Task: Fixed server routes loop and add server layout for vaadin flow backend from java code design and rename theme name to fusion and updated the views and add mock users for show data grid and fixed all views

frontend/themes/fusion/main-layout.css

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+.sidemenu-header {
+  align-items: center;
+  box-shadow: var(--lumo-box-shadow-s);
+  display: flex;
+  height: var(--lumo-size-xl);
+  width: 100%;
+}
+
+.sidemenu-header h1 {
+  font-size: var(--lumo-font-size-l);
+  margin: 0;
+}
+
+.sidemenu-menu #logo {
+  align-items: center;
+  box-sizing: border-box;
+  display: flex;
+  padding: var(--lumo-space-s) var(--lumo-space-m);
+}
+
+.sidemenu-menu #logo img {
+  height: calc(var(--lumo-size-l) * 1.5);
+}
+
+.sidemenu-menu #logo span {
+  font-size: var(--lumo-font-size-xl);
+  font-weight: 600;
+  margin: 0 var(--lumo-space-s);
+}
+
+.sidemenu-menu vaadin-tab {
+  font-size: var(--lumo-font-size-s);
+  height: var(--lumo-size-l);
+  font-weight: 600;
+  color: var(--lumo-body-text-color);
+}
+
+.sidemenu-menu vaadin-tab:hover {
+  background-color: var(--lumo-contrast-5pct);
+  text-decoration: none;
+}
+
+.sidemenu-menu vaadin-tab[selected] {
+  background-color: var(--lumo-primary-color-10pct);
+  color: var(--lumo-primary-text-color);
+}
+
+hr {
+  margin: 0;
+}

frontend/themes/fusion/styles.css

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+@import url('./main-layout.css');
+@import url('./views/home-view.css');
+@import url('./views/profile-view.css');
+@import url('./views/admin-view.css');
+@import url('line-awesome/dist/line-awesome/css/line-awesome.min.css');
+@import url('@fontsource/roboto');    html {
+--lumo-font-family: Roboto;
+
+    }

frontend/themes/fusion/theme.json

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+{"lumoImports":["typography","color","spacing","badge","utility"]}

frontend/themes/fusion/views/admin-view.css

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+admin-view {
+  display: block;
+}

frontend/themes/fusion/views/home-view.css

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+home-view {
+  display: block;
+}

frontend/themes/fusion/views/profile-view.css

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+profile-view {
+  display: block;
+}