REFACTOR(repo): simplify project structure

- Move services/nextjs/ to nextjs/
- Move Dockerfile.prod to Dockerfile at root
- Remove deploy/ folder (K8s manifests moved to K3S-HOME/web-apps)
- Remove .gitea/ workflows
- Update GitHub Actions for new structure
- Remove develop branch triggers

nextjs/styles/navigation.module.css

@@ -0,0 +1,28 @@
+.nav{
+    background-color: #2d2d2d;
+    position: fixed;
+    width: 30%;
+    margin: 0 auto;
+    top: 20px;
+    border-radius: 50px;
+    padding: 20px 0px;
+    left: 50%;
+    z-index: 10;
+    transform: translateX(-50%);
+    }
+    
+    .nav ul {
+    display: flex;
+    justify-content: center;
+    gap: 50px;
+    }
+    
+    .nav ul li {
+    list-style: none;
+    transform: none;
+    transition: all 0.1s ease-in-out;
+    }
+    
+    .nav ul li:hover {
+    transform: scale(1.05);
+    }