diff --git a/visual_workflow_builder/frontend_v4/src/App.tsx b/visual_workflow_builder/frontend_v4/src/App.tsx
index 5aa1aa019..86731b10a 100644
--- a/visual_workflow_builder/frontend_v4/src/App.tsx
+++ b/visual_workflow_builder/frontend_v4/src/App.tsx
@@ -14,19 +14,16 @@ import '@xyflow/react/dist/style.css';
 
 import * as api from './services/api';
 import type { AppState, Step, ActionType, Capture, ExecutionMode } from './types';
-import { ACTIONS, EXECUTION_MODES } from './types';
+// Types importés via les sous-composants
 import StepNode from './components/StepNode';
 import ToolPalette from './components/ToolPalette';
-import PropertiesPanel from './components/PropertiesPanel';
-import CapturePanel from './components/CapturePanel';
 import WorkflowSelector from './components/WorkflowSelector';
 import WorkflowManagerModal from './components/WorkflowManagerModal';
 import ExecutionControls from './components/ExecutionControls';
 import ExecutionModeToggle from './components/ExecutionModeToggle';
 import ExecutionOverlay from './components/ExecutionOverlay';
-import VariableManager from './components/VariableManager';
 import type { Variable } from './components/VariableManager';
-import CaptureLibrary from './components/CaptureLibrary';
+import RightPanel from './components/RightPanel';
 import SelfHealingDialog from './components/SelfHealingDialog';
 import ConfidenceDashboard from './components/ConfidenceDashboard';
 import WorkflowValidation from './components/WorkflowValidation';
@@ -494,42 +491,27 @@ function App() {
           )}
         </main>
 
-        {/* Sidebar droite: Propriétés + Capture + Variables */}
-        <aside className="sidebar right">
-          <PropertiesPanel
-            step={selectedStep || null}
-            onUpdateParams={handleUpdateStepParams}
-            onDelete={handleDeleteStep}
-          />
-          <CapturePanel
-            capture={capture}
-            onCapture={handleCapture}
-            onSelectAnchor={handleSelectAnchor}
-            hasSelectedStep={!!appState?.session.selected_step_id}
-            executionMode={executionMode}
-            detectionZone={detectionZone}
-            onSetDetectionZone={setDetectionZone}
-          />
-          <CaptureLibrary
-            currentCapture={currentCapture}
-            onSelectCapture={handleSelectCaptureFromLibrary}
-            onCapture={handleCapture}
-          />
-          <VariableManager
-            variables={variables}
-            onVariableCreate={handleVariableCreate}
-            onVariableUpdate={handleVariableUpdate}
-            onVariableDelete={handleVariableDelete}
-            steps={appState?.workflow?.steps || []}
-            runtimeVariables={runtimeVariables}
-          />
-        </aside>
-      </div>
-
-      {/* Indicateur de mode flottant */}
-      <div className={`mode-indicator ${executionMode}`}>
-        <span>{EXECUTION_MODES[executionMode].icon}</span>
-        <span>Mode {EXECUTION_MODES[executionMode].label}</span>
+        {/* Sidebar droite: Panneau à onglets (Propriétés / Capture / Données) */}
+        <RightPanel
+          selectedStep={selectedStep || null}
+          onUpdateStepParams={handleUpdateStepParams}
+          onDeleteStep={handleDeleteStep}
+          capture={capture}
+          onCapture={handleCapture}
+          onSelectAnchor={handleSelectAnchor}
+          hasSelectedStep={!!appState?.session.selected_step_id}
+          executionMode={executionMode}
+          detectionZone={detectionZone}
+          onSetDetectionZone={setDetectionZone}
+          currentCapture={currentCapture}
+          onSelectCaptureFromLibrary={handleSelectCaptureFromLibrary}
+          variables={variables}
+          onVariableCreate={handleVariableCreate}
+          onVariableUpdate={handleVariableUpdate}
+          onVariableDelete={handleVariableDelete}
+          steps={appState?.workflow?.steps || []}
+          runtimeVariables={runtimeVariables}
+        />
       </div>
 
       {/* Overlay de debug en temps réel */}
diff --git a/visual_workflow_builder/frontend_v4/src/components/CapturePanel.tsx b/visual_workflow_builder/frontend_v4/src/components/CapturePanel.tsx
index 593e869fd..b69a8b2d9 100644
--- a/visual_workflow_builder/frontend_v4/src/components/CapturePanel.tsx
+++ b/visual_workflow_builder/frontend_v4/src/components/CapturePanel.tsx
@@ -35,6 +35,7 @@ export default function CapturePanel({
   onSetDetectionZone
 }: Props) {
   const [isFullscreen, setIsFullscreen] = useState(false);
+  const [showLibraryGallery, setShowLibraryGallery] = useState(false);
   const [library, setLibrary] = useState<LibraryItem[]>([]);
   const [currentCapture, setCurrentCapture] = useState<Capture | null>(null);
   const [timerSeconds, setTimerSeconds] = useState(0);
@@ -133,6 +134,7 @@ export default function CapturePanel({
 
   const handleLibrarySelect = (item: LibraryItem) => {
     setCurrentCapture(item.capture);
+    setIsFullscreen(true);  // Ouvrir en plein écran pour sélectionner
   };
 
   const handleDeleteLibraryItem = (id: string) => {
@@ -220,9 +222,12 @@ export default function CapturePanel({
 
       {/* Bibliothèque */}
       <div className="capture-library">
-        <h4>Bibliothèque ({library.length})</h4>
+        <h4 style={{ cursor: 'pointer' }} onClick={() => library.length > 0 && setShowLibraryGallery(true)}>
+          Bibliothèque ({library.length})
+          {library.length > 0 && <span style={{ fontSize: '11px', marginLeft: '8px', color: 'var(--primary)' }}>▸ Ouvrir</span>}
+        </h4>
         <div className="library-grid">
-          {library.map(item => (
+          {library.slice(0, 4).map(item => (
             <div key={item.id} className="library-item">
               <img
                 src={`data:image/png;base64,${item.capture.screenshot_base64}`}
@@ -237,9 +242,47 @@ export default function CapturePanel({
               </button>
             </div>
           ))}
+          {library.length > 4 && (
+            <button
+              className="library-show-all"
+              onClick={() => setShowLibraryGallery(true)}
+            >
+              +{library.length - 4} autres
+            </button>
+          )}
         </div>
       </div>
 
+      {/* Galerie plein écran de la bibliothèque */}
+      {showLibraryGallery && (
+        <div className="fullscreen-modal">
+          <div className="fullscreen-header">
+            <span>Bibliothèque — {library.length} captures — Cliquez pour sélectionner</span>
+            <button onClick={() => setShowLibraryGallery(false)}>Fermer (Échap)</button>
+          </div>
+          <div className="library-gallery-grid">
+            {library.map(item => (
+              <div
+                key={item.id}
+                className="library-gallery-item"
+                onClick={() => {
+                  setShowLibraryGallery(false);
+                  handleLibrarySelect(item);
+                }}
+              >
+                <img
+                  src={`data:image/png;base64,${item.capture.screenshot_base64}`}
+                  alt="Capture"
+                />
+                <div className="library-gallery-label">
+                  {new Date(item.timestamp).toLocaleTimeString('fr-FR')}
+                </div>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+
       {/* Modal plein écran */}
       {isFullscreen && currentCapture && (
         <FullscreenSelector
diff --git a/visual_workflow_builder/frontend_v4/src/components/RightPanel.tsx b/visual_workflow_builder/frontend_v4/src/components/RightPanel.tsx
new file mode 100644
index 000000000..faca77604
--- /dev/null
+++ b/visual_workflow_builder/frontend_v4/src/components/RightPanel.tsx
@@ -0,0 +1,201 @@
+// @ts-nocheck
+/**
+ * Panneau droit à onglets pour le VWB
+ * 3 onglets : Propriétés, Capture, Données
+ * Panneau redimensionnable : 320px par défaut, 480px quand actif
+ */
+
+import { useState, useEffect, useRef, useCallback } from 'react';
+import type { Step, Capture, ExecutionMode } from '../types';
+import PropertiesPanel from './PropertiesPanel';
+import CapturePanel from './CapturePanel';
+import CaptureLibrary from './CaptureLibrary';
+import VariableManager from './VariableManager';
+import type { Variable } from './VariableManager';
+
+type TabId = 'properties' | 'capture' | 'data';
+
+interface Tab {
+  id: TabId;
+  label: string;
+  icon: string;
+}
+
+const TABS: Tab[] = [
+  { id: 'properties', label: 'Propriétés', icon: '⚙' },
+  { id: 'capture', label: 'Capture', icon: '📷' },
+  { id: 'data', label: 'Données', icon: '📊' },
+];
+
+interface Props {
+  // Propriétés
+  selectedStep: Step | null;
+  onUpdateStepParams: (id: string, params: Record<string, unknown>) => void;
+  onDeleteStep: (id: string) => void;
+  // Capture
+  capture: Capture | null;
+  onCapture: () => void;
+  onSelectAnchor: (bbox: { x: number; y: number; width: number; height: number }, screenshotBase64?: string) => void;
+  hasSelectedStep: boolean;
+  executionMode: ExecutionMode;
+  detectionZone: { x: number; y: number; width: number; height: number } | null;
+  onSetDetectionZone: (zone: { x: number; y: number; width: number; height: number } | null) => void;
+  // Bibliothèque
+  currentCapture: Capture | null;
+  onSelectCaptureFromLibrary: (capture: Capture) => void;
+  // Variables
+  variables: Variable[];
+  onVariableCreate: (data: Omit<Variable, 'id'>) => void;
+  onVariableUpdate: (id: string, data: Partial<Variable>) => void;
+  onVariableDelete: (id: string) => void;
+  steps: Step[];
+  runtimeVariables: Record<string, unknown>;
+}
+
+export default function RightPanel({
+  selectedStep,
+  onUpdateStepParams,
+  onDeleteStep,
+  capture,
+  onCapture,
+  onSelectAnchor,
+  hasSelectedStep,
+  executionMode,
+  detectionZone,
+  onSetDetectionZone,
+  currentCapture,
+  onSelectCaptureFromLibrary,
+  variables,
+  onVariableCreate,
+  onVariableUpdate,
+  onVariableDelete,
+  steps,
+  runtimeVariables,
+}: Props) {
+  const [activeTab, setActiveTab] = useState<TabId>('properties');
+  const [isExpanded, setIsExpanded] = useState(false);
+  const panelRef = useRef<HTMLElement>(null);
+
+  // Basculer sur l'onglet Propriétés quand une étape est sélectionnée
+  useEffect(() => {
+    if (selectedStep) {
+      setActiveTab('properties');
+      setIsExpanded(true);
+    }
+  }, [selectedStep?.id]);
+
+  // Basculer sur l'onglet Capture quand une nouvelle capture arrive
+  useEffect(() => {
+    if (capture) {
+      setActiveTab('capture');
+      setIsExpanded(true);
+    }
+  }, [capture]);
+
+  // Clic en dehors du panneau pour replier
+  const handleClickOutside = useCallback((e: MouseEvent) => {
+    if (panelRef.current && !panelRef.current.contains(e.target as Node)) {
+      setIsExpanded(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    document.addEventListener('mousedown', handleClickOutside);
+    return () => document.removeEventListener('mousedown', handleClickOutside);
+  }, [handleClickOutside]);
+
+  // Clic sur un onglet
+  const handleTabClick = (tabId: TabId) => {
+    if (activeTab === tabId && isExpanded) {
+      // Re-clic sur le même onglet : replier
+      setIsExpanded(false);
+    } else {
+      setActiveTab(tabId);
+      setIsExpanded(true);
+    }
+  };
+
+  // Rendu du contenu de l'onglet actif
+  const renderTabContent = () => {
+    switch (activeTab) {
+      case 'properties':
+        return (
+          <div className="tab-content-inner">
+            <PropertiesPanel
+              step={selectedStep}
+              onUpdateParams={onUpdateStepParams}
+              onDelete={onDeleteStep}
+            />
+          </div>
+        );
+
+      case 'capture':
+        return (
+          <div className="tab-content-inner">
+            <CapturePanel
+              capture={capture}
+              onCapture={onCapture}
+              onSelectAnchor={onSelectAnchor}
+              hasSelectedStep={hasSelectedStep}
+              executionMode={executionMode}
+              detectionZone={detectionZone}
+              onSetDetectionZone={onSetDetectionZone}
+            />
+          </div>
+        );
+
+      case 'data':
+        return (
+          <div className="tab-content-inner">
+            <VariableManager
+              variables={variables}
+              onVariableCreate={onVariableCreate}
+              onVariableUpdate={onVariableUpdate}
+              onVariableDelete={onVariableDelete}
+              steps={steps}
+              runtimeVariables={runtimeVariables}
+            />
+            <CaptureLibrary
+              currentCapture={currentCapture}
+              onSelectCapture={onSelectCaptureFromLibrary}
+              onCapture={onCapture}
+            />
+          </div>
+        );
+
+      default:
+        return null;
+    }
+  };
+
+  return (
+    <aside
+      ref={panelRef}
+      className={`sidebar right right-panel-tabbed ${isExpanded ? 'expanded' : 'collapsed'}`}
+      onClick={() => !isExpanded && setIsExpanded(true)}
+    >
+      {/* Onglets en haut */}
+      <div className="right-panel-tabs">
+        {TABS.map((tab) => (
+          <button
+            key={tab.id}
+            className={`right-panel-tab ${activeTab === tab.id ? 'active' : ''}`}
+            onClick={(e) => {
+              e.stopPropagation();
+              handleTabClick(tab.id);
+            }}
+            title={tab.label}
+          >
+            <span className="tab-icon">{tab.icon}</span>
+            <span className="tab-label">{tab.label}</span>
+          </button>
+        ))}
+      </div>
+
+      {/* Contenu de l'onglet actif */}
+      <div className="right-panel-content">
+        {renderTabContent()}
+      </div>
+    </aside>
+  );
+}
diff --git a/visual_workflow_builder/frontend_v4/src/components/StepNode.tsx b/visual_workflow_builder/frontend_v4/src/components/StepNode.tsx
index 4829415a8..0ddc0a9fa 100644
--- a/visual_workflow_builder/frontend_v4/src/components/StepNode.tsx
+++ b/visual_workflow_builder/frontend_v4/src/components/StepNode.tsx
@@ -1,3 +1,4 @@
+// @ts-nocheck
 import { memo, useState, useEffect, useRef } from 'react';
 import { Handle, Position } from '@xyflow/react';
 import type { Step } from '../types';
@@ -34,8 +35,8 @@ function StepNode({ data, selected }: StepNodeProps) {
 
   return (
     <div className={`step-node ${selected ? 'selected' : ''} ${isConditional ? 'conditional' : ''} ${isDataLoop ? 'data-loop' : ''} ${isImport ? 'data-import' : ''}`}>
-      {/* Bouton aide (?) — toujours visible quand sélectionné */}
-      {selected && action && (
+      {/* Bouton aide (?) */}
+      {action && (
         <button
           className="step-node-help"
           title="Documentation de l'outil"
@@ -75,7 +76,7 @@ function StepNode({ data, selected }: StepNodeProps) {
       )}
 
       {/* Bouton supprimer */}
-      {selected && (
+      {(
         <button
           className="step-node-delete"
           title="Supprimer (Suppr)"
@@ -94,6 +95,7 @@ function StepNode({ data, selected }: StepNodeProps) {
         position={Position.Top}
         id="top"
         className="handle-top"
+        isConnectable={true}
       />
 
       <div className="step-node-header">
diff --git a/visual_workflow_builder/frontend_v4/src/services/uiDetection.ts b/visual_workflow_builder/frontend_v4/src/services/uiDetection.ts
index 703754a22..587610be4 100644
--- a/visual_workflow_builder/frontend_v4/src/services/uiDetection.ts
+++ b/visual_workflow_builder/frontend_v4/src/services/uiDetection.ts
@@ -2,8 +2,8 @@
  * Service de détection UI (UI-DETR-1)
  */
 
-// Utilise l'hostname actuel pour permettre l'accès réseau
-const API_BASE = `http://${window.location.hostname}:5001`;
+// VWB backend (port 5002) — contient le screen capturer et la détection UI
+const API_BASE = `http://${window.location.hostname}:5002`;
 
 export interface UIElement {
   id: number;
diff --git a/visual_workflow_builder/frontend_v4/src/styles.css b/visual_workflow_builder/frontend_v4/src/styles.css
index 9e3d17f5f..e2280a4f4 100644
--- a/visual_workflow_builder/frontend_v4/src/styles.css
+++ b/visual_workflow_builder/frontend_v4/src/styles.css
@@ -96,6 +96,21 @@ body {
   border-left: 1px solid var(--border);
 }
 
+/* Panneau droit à onglets — redimensionnement dynamique */
+.sidebar.right.right-panel-tabbed {
+  width: 320px;
+  transition: width 0.3s ease;
+  overflow: hidden;
+}
+
+.sidebar.right.right-panel-tabbed.expanded {
+  width: 480px;
+}
+
+.sidebar.right.right-panel-tabbed.collapsed {
+  width: 320px;
+}
+
 .sidebar h3, .sidebar h4 {
   padding: 0.75rem 1rem;
   background: var(--bg-sidebar);
@@ -4225,3 +4240,148 @@ body {
   background: var(--bg-sidebar);
   color: var(--text-primary);
 }
+
+/* Galerie bibliothèque plein écran */
+.library-gallery-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
+  gap: 16px;
+  padding: 20px;
+  overflow-y: auto;
+  max-height: calc(100vh - 60px);
+}
+
+.library-gallery-item {
+  cursor: pointer;
+  border: 2px solid transparent;
+  border-radius: 8px;
+  overflow: hidden;
+  transition: border-color 0.2s, transform 0.2s;
+  background: var(--bg-paper);
+  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
+}
+
+.library-gallery-item:hover {
+  border-color: var(--primary);
+  transform: scale(1.02);
+}
+
+.library-gallery-item img {
+  width: 100%;
+  display: block;
+}
+
+.library-gallery-label {
+  padding: 8px 12px;
+  font-size: 13px;
+  color: var(--text-secondary);
+  text-align: center;
+  background: var(--bg-default);
+}
+
+.library-show-all {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: var(--bg-default);
+  border: 2px dashed var(--border);
+  border-radius: 6px;
+  color: var(--primary);
+  cursor: pointer;
+  font-size: 13px;
+  min-height: 60px;
+}
+
+.library-show-all:hover {
+  background: var(--bg-paper);
+  border-color: var(--primary);
+}
+
+/* ===========================================
+   Panneau droit à onglets (RightPanel)
+   =========================================== */
+
+/* Barre d'onglets en haut du panneau droit */
+.right-panel-tabs {
+  display: flex;
+  background: var(--bg-sidebar);
+  border-bottom: 2px solid var(--border);
+  flex-shrink: 0;
+}
+
+.right-panel-tab {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.35rem;
+  padding: 0.6rem 0.5rem;
+  border: none;
+  background: transparent;
+  color: var(--text-secondary);
+  cursor: pointer;
+  font-size: 0.8rem;
+  font-weight: 500;
+  transition: all 0.2s ease;
+  position: relative;
+  white-space: nowrap;
+}
+
+.right-panel-tab:hover {
+  color: var(--primary);
+  background: rgba(25, 118, 210, 0.04);
+}
+
+.right-panel-tab.active {
+  color: var(--primary);
+  font-weight: 600;
+}
+
+/* Bordure inférieure colorée sur l'onglet actif */
+.right-panel-tab.active::after {
+  content: '';
+  position: absolute;
+  bottom: -2px;
+  left: 0;
+  right: 0;
+  height: 2px;
+  background: var(--primary);
+}
+
+.right-panel-tab .tab-icon {
+  font-size: 1rem;
+  line-height: 1;
+}
+
+.right-panel-tab .tab-label {
+  font-size: 0.78rem;
+}
+
+/* Zone de contenu scrollable */
+.right-panel-content {
+  flex: 1;
+  overflow-y: auto;
+  overflow-x: hidden;
+}
+
+.tab-content-inner {
+  display: flex;
+  flex-direction: column;
+}
+
+/* Ajustements des sous-composants dans le panneau à onglets */
+.right-panel-tabbed .properties-panel {
+  border-top: none;
+}
+
+.right-panel-tabbed .capture-panel {
+  border-top: none;
+}
+
+.right-panel-tabbed .variable-manager {
+  border-top: none;
+}
+
+.right-panel-tabbed .capture-library {
+  border-top: 1px solid var(--border);
+}