diff --git a/diagnostic/index.html b/diagnostic/index.html
index b5d5521..5726be1 100644
--- a/diagnostic/index.html
+++ b/diagnostic/index.html
@@ -320,6 +320,7 @@
       </div>
       <div id="diag-pending-attachments" style="display:none;padding:6px 10px;background:#1E1E2E;border-radius:6px 6px 0 0;margin-bottom:-4px;display:flex;gap:6px;flex-wrap:wrap;align-items:center;">
       </div>
+      <div id="diag-queue-banner" style="display:none;padding:6px 10px;background:#2A2410;border:1px solid #4A3F14;border-radius:6px;margin-bottom:6px;"></div>
       <div class="input-row">
         <label class="btn secondary" style="padding:6px 10px;cursor:pointer;font-size:14px;" title="Datei anhaengen">
           &#x1F4CE;
@@ -1425,6 +1426,12 @@
     let diagQueueStatus = {};
     let diagProjectsCache = [];
     let diagShowHiddenStrip = false;   // versteckte Projekte im Streifen zeigen?
+    // ── Pro-Kontext-Queue + Zustandsautomat (spiegelt die App) ──
+    const diagCtxStates = {};   // pid → 'idle' | 'running' | 'awaiting_reply'
+    const diagCtxQueues = {};   // pid → [{id,text}]
+    const diagDrafts = JSON.parse(localStorage.getItem('diag_ctx_drafts') || '{}');
+    let diagQid = 0;
+    const diagState = (pid) => diagCtxStates[pid] || 'idle';
 
     function updateChatVisibilityByFocus() {
       for (const box of [chatBox, document.getElementById('chat-box-fs')]) {
@@ -1438,10 +1445,22 @@
     }
 
     function switchDiagFocus(id) {
-      focusedContextId = id || '';
+      const nextId = id || '';
+      // Pro-Kontext-Textfeld-Entwuerfe: Feldinhalt dem verlassenen Kontext
+      // zuordnen, Entwurf des neuen laden.
+      if (nextId !== focusedContextId) {
+        const input = document.getElementById('chat-input');
+        if (input) {
+          diagDrafts[focusedContextId] = input.value;
+          input.value = diagDrafts[nextId] || '';
+        }
+        localStorage.setItem('diag_ctx_drafts', JSON.stringify(diagDrafts));
+      }
+      focusedContextId = nextId;
       localStorage.setItem('diag_focused_context_id', focusedContextId);
       updateChatVisibilityByFocus();
       renderContextStrip();
+      renderDiagQueue();
     }
 
     function renderContextStrip() {
@@ -1983,6 +2002,15 @@
             projectId: p.projectId || '',
             answeredBy: p.answeredBy || '',
           });
+          // ── Pro-Kontext-Queue-Automat: auf ARIAs Antwort reagieren ──
+          if (sender === 'aria') {
+            const apid = p.projectId || '';
+            const st = diagState(apid);
+            if (st === 'running' || st === 'awaiting_reply') {
+              if (p.awaiting_reply) { diagCtxStates[apid] = 'awaiting_reply'; renderDiagQueue(); }
+              else advanceDiagQueue(apid);
+            }
+          }
           return;
         }
         if (msg.type === 'chat_message_deleted') {
@@ -2179,16 +2207,64 @@
       renderDiagPending();
     }
 
+    // ── Pro-Kontext-Queue: Helfer (spiegelt die App) ──
+    function actuallySendDiag(pid, text) {
+      addChat('sent', text, 'via RVS', { projectId: pid });
+      send({ action: 'test_rvs', text, projectId: pid });
+      diagCtxStates[pid] = 'running';
+      renderDiagQueue();
+    }
+    function advanceDiagQueue(pid) {
+      const q = diagCtxQueues[pid] || [];
+      if (q.length === 0) { diagCtxStates[pid] = 'idle'; renderDiagQueue(); return; }
+      const next = q.shift();
+      actuallySendDiag(pid, next.text);
+    }
+    function enqueueOrSendDiag(pid, text) {
+      if (diagState(pid) === 'running') {
+        (diagCtxQueues[pid] = diagCtxQueues[pid] || []).push({ id: 'q' + (++diagQid), text });
+        renderDiagQueue();
+      } else {
+        // idle ODER awaiting_reply → sofort (bei awaiting = Antwort auf Rueckfrage).
+        actuallySendDiag(pid, text);
+      }
+    }
+    function removeDiagQueuedFocused(id) {
+      const pid = focusedContextId;
+      diagCtxQueues[pid] = (diagCtxQueues[pid] || []).filter(it => it.id !== id);
+      renderDiagQueue();
+    }
+    function renderDiagQueue() {
+      const el = document.getElementById('diag-queue-banner');
+      if (!el) return;
+      const st = diagState(focusedContextId);
+      const q = diagCtxQueues[focusedContextId] || [];
+      if (st !== 'awaiting_reply' && q.length === 0) { el.style.display = 'none'; el.innerHTML = ''; return; }
+      el.style.display = 'block';
+      let html = '';
+      if (st === 'awaiting_reply') {
+        html += '<div style="color:#FFD60A;font-weight:600;margin-bottom:4px;">&#x2753; ARIA fragt nach &mdash; deine Eingabe beantwortet das</div>';
+      }
+      if (q.length) {
+        html += q.map(it =>
+          '<span style="display:inline-block;background:#1E1E2E;border:1px solid #4A3F14;border-radius:10px;padding:2px 8px;margin:2px;font-size:12px;color:#FFD60A;">&#x23F8; ' +
+          escapeHtml(it.text.slice(0, 40)) +
+          ' <a href="#" style="color:#FF6B6B;text-decoration:none;" onclick="removeDiagQueuedFocused(\'' + it.id + '\');return false;">&#x2715;</a></span>'
+        ).join('');
+      }
+      el.innerHTML = html;
+    }
+
     function testRVS() {
       const input = document.getElementById('chat-input');
       const text = input.value.trim();
       if (!text && diagPendingFiles.length === 0) return;
       if (diagPendingFiles.length > 0) sendDiagAttachments();
       if (text) {
-        // Multi-Threading: mit fokussierter Kontext-ID senden.
-        // Bridge routet an /chat body.project_id — Brain queued per Kontext.
-        addChat('sent', text, 'via RVS', { projectId: focusedContextId });
-        send({ action: 'test_rvs', text, projectId: focusedContextId });
+        // Draft dieses Kontexts leeren + Queue-Automat entscheidet senden/anstellen.
+        diagDrafts[focusedContextId] = '';
+        localStorage.setItem('diag_ctx_drafts', JSON.stringify(diagDrafts));
+        enqueueOrSendDiag(focusedContextId, text);
       }
       input.value = '';
     }
@@ -2675,8 +2751,8 @@
       const input = document.getElementById('chat-input-fs');
       const text = input.value.trim();
       if (!text) return;
-      addChat('sent', text, 'via RVS');
-      send({ action: 'test_rvs', text });
+      // Ueber denselben Queue-Automaten wie der Haupt-Chat (fokussierter Kontext).
+      enqueueOrSendDiag(focusedContextId, text);
       input.value = '';
     }
     // Escape schliesst Vollbild-Chat
@@ -3650,6 +3726,12 @@
     }
     document.getElementById('chat-input').addEventListener('keydown', (e) => chatInputKeydown(e, testRVS));
     document.getElementById('chat-input-fs').addEventListener('keydown', (e) => chatInputKeydown(e, testRVSFS));
+    // Entwurf des zuletzt fokussierten Kontexts ins Feld laden + Queue-Banner init.
+    (function initDiagDraft() {
+      const input = document.getElementById('chat-input');
+      if (input && diagDrafts[focusedContextId]) input.value = diagDrafts[focusedContextId];
+      renderDiagQueue();
+    })();
 
     // Escape schliesst Lightbox
     document.addEventListener('keydown', (e) => {