelium. A sovereign peer-to-peer network for private communication, storage, and compute. Build and run your digital environment on infrastructure you control." />
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link href="https://fonts.googleapis.com/css2?family=Mulish:wght@400;500;700&display=swap" rel="stylesheet" />