refactor: move ark into dentritic pattern

modules/koon/host/ark/service/git/assets/css/custom.css

@@ -0,0 +1,15 @@
+/* custom.css */
+:root {
+  --color-primary: #2e7d32;
+  --color-primary-dark: #1b5e20;
+}
+
+/* Hide "Powered by Gitea" */
+.footer .ui.container .ui.left {
+  display: none;
+}
+
+/* Custom header background */
+.ui.top.menu {
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+}

modules/koon/host/ark/service/git/assets/img/favicon.svg

@@ -0,0 +1,6 @@
+<svg width="321" height="524" viewBox="0 0 321 524" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M321 249C267.137 251.03 192 393.5 192 524L192 249L321 249Z" fill="black"/>
+<path d="M0 190C54.6982 188.598 131 85 131 0V190H0Z" fill="black"/>
+<path d="M70 249H131V310H70V249Z" fill="black"/>
+<path d="M192 129H253V190H192V129Z" fill="black"/>
+</svg>

modules/koon/host/ark/service/git/assets/img/logo.svg

@@ -0,0 +1,6 @@
+<svg width="321" height="524" viewBox="0 0 321 524" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M321 249C267.137 251.03 192 393.5 192 524L192 249L321 249Z" fill="black"/>
+<path d="M0 190C54.6982 188.598 131 85 131 0V190H0Z" fill="black"/>
+<path d="M70 249H131V310H70V249Z" fill="black"/>
+<path d="M192 129H253V190H192V129Z" fill="black"/>
+</svg>