feat(ui): wire quick connect input and global Ctrl+K shortcut

Quick connect bar in toolbar parses user@host:port format with
auto-protocol detection (port 3389 -> RDP, default SSH:22).
Global keydown listener triggers command palette on Ctrl/Cmd+K.
MainLayout now integrates ThemePicker, ImportDialog, and
CommandPalette overlays.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/layouts/MainLayout.vue

@@ -8,8 +8,29 @@
       <span class="text-sm font-bold tracking-widest text-[var(--wraith-accent-blue)]">
         WRAITH
       </span>
-      <div class="flex items-center gap-3 text-xs text-[var(--wraith-text-secondary)]">
+
+      <!-- Quick Connect -->
+      <div class="flex-1 max-w-xs mx-4" style="--wails-draggable: no-drag">
+        <input
+          v-model="quickConnectInput"
+          type="text"
+          placeholder="Quick connect: user@host:port"
+          class="w-full px-2.5 py-1 text-xs rounded bg-[var(--wraith-bg-tertiary)] border border-[var(--wraith-border)] text-[var(--wraith-text-primary)] placeholder-[var(--wraith-text-muted)] outline-none focus:border-[var(--wraith-accent-blue)] transition-colors"
+          @keydown.enter="handleQuickConnect"
+        />
+      </div>
+
+      <div class="flex items-center gap-3 text-xs text-[var(--wraith-text-secondary)]" style="--wails-draggable: no-drag">
         <span>{{ sessionStore.sessionCount }} session{{ sessionStore.sessionCount !== 1 ? "s" : "" }}</span>
+        <button
+          class="hover:text-[var(--wraith-text-primary)] transition-colors cursor-pointer"
+          title="Command palette (Ctrl+K)"
+          @click="commandPalette?.toggle()"
+        >
+          <svg class="w-4 h-4" viewBox="0 0 16 16" fill="currentColor">
+            <path d="M11.5 7a4.5 4.5 0 1 1-9 0 4.5 4.5 0 0 1 9 0zm-.82 4.74a6 6 0 1 1 1.06-1.06l3.04 3.04a.75.75 0 1 1-1.06 1.06l-3.04-3.04z" />
+          </svg>
+        </button>
         <button
           class="hover:text-[var(--wraith-text-primary)] transition-colors cursor-pointer"
           title="Lock vault"
@@ -89,12 +110,21 @@
     </div>
 
     <!-- Status bar -->
-    <StatusBar />
+    <StatusBar ref="statusBar" @open-theme-picker="themePicker?.open()" />
+
+    <!-- Command Palette (Ctrl+K) -->
+    <CommandPalette ref="commandPalette" @open-import="importDialog?.open()" />
+
+    <!-- Theme Picker -->
+    <ThemePicker ref="themePicker" @select="handleThemeSelect" />
+
+    <!-- Import Dialog -->
+    <ImportDialog ref="importDialog" />
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref } from "vue";
+import { ref, onMounted, onUnmounted } from "vue";
 import { useAppStore } from "@/stores/app.store";
 import { useConnectionStore } from "@/stores/connection.store";
 import { useSessionStore } from "@/stores/session.store";
@@ -106,6 +136,10 @@ import TabBar from "@/components/session/TabBar.vue";
 import SessionContainer from "@/components/session/SessionContainer.vue";
 import StatusBar from "@/components/common/StatusBar.vue";
 import EditorWindow from "@/components/editor/EditorWindow.vue";
+import CommandPalette from "@/components/common/CommandPalette.vue";
+import ThemePicker from "@/components/common/ThemePicker.vue";
+import ImportDialog from "@/components/common/ImportDialog.vue";
+import type { ThemeDefinition } from "@/components/common/ThemePicker.vue";
 import type { SidebarTab } from "@/components/sidebar/SidebarToggle.vue";
 import type { FileEntry } from "@/composables/useSftp";
 
@@ -115,15 +149,21 @@ const sessionStore = useSessionStore();
 
 const sidebarWidth = ref(240);
 const sidebarTab = ref<SidebarTab>("connections");
+const quickConnectInput = ref("");
 
 /** Currently open file in the editor panel (null = no file open). */
 const editorFile = ref<{ content: string; path: string; sessionId: string } | null>(null);
 
-/** Handle file open from SFTP sidebar — loads mock content for now. */
+const commandPalette = ref<InstanceType<typeof CommandPalette> | null>(null);
+const themePicker = ref<InstanceType<typeof ThemePicker> | null>(null);
+const importDialog = ref<InstanceType<typeof ImportDialog> | null>(null);
+const statusBar = ref<InstanceType<typeof StatusBar> | null>(null);
+
+/** Handle file open from SFTP sidebar -- loads mock content for now. */
 function handleOpenFile(entry: FileEntry): void {
   if (!sessionStore.activeSession) return;
 
-  // TODO: Replace with Wails binding call — SFTPService.ReadFile(sessionId, entry.path)
+  // TODO: Replace with Wails binding call -- SFTPService.ReadFile(sessionId, entry.path)
   // Mock file content for development
   const mockContent = `# ${entry.name}\n\n` +
     `# File: ${entry.path}\n` +
@@ -138,4 +178,87 @@ function handleOpenFile(entry: FileEntry): void {
     sessionId: sessionStore.activeSession.id,
   };
 }
+
+/** Handle theme selection from the ThemePicker. */
+function handleThemeSelect(theme: ThemeDefinition): void {
+  statusBar.value?.setThemeName(theme.name);
+}
+
+/**
+ * Quick Connect: parse user@host:port and open a session.
+ * Default protocol: SSH, default port: 22.
+ * If port is 3389, use RDP.
+ */
+function handleQuickConnect(): void {
+  const raw = quickConnectInput.value.trim();
+  if (!raw) return;
+
+  let username = "";
+  let hostname = "";
+  let port = 22;
+  let protocol: "ssh" | "rdp" = "ssh";
+
+  let hostPart = raw;
+
+  // Extract username if present (user@...)
+  const atIdx = raw.indexOf("@");
+  if (atIdx > 0) {
+    username = raw.substring(0, atIdx);
+    hostPart = raw.substring(atIdx + 1);
+  }
+
+  // Extract port if present (...:port)
+  const colonIdx = hostPart.lastIndexOf(":");
+  if (colonIdx > 0) {
+    const portStr = hostPart.substring(colonIdx + 1);
+    const parsedPort = parseInt(portStr, 10);
+    if (!isNaN(parsedPort) && parsedPort > 0 && parsedPort <= 65535) {
+      port = parsedPort;
+      hostPart = hostPart.substring(0, colonIdx);
+    }
+  }
+
+  hostname = hostPart;
+  if (!hostname) return;
+
+  // Auto-detect RDP by port
+  if (port === 3389) {
+    protocol = "rdp";
+  }
+
+  // Create a temporary connection and session
+  // TODO: Replace with Wails binding — create ephemeral session via SSHService.Connect / RDPService.Connect
+  const tempId = Math.max(...connectionStore.connections.map((c) => c.id), 0) + 1;
+  const name = username ? `${username}@${hostname}` : hostname;
+
+  connectionStore.connections.push({
+    id: tempId,
+    name,
+    hostname,
+    port,
+    protocol,
+    groupId: 1,
+    tags: [],
+  });
+
+  sessionStore.connect(tempId);
+  quickConnectInput.value = "";
+}
+
+/** Global keyboard shortcut handler. */
+function handleKeydown(event: KeyboardEvent): void {
+  // Ctrl+K or Cmd+K — open command palette
+  if ((event.ctrlKey || event.metaKey) && event.key === "k") {
+    event.preventDefault();
+    commandPalette.value?.toggle();
+  }
+}
+
+onMounted(() => {
+  document.addEventListener("keydown", handleKeydown);
+});
+
+onUnmounted(() => {
+  document.removeEventListener("keydown", handleKeydown);
+});
 </script>