fix: SFTP list not sent + RDP connect button does nothing

SFTP: Added console logging to diagnose, plus a watcher that sends
the pending list when sessionId becomes available (covers the race
where WS opens before sessionId is set).

RDP: connectHost() was returning early for non-SSH protocols.
Removed the guard and use host.protocol instead of hardcoded 'ssh'.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/composables/useSftp.ts

@@ -1,4 +1,4 @@
-import { ref, type Ref } from 'vue'
+import { ref, watch, type Ref } from 'vue'
 import { useAuthStore } from '~/stores/auth.store'
 
 export function useSftp(sessionId: Ref<string | null>) {
@@ -16,9 +16,17 @@ export function useSftp(sessionId: Ref<string | null>) {
     ws = new WebSocket(wsUrl)
 
     ws.onopen = () => {
+      console.log('[SFTP] WS open, sessionId=', sessionId.value, 'pendingList=', pendingList)
       if (pendingList !== null) {
-        send({ type: 'list', path: pendingList })
+        // Send directly — don't rely on send() guard since we know WS is open
+        const path = pendingList
         pendingList = null
+        if (sessionId.value) {
+          ws!.send(JSON.stringify({ type: 'list', path, sessionId: sessionId.value }))
+        } else {
+          console.warn('[SFTP] No sessionId available yet, cannot list')
+          pendingList = path // put it back
+        }
       }
     }
 
@@ -72,6 +80,15 @@ export function useSftp(sessionId: Ref<string | null>) {
   function chmod(path: string, mode: string) { send({ type: 'chmod', path, mode }) }
   function download(path: string) { send({ type: 'download', path }) }
 
+  // If sessionId arrives after WS is already open, send any pending list
+  watch(sessionId, (newId) => {
+    if (newId && pendingList !== null && ws?.readyState === WebSocket.OPEN) {
+      const path = pendingList
+      pendingList = null
+      ws!.send(JSON.stringify({ type: 'list', path, sessionId: newId }))
+    }
+  })
+
   function disconnect() {
     ws?.close()
     ws = null

frontend/pages/index.vue

@@ -85,16 +85,13 @@ function closeDetails() {
 }
 
 function connectHost(host: any) {
-  if (host.protocol !== 'ssh') {
-    return
-  }
   const pendingId = `pending-${Date.now()}`
   sessions.addSession({
     key: pendingId,
     id: pendingId,
     hostId: host.id,
     hostName: host.name,
-    protocol: 'ssh',
+    protocol: host.protocol,
     color: host.color,
     active: true,
   })