refactor(sidebar)!: rename Sidebar to AppSidebar

Vue.js components should have multi-word names.

src/features/sidebar/components/AppSidebar.vue

@@ -0,0 +1,77 @@
+<!--
+Copyright 2026 Seekra
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<script setup>
+import SidebarExpandButton from './SidebarExpandButton.vue';
+
+const props = defineProps({
+    'expanded': {
+        default: false,
+        required: false,
+        type: Boolean
+    }
+});
+const emit = defineEmits(['toggleExpanded']);
+
+const toggleSidebar = function toggleSidebar() {
+    emit('toggleExpanded');
+};
+</script>
+
+<template>
+    <nav class="sidebar" :class="{ expanded }">
+        <div class="sidebar-controls">
+            <SidebarExpandButton @click="toggleSidebar" class="sidebar-expand-button" />
+        </div>
+        <div class="sidebar-content" v-show="props.expanded">
+            <slot />
+        </div>
+    </nav>
+</template>
+
+<style scoped>
+.sidebar {
+    border-right: 1px solid var(--border);
+}
+
+.sidebar-controls {
+    display: flex;
+    align-items: center;
+    justify-content: end;
+    padding: 1em 20px;
+    padding-bottom: 0;
+    margin-bottom: 8px;
+}
+
+.sidebar:not(.expanded) .sidebar-controls {
+    padding: 1em;
+}
+
+@media (max-width: 48rem) {
+    .sidebar {
+        border: none;
+    }
+
+    .sidebar:not(.expanded) .sidebar-expand-button {
+        display: none;
+    }
+}
+
+.sidebar-content {
+    padding: 20px;
+    padding-top: 0;
+}
+</style>