feat: 初始化导航网站项目

添加 Flask 导航站应用，包含 Docker 部署配置、SQLite 数据库、静态资源及 CI/CD 流水线。

static/fomantic-ui/components/tab.css

@@ -0,0 +1,91 @@
+/*!
+ * # Semantic UI 2.5.0 - Tab
+ * http://github.com/semantic-org/semantic-ui/
+ *
+ *
+ * Released under the MIT license
+ * http://opensource.org/licenses/MIT
+ *
+ */
+
+
+/*******************************
+           UI Tabs
+*******************************/
+
+.ui.tab {
+  display: none;
+}
+
+
+/*******************************
+             States
+*******************************/
+
+
+/*--------------------
+       Active
+---------------------*/
+
+.ui.tab.active,
+.ui.tab.open {
+  display: block;
+}
+
+/*--------------------
+       Loading
+---------------------*/
+
+.ui.tab.loading {
+  position: relative;
+  overflow: hidden;
+  display: block;
+  min-height: 250px;
+}
+.ui.tab.loading * {
+  position: relative !important;
+  left: -10000px !important;
+}
+.ui.tab.loading:before,
+.ui.tab.loading.segment:before {
+  position: absolute;
+  content: '';
+  top: 100px;
+  left: 50%;
+  margin: -1.25em 0em 0em -1.25em;
+  width: 2.5em;
+  height: 2.5em;
+  border-radius: 500rem;
+  border: 0.2em solid rgba(0, 0, 0, 0.1);
+}
+.ui.tab.loading:after,
+.ui.tab.loading.segment:after {
+  position: absolute;
+  content: '';
+  top: 100px;
+  left: 50%;
+  margin: -1.25em 0em 0em -1.25em;
+  width: 2.5em;
+  height: 2.5em;
+  -webkit-animation: button-spin 0.6s linear;
+          animation: button-spin 0.6s linear;
+  -webkit-animation-iteration-count: infinite;
+          animation-iteration-count: infinite;
+  border-radius: 500rem;
+  border-color: #767676 transparent transparent;
+  border-style: solid;
+  border-width: 0.2em;
+  box-shadow: 0px 0px 0px 1px transparent;
+}
+
+
+/*******************************
+         Tab Overrides
+*******************************/
+
+
+
+/*******************************
+        User Overrides
+*******************************/
+