feat: connection status indicators + draggable tab reordering

Status indicators:
- Session.status field tracks connected/disconnected state
- Listens for ssh:close and ssh:exit backend events
- Tab dot turns red when connection drops (green=SSH, blue=RDP, red=dead)

Draggable tabs:
- HTML5 drag-and-drop on tab buttons
- Blue left-border indicator shows drop target
- moveSession() in store reorders the sessions array

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

src/components/session/TabBadge.vue

@@ -36,12 +36,15 @@ const props = defineProps<{
   username?: string;
   /** Raw tags from the connection record. */
   tags?: string[];
+  /** Connection status — drives the dot colour. */
+  status?: "connected" | "disconnected";
 }>();
 
-/** Green for SSH, blue for RDP. */
+/** Green=connected SSH, blue=connected RDP, red=disconnected. */
-const protocolDotClass = computed(() =>
+const protocolDotClass = computed(() => {
-  props.protocol === "ssh" ? "bg-[#3fb950]" : "bg-[#1f6feb]",
+  if (props.status === "disconnected") return "bg-[#f85149]";
-);
+  return props.protocol === "ssh" ? "bg-[#3fb950]" : "bg-[#1f6feb]";
+});
 
 /** True when the session is running as root or Administrator. */
 const isRoot = computed(() => {

src/components/session/TabBar.vue

@@ -3,22 +3,30 @@
     <!-- Tabs -->
     <div class="flex items-center overflow-x-auto min-w-0">
       <button
-        v-for="session in sessionStore.sessions"
+        v-for="(session, index) in sessionStore.sessions"
         :key="session.id"
+        draggable="true"
         class="group flex items-center gap-1.5 px-3 h-9 text-xs whitespace-nowrap border-r border-[var(--wraith-border)] transition-all duration-500 cursor-pointer shrink-0"
         :class="[
           session.id === sessionStore.activeSessionId
             ? 'bg-[var(--wraith-bg-primary)] text-[var(--wraith-text-primary)] border-b-2 border-b-[var(--wraith-accent-blue)]'
             : 'text-[var(--wraith-text-muted)] hover:text-[var(--wraith-text-secondary)] hover:bg-[var(--wraith-bg-tertiary)]',
           isRootUser(session) ? 'border-t-2 border-t-[#f8514966]' : '',
+          dragOverIndex === index ? 'border-l-2 border-l-[var(--wraith-accent-blue)]' : '',
         ]"
         @click="sessionStore.activateSession(session.id)"
+        @dragstart="onDragStart(index, $event)"
+        @dragover.prevent="onDragOver(index)"
+        @dragleave="dragOverIndex = -1"
+        @drop.prevent="onDrop(index)"
+        @dragend="draggedIndex = -1; dragOverIndex = -1"
       >
         <!-- Badge: protocol dot + root dot + env pills -->
         <TabBadge
           :protocol="session.protocol"
           :username="session.username"
           :tags="getSessionTags(session)"
+          :status="session.status"
         />
 
         <span>{{ session.name }}</span>
@@ -44,6 +52,7 @@
 </template>
 
 <script setup lang="ts">
+import { ref } from "vue";
 import { useSessionStore, type Session } from "@/stores/session.store";
 import { useConnectionStore } from "@/stores/connection.store";
 import TabBadge from "@/components/session/TabBadge.vue";
@@ -51,6 +60,31 @@ import TabBadge from "@/components/session/TabBadge.vue";
 const sessionStore = useSessionStore();
 const connectionStore = useConnectionStore();
 
+// Drag-and-drop tab reordering
+const draggedIndex = ref(-1);
+const dragOverIndex = ref(-1);
+
+function onDragStart(index: number, event: DragEvent): void {
+  draggedIndex.value = index;
+  if (event.dataTransfer) {
+    event.dataTransfer.effectAllowed = "move";
+  }
+}
+
+function onDragOver(index: number): void {
+  if (draggedIndex.value !== -1 && draggedIndex.value !== index) {
+    dragOverIndex.value = index;
+  }
+}
+
+function onDrop(toIndex: number): void {
+  if (draggedIndex.value !== -1 && draggedIndex.value !== toIndex) {
+    sessionStore.moveSession(draggedIndex.value, toIndex);
+  }
+  draggedIndex.value = -1;
+  dragOverIndex.value = -1;
+}
+
 /** Get tags for a session's underlying connection. */
 function getSessionTags(session: Session): string[] {
   const conn = connectionStore.connections.find((c) => c.id === session.connectionId);

src/stores/session.store.ts

@@ -1,6 +1,7 @@
 import { defineStore } from "pinia";
 import { ref, computed } from "vue";
 import { invoke } from "@tauri-apps/api/core";
+import { listen } from "@tauri-apps/api/event";
 import { useConnectionStore } from "@/stores/connection.store";
 import type { ThemeDefinition } from "@/components/common/ThemePicker.vue";
 
@@ -11,6 +12,7 @@ export interface Session {
   protocol: "ssh" | "rdp";
   active: boolean;
   username?: string;
+  status: "connected" | "disconnected";
 }
 
 export interface TerminalDimensions {
@@ -36,10 +38,30 @@ export const useSessionStore = defineStore("session", () => {
 
   const sessionCount = computed(() => sessions.value.length);
 
+  // Listen for backend close/exit events to update session status
+  function setupStatusListeners(sessionId: string): void {
+    listen(`ssh:close:${sessionId}`, () => markDisconnected(sessionId));
+    listen(`ssh:exit:${sessionId}`, () => markDisconnected(sessionId));
+  }
+
+  function markDisconnected(sessionId: string): void {
+    const session = sessions.value.find((s) => s.id === sessionId);
+    if (session) session.status = "disconnected";
+  }
+
   function activateSession(id: string): void {
     activeSessionId.value = id;
   }
 
+  /** Reorder sessions by moving a tab from one index to another. */
+  function moveSession(fromIndex: number, toIndex: number): void {
+    if (fromIndex === toIndex) return;
+    if (fromIndex < 0 || toIndex < 0) return;
+    if (fromIndex >= sessions.value.length || toIndex >= sessions.value.length) return;
+    const [moved] = sessions.value.splice(fromIndex, 1);
+    sessions.value.splice(toIndex, 0, moved);
+  }
+
   async function closeSession(id: string): Promise<void> {
     const idx = sessions.value.findIndex((s) => s.id === id);
     if (idx === -1) return;
@@ -130,7 +152,9 @@ export const useSessionStore = defineStore("session", () => {
                   protocol: "ssh",
                   active: true,
                   username: resolvedUsername,
+                  status: "connected",
                 });
+                setupStatusListeners(sessionId);
                 activeSessionId.value = sessionId;
                 return; // early return — key auth handled
               } else {
@@ -192,7 +216,9 @@ export const useSessionStore = defineStore("session", () => {
           protocol: "ssh",
           active: true,
           username: resolvedUsername,
+          status: "connected",
         });
+        setupStatusListeners(sessionId);
         activeSessionId.value = sessionId;
       } else if (conn.protocol === "rdp") {
         let username = "";
@@ -274,6 +300,7 @@ export const useSessionStore = defineStore("session", () => {
           protocol: "rdp",
           active: true,
           username,
+          status: "connected",
         });
         activeSessionId.value = sessionId;
       }
@@ -317,6 +344,7 @@ export const useSessionStore = defineStore("session", () => {
     activateSession,
     closeSession,
     connect,
+    moveSession,
     setTheme,
     setTerminalDimensions,
   };