diff --git a/frontend/src/components/ModeSelector.vue b/frontend/src/components/ModeSelector.vue
index 045e1848..ddd3edc9 100644
--- a/frontend/src/components/ModeSelector.vue
+++ b/frontend/src/components/ModeSelector.vue
@@ -8,9 +8,11 @@
     <div class="mode-cards">
       <!-- Public Mode -->
       <button
+        type="button"
         class="mode-card"
-        :class="{ 'is-selected': selected === 'public' }"
-        @click="select('public')"
+        :class="{ 'is-selected': selected === 'public', 'is-disabled': disabled }"
+        :disabled="disabled"
+        @click="selectMode('public')"
       >
         <div class="card-icon">
           <svg viewBox="0 0 24 24" width="32" height="32" fill="none" stroke="currentColor" stroke-width="1.5">
@@ -38,9 +40,11 @@
 
       <!-- Private Impact Mode -->
       <button
+        type="button"
         class="mode-card mode-card--private"
-        :class="{ 'is-selected': selected === 'private' }"
-        @click="select('private')"
+        :class="{ 'is-selected': selected === 'private', 'is-disabled': disabled }"
+        :disabled="disabled"
+        @click="selectMode('private')"
       >
         <div class="card-icon">
           <svg viewBox="0 0 24 24" width="32" height="32" fill="none" stroke="currentColor" stroke-width="1.5">
@@ -70,14 +74,26 @@
 
 <script setup>
 import { ref } from 'vue'
+import { useRouter } from 'vue-router'
+
+const props = defineProps({
+  projectId: { type: String, default: 'new' },
+  disabled: { type: Boolean, default: false },
+})
 
 const emit = defineEmits(['mode-selected'])
 
 const selected = ref(null)
+const router = useRouter()
 
-const select = (mode) => {
+const selectMode = (mode) => {
+  if (props.disabled) return
   selected.value = mode
   emit('mode-selected', mode)
+  router.push({
+    path: `/process/${props.projectId}`,
+    query: { mode },
+  })
 }
 </script>
 
@@ -121,12 +137,13 @@ const select = (mode) => {
   border-radius: 4px;
   background: #fff;
   cursor: pointer;
-  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
+  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s, opacity 0.18s;
   width: 100%;
   gap: 14px;
+  font-family: inherit;
 }
 
-.mode-card:hover {
+.mode-card:hover:not(.is-disabled) {
   border-color: #000;
   box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
 }
@@ -136,12 +153,17 @@ const select = (mode) => {
   background: #FAFAFA;
 }
 
-.mode-card--private:hover,
+.mode-card--private:hover:not(.is-disabled),
 .mode-card--private.is-selected {
   border-color: #1A1A1A;
   background: #F8F8F8;
 }
 
+.mode-card.is-disabled {
+  cursor: not-allowed;
+  opacity: 0.45;
+}
+
 .card-icon {
   color: #333;
   flex-shrink: 0;
diff --git a/frontend/src/router/index.js b/frontend/src/router/index.js
index 3b1b8b2b..62d23201 100644
--- a/frontend/src/router/index.js
+++ b/frontend/src/router/index.js
@@ -5,7 +5,6 @@ import SimulationView from '../views/SimulationView.vue'
 import SimulationRunView from '../views/SimulationRunView.vue'
 import ReportView from '../views/ReportView.vue'
 import InteractionView from '../views/InteractionView.vue'
-import PrivateImpactView from '../views/PrivateImpactView.vue'
 
 const routes = [
   {
@@ -42,12 +41,6 @@ const routes = [
     name: 'Interaction',
     component: InteractionView,
     props: true
-  },
-  {
-    path: '/private/:projectId',
-    name: 'PrivateImpact',
-    component: PrivateImpactView,
-    props: true
   }
 ]
 
diff --git a/frontend/src/views/Home.vue b/frontend/src/views/Home.vue
index 5cb000dc..2c666b08 100644
--- a/frontend/src/views/Home.vue
+++ b/frontend/src/views/Home.vue
@@ -125,9 +125,6 @@
 
         <!-- 右栏：交互控制台 -->
         <div class="right-panel">
-          <div class="mode-selector-wrapper">
-            <ModeSelector @mode-selected="handleModeSelected" />
-          </div>
           <div class="console-box">
             <!-- 上传区域 -->
             <div class="console-section">
@@ -135,8 +132,8 @@
                 <span class="console-label">{{ $t('home.realitySeed') }}</span>
                 <span class="console-meta">{{ $t('home.supportedFormats') }}</span>
               </div>
-              
-              <div 
+
+              <div
                 class="upload-zone"
                 :class="{ 'drag-over': isDragOver, 'has-files': files.length > 0 }"
                 @dragover.prevent="handleDragOver"
@@ -153,13 +150,13 @@
                   style="display: none"
                   :disabled="loading"
                 />
-                
+
                 <div v-if="files.length === 0" class="upload-placeholder">
                   <div class="upload-icon">↑</div>
                   <div class="upload-title">{{ $t('home.dragToUpload') }}</div>
                   <div class="upload-hint">{{ $t('home.orBrowse') }}</div>
                 </div>
-                
+
                 <div v-else class="file-list">
                   <div v-for="(file, index) in files" :key="index" class="file-item">
                     <span class="file-icon">📄</span>
@@ -192,17 +189,13 @@
               </div>
             </div>
 
-            <!-- 启动按钮 -->
-            <div class="console-section btn-section">
-              <button 
-                class="start-engine-btn"
-                @click="startSimulation"
+            <!-- Mode selector (CTA) -->
+            <div class="console-section mode-selector-section">
+              <ModeSelector
+                projectId="new"
                 :disabled="!canSubmit || loading"
-              >
-                <span v-if="!loading">{{ $t('home.startEngine') }}</span>
-                <span v-else>{{ $t('home.initializing') }}</span>
-                <span class="btn-arrow">→</span>
-              </button>
+                @mode-selected="handleModeSelected"
+              />
             </div>
           </div>
         </div>
@@ -216,19 +209,10 @@
 
 <script setup>
 import { ref, computed } from 'vue'
-import { useRouter } from 'vue-router'
 import HistoryDatabase from '../components/HistoryDatabase.vue'
 import LanguageSwitcher from '../components/LanguageSwitcher.vue'
 import ModeSelector from '../components/ModeSelector.vue'
-
-const router = useRouter()
-
-// Mode sélectionné (public | private)
-const selectedMode = ref(null)
-
-const handleModeSelected = (mode) => {
-  selectedMode.value = mode
-}
+import { setPendingUpload } from '../store/pendingUpload.js'
 
 // 表单数据
 const formData = ref({
@@ -240,7 +224,6 @@ const files = ref([])
 
 // 状态
 const loading = ref(false)
-const error = ref('')
 const isDragOver = ref(false)
 
 // 文件输入引用
@@ -251,6 +234,14 @@ const canSubmit = computed(() => {
   return formData.value.simulationRequirement.trim() !== '' && files.value.length > 0
 })
 
+// ModeSelector prend la main sur la navigation. Son emit `mode-selected` est
+// synchrone et arrive AVANT son `router.push`, ce qui permet de stocker la
+// pending upload avant que MainView ne la lise via getPendingUpload().
+const handleModeSelected = () => {
+  if (!canSubmit.value || loading.value) return
+  setPendingUpload(files.value, formData.value.simulationRequirement)
+}
+
 // 触发文件选择
 const triggerFileInput = () => {
   if (!loading.value) {
@@ -305,22 +296,6 @@ const scrollToBottom = () => {
   })
 }
 
-// 开始模拟 - 立即跳转，API调用在Process页面进行
-const startSimulation = () => {
-  if (!canSubmit.value || loading.value) return
-  
-  // 存储待上传的数据
-  import('../store/pendingUpload.js').then(({ setPendingUpload }) => {
-    setPendingUpload(files.value, formData.value.simulationRequirement)
-    
-    // 立即跳转到Process页面（使用特殊标识表示新建项目）
-    router.push({
-      name: 'Process',
-      params: { projectId: 'new' },
-      query: selectedMode.value === 'private' ? { mode: 'private' } : {},
-    })
-  })
-}
 </script>
 
 <style scoped>
@@ -684,10 +659,6 @@ const startSimulation = () => {
   flex: 1.2;
 }
 
-.mode-selector-wrapper {
-  margin-bottom: 20px;
-}
-
 .console-box {
   border: 1px solid #CCC; /* 外部实线 */
   padding: 8px; /* 内边距形成双重边框感 */
@@ -697,7 +668,7 @@ const startSimulation = () => {
   padding: 20px;
 }
 
-.console-section.btn-section {
+.console-section.mode-selector-section {
   padding-top: 0;
 }
 
@@ -839,57 +810,6 @@ const startSimulation = () => {
   color: #AAA;
 }
 
-.start-engine-btn {
-  width: 100%;
-  background: var(--black);
-  color: var(--white);
-  border: none;
-  padding: 20px;
-  font-family: var(--font-mono);
-  font-weight: 700;
-  font-size: 1.1rem;
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  cursor: pointer;
-  transition: all 0.3s ease;
-  letter-spacing: 1px;
-  position: relative;
-  overflow: hidden;
-}
-
-/* 可点击状态（非禁用） */
-.start-engine-btn:not(:disabled) {
-  background: var(--black);
-  border: 1px solid var(--black);
-  animation: pulse-border 2s infinite;
-}
-
-.start-engine-btn:hover:not(:disabled) {
-  background: var(--orange);
-  border-color: var(--orange);
-  transform: translateY(-2px);
-}
-
-.start-engine-btn:active:not(:disabled) {
-  transform: translateY(0);
-}
-
-.start-engine-btn:disabled {
-  background: #E5E5E5;
-  color: #999;
-  cursor: not-allowed;
-  transform: none;
-  border: 1px solid #E5E5E5;
-}
-
-/* 引导动画：微妙的边框脉冲 */
-@keyframes pulse-border {
-  0% { box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.2); }
-  70% { box-shadow: 0 0 0 6px rgba(0, 0, 0, 0); }
-  100% { box-shadow: 0 0 0 0 rgba(0, 0, 0, 0); }
-}
-
 /* 响应式适配 */
 @media (max-width: 1024px) {
   .dashboard-section {
diff --git a/frontend/src/views/PrivateImpactView.vue b/frontend/src/views/PrivateImpactView.vue
deleted file mode 100644
index b3dbd73e..00000000
--- a/frontend/src/views/PrivateImpactView.vue
+++ /dev/null
@@ -1,2090 +0,0 @@
-<template>
-  <div class="private-view">
-
-    <!-- ── Header ── -->
-    <header class="app-header">
-      <div class="header-left">
-        <div class="brand" @click="router.push('/')">MIROFISH</div>
-      </div>
-      <div class="header-center">
-        <div class="mode-badge">
-          <svg viewBox="0 0 24 24" width="12" height="12" fill="none" stroke="currentColor" stroke-width="2">
-            <rect x="3" y="11" width="18" height="11" rx="2" ry="2" />
-            <path d="M7 11V7a5 5 0 0 1 10 0v4" />
-          </svg>
-          PRIVATE IMPACT
-        </div>
-      </div>
-      <div class="header-right">
-        <LanguageSwitcher />
-        <div class="step-divider"></div>
-        <div class="workflow-step">
-          <span class="step-num">Step {{ currentStep }}/5</span>
-          <span class="step-name">{{ stepNames[currentStep - 1] }}</span>
-        </div>
-        <div class="step-divider"></div>
-        <span class="status-indicator" :class="statusClass">
-          <span class="dot"></span>
-          {{ statusText }}
-        </span>
-      </div>
-    </header>
-
-    <!-- ── Step breadcrumb ── -->
-    <div class="steps-bar">
-      <div
-        v-for="(name, idx) in stepNames"
-        :key="idx"
-        class="step-node"
-        :class="{
-          'is-active': currentStep === idx + 1,
-          'is-done': currentStep > idx + 1,
-        }"
-        @click="currentStep > idx + 1 ? goToStep(idx + 1) : null"
-      >
-        <div class="step-circle">
-          <svg v-if="currentStep > idx + 1" viewBox="0 0 24 24" width="12" height="12" fill="none" stroke="currentColor" stroke-width="3">
-            <polyline points="20 6 9 17 4 12" />
-          </svg>
-          <span v-else>{{ idx + 1 }}</span>
-        </div>
-        <span class="step-node-name">{{ name }}</span>
-        <div v-if="idx < stepNames.length - 1" class="step-connector" :class="{ 'is-done': currentStep > idx + 1 }"></div>
-      </div>
-    </div>
-
-    <!-- ── Error banner ── -->
-    <div v-if="error" class="error-banner">
-      <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2">
-        <circle cx="12" cy="12" r="10" /><line x1="12" y1="8" x2="12" y2="12" /><line x1="12" y1="16" x2="12.01" y2="16" />
-      </svg>
-      {{ error }}
-      <button class="error-close" @click="error = null">×</button>
-    </div>
-
-    <!-- ══════════════════════════════════════════════════════════
-         STEP 1 — Requirement Form
-    ══════════════════════════════════════════════════════════ -->
-    <main v-if="currentStep === 1" class="content-area">
-      <div class="form-container">
-        <div class="section-title-row">
-          <h2 class="section-h2">Define the Decision</h2>
-          <p class="section-hint">Fill in the decision context. These details will drive the simulation.</p>
-        </div>
-
-        <div
-          class="drop-zone"
-          :class="{ 'drop-zone--active': isDragOver }"
-          @dragover.prevent="isDragOver = true"
-          @dragleave="isDragOver = false"
-          @drop.prevent="handleDrop"
-          @click="triggerImport"
-        >
-          <input type="file" ref="importInput" accept=".txt" style="display:none" @change="handleImport" />
-          <svg viewBox="0 0 24 24" width="20" height="20" fill="none" stroke="currentColor" stroke-width="1.5">
-            <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
-            <polyline points="17 8 12 3 7 8" />
-            <line x1="12" y1="3" x2="12" y2="15" />
-          </svg>
-          <span class="drop-zone-label">Glisser le fichier ici ou cliquer pour importer</span>
-          <span class="drop-zone-hint">private_impact_requirement.txt — dossier 02_simulation_params/</span>
-        </div>
-
-        <div v-if="!projectData?.graph_id" class="graph-building-notice">
-          <div class="loading-ring loading-ring--sm"></div>
-          <span>Graphe en construction — les champs peuvent déjà être remplis. Le bouton s'activera automatiquement.</span>
-        </div>
-
-        <div class="form-grid">
-          <!-- Left column -->
-          <div class="form-col">
-            <div class="field-group">
-              <label class="field-label">DECISION MAKER</label>
-              <div class="field-row-3">
-                <input class="field-input" v-model="form.decisionMakerName" placeholder="Full name" />
-                <input class="field-input" v-model="form.decisionMakerRole" placeholder="Role / title" />
-                <input class="field-input" v-model="form.decisionMakerCompany" placeholder="Organisation" />
-              </div>
-            </div>
-
-            <div class="field-group">
-              <label class="field-label">DECISION <span class="required">*</span></label>
-              <textarea
-                class="field-textarea"
-                v-model="form.decisionText"
-                rows="5"
-                placeholder="Describe the decision precisely. E.g. 'We are closing the Lyon office and transferring 40 employees to Paris by Q3.'"
-              ></textarea>
-            </div>
-
-            <div class="field-group">
-              <label class="field-label">ADDITIONAL CONTEXT</label>
-              <textarea
-                class="field-textarea"
-                v-model="form.decisionContext"
-                rows="3"
-                placeholder="Background information, strategic rationale, known sensitivities..."
-              ></textarea>
-            </div>
-          </div>
-
-          <!-- Right column -->
-          <div class="form-col">
-            <div class="field-group">
-              <label class="field-label">RELATIONAL NETWORK — types to include</label>
-              <div class="checkbox-grid">
-                <label
-                  v-for="t in RELATIONAL_TYPES"
-                  :key="t"
-                  class="checkbox-item"
-                  :class="{ 'is-checked': form.relationalTypes.includes(t) }"
-                >
-                  <input
-                    type="checkbox"
-                    :value="t"
-                    v-model="form.relationalTypes"
-                    class="checkbox-native"
-                  />
-                  <span class="checkbox-box"></span>
-                  <span class="checkbox-label">{{ RELATIONAL_TYPE_LABELS[t] }}</span>
-                </label>
-              </div>
-
-              <div v-if="form.relationalTypes.length > 0" class="agent-counts-block">
-                <div v-for="t in form.relationalTypes" :key="t" class="agent-count-row">
-                  <span class="agent-count-label">{{ RELATIONAL_TYPE_LABELS[t] }}</span>
-                  <div class="agent-count-sep"></div>
-                  <input
-                    type="number"
-                    class="agent-count-input"
-                    v-model.number="agentCounts[t]"
-                    min="1"
-                    max="200"
-                  />
-                </div>
-                <div class="agent-count-total">Total : {{ totalAgents }} agents</div>
-              </div>
-            </div>
-
-            <div class="field-group">
-              <label class="field-label">TEMPORAL HORIZON</label>
-              <div class="horizon-btns">
-                <button
-                  v-for="opt in HORIZON_OPTIONS"
-                  :key="opt.days"
-                  type="button"
-                  class="horizon-btn"
-                  :class="{ 'is-active': form.horizonDays === opt.days }"
-                  @click="form.horizonDays = opt.days"
-                >{{ opt.label }}</button>
-              </div>
-            </div>
-
-            <div class="field-group">
-              <label class="field-label">QUESTIONS TO MEASURE</label>
-              <textarea
-                class="field-textarea"
-                v-model="form.questionsToMeasure"
-                rows="3"
-                placeholder="What do you want to measure? E.g. 'What is the risk of collective resistance? Who are the key opinion leaders?'"
-              ></textarea>
-            </div>
-          </div>
-        </div>
-
-        <div class="form-footer">
-          <button
-            class="btn-primary"
-            :disabled="!form.decisionText.trim() || form.relationalTypes.length === 0 || !projectData?.graph_id"
-            @click="runPrepare"
-          >
-            Prepare Simulation
-            <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2">
-              <line x1="5" y1="12" x2="19" y2="12" /><polyline points="12 5 19 12 12 19" />
-            </svg>
-          </button>
-        </div>
-      </div>
-    </main>
-
-    <!-- ══════════════════════════════════════════════════════════
-         STEP 2 — Prepare
-    ══════════════════════════════════════════════════════════ -->
-    <main v-else-if="currentStep === 2" class="content-area">
-      <div class="centered-panel">
-
-        <!-- Loading -->
-        <div v-if="isLoading" class="loading-block">
-          <div class="loading-ring"></div>
-          <p class="loading-label">Generating relational profiles and behavioural parameters…</p>
-          <p class="loading-hint">This may take a few seconds per agent. The LLM is building the simulation config.</p>
-        </div>
-
-        <!-- Results -->
-        <div v-else-if="prepareResult" class="prepare-results">
-          <div class="result-badge result-badge--ok">
-            <svg viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="3">
-              <polyline points="20 6 9 17 4 12" />
-            </svg>
-            Simulation ready
-          </div>
-
-          <div class="result-stats">
-            <div class="stat-card">
-              <span class="stat-value mono">{{ prepareResult.agent_count }}</span>
-              <span class="stat-label">Agents generated</span>
-            </div>
-            <div class="stat-card">
-              <span class="stat-value mono">{{ form.horizonDays }}d</span>
-              <span class="stat-label">Temporal horizon</span>
-            </div>
-            <div class="stat-card">
-              <span class="stat-value mono">{{ form.relationalTypes.length }}</span>
-              <span class="stat-label">Relation types</span>
-            </div>
-          </div>
-
-          <div class="relation-tags">
-            <span
-              v-for="t in form.relationalTypes"
-              :key="t"
-              class="relation-tag"
-            >{{ t }}</span>
-          </div>
-
-          <div class="sim-id-block">
-            <span class="sim-id-label">SIM ID</span>
-            <span class="sim-id-value mono">{{ simId }}</span>
-          </div>
-
-          <div class="result-actions">
-            <button class="btn-secondary" @click="goToStep(1)">← Back</button>
-            <button class="btn-primary" @click="runStart">
-              Launch Simulation
-              <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2">
-                <polygon points="5 3 19 12 5 21 5 3" />
-              </svg>
-            </button>
-          </div>
-        </div>
-
-      </div>
-    </main>
-
-    <!-- ══════════════════════════════════════════════════════════
-         STEP 3 — Running
-    ══════════════════════════════════════════════════════════ -->
-    <main v-else-if="currentStep === 3" class="content-area">
-      <div class="run-layout">
-
-        <!-- Left: Progress panel -->
-        <div class="run-progress-panel">
-          <div class="run-platform-status" :class="{ 'is-running': simStatus?.private_running, 'is-done': simStatus?.private_completed }">
-            <div class="rps-header">
-              <svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2">
-                <rect x="3" y="11" width="18" height="11" rx="2" ry="2" />
-                <path d="M7 11V7a5 5 0 0 1 10 0v4" />
-              </svg>
-              <span>Private Network</span>
-              <span v-if="simStatus?.private_completed" class="rps-badge-done">DONE</span>
-              <span v-else-if="simStatus?.private_running" class="rps-badge-run">RUNNING</span>
-              <span v-else class="rps-badge-idle">IDLE</span>
-            </div>
-            <div class="rps-stats">
-              <div class="rps-stat">
-                <span class="rps-stat-label">ROUND</span>
-                <span class="rps-stat-value mono">{{ simStatus?.private_current_round || 0 }}</span>
-              </div>
-              <div class="rps-stat">
-                <span class="rps-stat-label">DAY</span>
-                <span class="rps-stat-value mono">{{ simStatus?.private_simulated_days || 0 }}</span>
-              </div>
-              <div class="rps-stat">
-                <span class="rps-stat-label">ACTIONS</span>
-                <span class="rps-stat-value mono">{{ simStatus?.private_actions_count || 0 }}</span>
-              </div>
-            </div>
-            <!-- Progress bar -->
-            <div class="rps-progress-track">
-              <div
-                class="rps-progress-fill"
-                :style="{ width: roundProgress + '%' }"
-              ></div>
-            </div>
-            <div class="rps-progress-label mono">{{ roundProgress }}%</div>
-          </div>
-
-          <div class="run-action-types">
-            <div class="run-action-types-title">ACTION TYPES</div>
-            <div v-for="(count, type) in actionTypeCounts" :key="type" class="action-type-row">
-              <span class="action-type-name">{{ type }}</span>
-              <span class="action-type-count mono">{{ count }}</span>
-            </div>
-            <div v-if="Object.keys(actionTypeCounts).length === 0" class="no-actions-yet">
-              Waiting for first actions…
-            </div>
-          </div>
-
-          <div class="run-controls">
-            <button
-              v-if="simStatus?.runner_status === 'running'"
-              class="btn-stop"
-              @click="handleStop"
-            >
-              Stop Simulation
-            </button>
-            <button
-              v-if="simStatus?.runner_status === 'completed' || simStatus?.runner_status === 'stopped'"
-              class="btn-primary"
-              @click="runReport"
-            >
-              Generate Report →
-            </button>
-          </div>
-        </div>
-
-        <!-- Right col: propagation graph + reduced feed -->
-        <div class="run-right-col">
-          <div class="graph-panel" ref="graphContainer"></div>
-
-          <div class="run-feed-panel" ref="feedPanel">
-            <div class="feed-header">LIVE ACTION FEED</div>
-            <div class="feed-list">
-              <div
-                v-for="(action, idx) in recentActions.slice(-10)"
-                :key="idx"
-                class="feed-item"
-              >
-                <span class="feed-round mono">#{{ action.round_num }}</span>
-                <span class="feed-agent">{{ action.agent_name || `Agent ${action.agent_id}` }}</span>
-                <span class="feed-action-type" :class="actionTypeClass(action.action_type)">{{ action.action_type }}</span>
-                <span class="feed-time mono">{{ shortTime(action.timestamp) }}</span>
-              </div>
-              <div v-if="recentActions.length === 0" class="feed-empty">Waiting for simulation events…</div>
-            </div>
-          </div>
-        </div>
-
-      </div>
-    </main>
-
-    <!-- ══════════════════════════════════════════════════════════
-         STEP 4 — Report
-    ══════════════════════════════════════════════════════════ -->
-    <main v-else-if="currentStep === 4" class="content-area">
-      <div class="centered-panel">
-
-        <!-- Generating -->
-        <div v-if="isLoading" class="loading-block">
-          <div class="loading-ring"></div>
-          <p class="loading-label">Report Agent is analysing the simulation…</p>
-          <p class="loading-hint">{{ reportProgress }}</p>
-        </div>
-
-        <!-- Report ready -->
-        <div v-else-if="reportResult" class="report-ready">
-          <div class="result-badge result-badge--ok">
-            <svg viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="3">
-              <polyline points="20 6 9 17 4 12" />
-            </svg>
-            Report ready
-          </div>
-
-          <div class="report-sections" v-if="reportResult.outline?.sections?.length">
-            <div v-for="(section, idx) in reportResult.outline.sections" :key="idx" class="report-section">
-              <div class="rs-header" @click="toggleSection(idx)">
-                <span class="rs-num">{{ String(idx + 1).padStart(2, '0') }}</span>
-                <span class="rs-title">{{ section.title || ('Section ' + String(idx + 1).padStart(2, '0')) }}</span>
-                <svg class="rs-chevron" :class="{ 'is-open': !collapsedSections.has(idx) }" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2">
-                  <polyline points="6 9 12 15 18 9" />
-                </svg>
-              </div>
-              <div v-show="!collapsedSections.has(idx)" class="rs-body">
-                <p>{{ section.content }}</p>
-              </div>
-            </div>
-          </div>
-          <pre v-else-if="reportResult.markdown_content" class="report-markdown">{{ reportResult.markdown_content }}</pre>
-
-          <div class="result-actions">
-            <button class="btn-secondary" @click="exportReportMarkdown">
-              Export .md
-            </button>
-            <button class="btn-secondary" @click="goToStep(5)">
-              Talk to Agents →
-            </button>
-          </div>
-        </div>
-
-        <!-- Error generating report -->
-        <div v-else class="error-placeholder">
-          <p>Report generation did not complete. Check logs and retry.</p>
-          <button class="btn-secondary" @click="runReport">Retry</button>
-        </div>
-
-      </div>
-    </main>
-
-    <!-- ══════════════════════════════════════════════════════════
-         STEP 5 — Interaction
-    ══════════════════════════════════════════════════════════ -->
-    <main v-else-if="currentStep === 5" class="content-area">
-      <div class="chat-layout">
-
-        <!-- Left: agent list -->
-        <div class="chat-agents-panel">
-          <div class="chat-agents-title">RELATIONAL AGENTS</div>
-          <div
-            v-for="agent in chatAgents"
-            :key="agent.agent_id"
-            class="chat-agent-item"
-            :class="{ 'is-selected': selectedAgentId === agent.agent_id }"
-            @click="selectedAgentId = agent.agent_id"
-          >
-            <div class="agent-avatar">{{ initials(agent.entity_name) }}</div>
-            <div class="agent-info">
-              <div class="agent-name">{{ agent.entity_name }}</div>
-              <div class="agent-type">{{ agent.relational_link_type }}</div>
-            </div>
-            <div class="agent-stance-dot" :class="'stance-' + agent.stance"></div>
-          </div>
-          <div v-if="chatAgents.length === 0" class="chat-agents-empty">Loading agents…</div>
-        </div>
-
-        <!-- Right: chat -->
-        <div class="chat-main">
-          <div class="chat-messages" ref="chatMessagesEl">
-            <div v-if="!selectedAgentId" class="chat-placeholder">
-              Select an agent on the left to start a conversation.
-            </div>
-            <template v-else>
-              <div
-                v-for="(msg, idx) in currentMessages"
-                :key="idx"
-                class="chat-msg"
-                :class="msg.role === 'user' ? 'chat-msg--user' : 'chat-msg--agent'"
-              >
-                <div class="chat-msg-label">{{ msg.role === 'user' ? 'You' : selectedAgentName }}</div>
-                <div class="chat-msg-text">{{ msg.content }}</div>
-              </div>
-              <div v-if="isChatLoading" class="chat-msg chat-msg--agent">
-                <div class="chat-msg-label">{{ selectedAgentName }}</div>
-                <div class="chat-msg-text chat-thinking">
-                  <span></span><span></span><span></span>
-                </div>
-              </div>
-            </template>
-          </div>
-
-          <div class="chat-input-row" v-if="selectedAgentId">
-            <textarea
-              class="chat-input"
-              v-model="chatInput"
-              placeholder="Ask this agent a question…"
-              rows="2"
-              @keydown.enter.exact.prevent="sendChat"
-            ></textarea>
-            <button class="chat-send-btn" :disabled="!chatInput.trim() || isChatLoading" @click="sendChat">
-              <svg viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2">
-                <line x1="22" y1="2" x2="11" y2="13" />
-                <polygon points="22 2 15 22 11 13 2 9 22 2" />
-              </svg>
-            </button>
-          </div>
-        </div>
-
-      </div>
-    </main>
-
-  </div>
-</template>
-
-<script setup>
-import { ref, reactive, computed, watch, onMounted, onUnmounted, nextTick } from 'vue'
-import { useRouter } from 'vue-router'
-import * as d3 from 'd3'
-import LanguageSwitcher from '../components/LanguageSwitcher.vue'
-import { getProject } from '../api/graph.js'
-import { interviewAgents } from '../api/simulation.js'
-import { getReport } from '../api/report.js'
-import {
-  preparePrivateSimulation,
-  startPrivateSimulation,
-  getPrivateStatus,
-  stopPrivateSimulation,
-  getPrivateActions,
-  generatePrivateReport,
-  getPrivateReportStatus,
-} from '../api/private.js'
-
-const props = defineProps({
-  projectId: { type: String, required: true },
-})
-
-const router = useRouter()
-
-// ── Constants ──────────────────────────────────────────────────────────────
-
-const RELATIONAL_TYPES = [
-  'ouvrier_production', 'technicien', 'commercial',
-  'manager', 'codir', 'client_externe', 'partenaire', 'concurrent',
-]
-
-const RELATIONAL_TYPE_LABELS = {
-  ouvrier_production: 'Ouvrier / Production',
-  technicien: 'Technicien',
-  commercial: 'Commercial',
-  manager: 'Manager',
-  codir: 'CODIR',
-  client_externe: 'Client externe',
-  partenaire: 'Partenaire',
-  concurrent: 'Concurrent',
-}
-
-const HORIZON_OPTIONS = [
-  { days: 3, label: '3 jours (72h)' },
-  { days: 7, label: '7 jours' },
-  { days: 30, label: '30 jours' },
-  { days: 180, label: '6 mois (180 jours)' },
-]
-
-const stepNames = ['Requirement', 'Prepare', 'Run', 'Report', 'Interact']
-
-// ── State ──────────────────────────────────────────────────────────────────
-
-const currentStep = ref(1)
-const projectData = ref(null)
-const simId = ref(null)
-const simStatus = ref(null)
-const prepareResult = ref(null)
-const reportResult = ref(null)
-const isLoading = ref(false)
-const error = ref(null)
-const reportProgress = ref('')
-
-// Step 1 - import config
-const importInput = ref(null)
-const isDragOver = ref(false)
-
-// Step 3 - live feed
-const recentActions = ref([])
-const feedPanel = ref(null)
-let pollingTimer = null
-
-// Step 1 - graph ready polling
-let graphReadyTimer = null
-
-// Step 3 - D3 propagation graph
-const graphContainer = ref(null)
-let simulation = null
-let svgEl = null
-let linkGroup = null
-let nodeGroup = null
-
-// Step 4 - report polling
-let reportPollingTimer = null
-const collapsedSections = ref(new Set())
-
-// Step 5 - chat
-const chatAgents = ref([])
-const selectedAgentId = ref(null)
-const chatMessages = reactive({}) // agentId -> [{ role, content }]
-const chatInput = ref('')
-const isChatLoading = ref(false)
-const chatMessagesEl = ref(null)
-
-// Form
-const form = reactive({
-  decisionMakerName: '',
-  decisionMakerRole: '',
-  decisionMakerCompany: '',
-  decisionText: '',
-  decisionContext: '',
-  relationalTypes: ['ouvrier_production', 'technicien', 'commercial', 'manager', 'codir'],
-  horizonDays: 3,
-  questionsToMeasure: '',
-})
-
-// Agent counts per relational type
-const agentCounts = reactive({})
-
-watch(() => form.relationalTypes, (types) => {
-  for (const t of types) {
-    if (!(t in agentCounts)) agentCounts[t] = 10
-  }
-  for (const key of Object.keys(agentCounts)) {
-    if (!types.includes(key)) delete agentCounts[key]
-  }
-}, { immediate: true })
-
-// ── Computed ───────────────────────────────────────────────────────────────
-
-const totalAgents = computed(() =>
-  Object.values(agentCounts).reduce((sum, n) => sum + (n || 0), 0)
-)
-
-const statusClass = computed(() => {
-  const s = simStatus.value?.runner_status
-  if (s === 'running') return 'processing'
-  if (s === 'completed') return 'completed'
-  if (s === 'failed') return 'error'
-  if (isLoading.value) return 'processing'
-  return 'idle'
-})
-
-const statusText = computed(() => {
-  if (isLoading.value) return 'Processing'
-  const s = simStatus.value?.runner_status
-  if (s === 'running') return 'Running'
-  if (s === 'completed') return 'Completed'
-  if (s === 'failed') return 'Failed'
-  return 'Ready'
-})
-
-const roundProgress = computed(() => {
-  if (simStatus.value?.progress_percent != null) return simStatus.value.progress_percent
-  const total = simStatus.value?.private_total_rounds || 0
-  const current = simStatus.value?.private_current_round || 0
-  if (!total) return 0
-  return Math.round((current / total) * 100)
-})
-
-const actionTypeCounts = computed(() => {
-  const counts = {}
-  for (const action of recentActions.value) {
-    counts[action.action_type] = (counts[action.action_type] || 0) + 1
-  }
-  return counts
-})
-
-const selectedAgentName = computed(() => {
-  const agent = chatAgents.value.find(a => a.agent_id === selectedAgentId.value)
-  return agent?.entity_name || `Agent ${selectedAgentId.value}`
-})
-
-const currentMessages = computed(() => {
-  return chatMessages[selectedAgentId.value] || []
-})
-
-// ── D3 Graph ───────────────────────────────────────────────────────────────
-
-const ACTION_COLORS = {
-  CONFRONT: '#F44336',
-  COALITION_BUILD: '#FF9800',
-  VOCAL_SUPPORT: '#4CAF50',
-  SILENT_LEAVE: '#616161',
-  REACT_PRIVATELY: '#E0E0E0',
-  DO_NOTHING: '#E0E0E0',
-}
-
-const nodeColor = (actionType) => {
-  if (!actionType) return '#E0E0E0'
-  const upper = actionType.toUpperCase()
-  for (const [key, color] of Object.entries(ACTION_COLORS)) {
-    if (upper.includes(key)) return color
-  }
-  return '#E0E0E0'
-}
-
-const ticked = () => {
-  if (!linkGroup || !nodeGroup) return
-  linkGroup.selectAll('line')
-    .attr('x1', d => d.source.x)
-    .attr('y1', d => d.source.y)
-    .attr('x2', d => d.target.x)
-    .attr('y2', d => d.target.y)
-  nodeGroup.selectAll('g.node')
-    .attr('transform', d => `translate(${d.x},${d.y})`)
-}
-
-const initGraph = () => {
-  if (!graphContainer.value) return
-  const container = graphContainer.value
-  const width = container.clientWidth || 600
-  const height = container.clientHeight || 400
-
-  d3.select(container).selectAll('*').remove()
-
-  svgEl = d3.select(container)
-    .append('svg')
-    .attr('width', '100%')
-    .attr('height', '100%')
-    .attr('viewBox', `0 0 ${width} ${height}`)
-
-  linkGroup = svgEl.append('g').attr('class', 'links')
-  nodeGroup = svgEl.append('g').attr('class', 'nodes')
-
-  simulation = d3.forceSimulation([])
-    .force('charge', d3.forceManyBody().strength(-120))
-    .force('center', d3.forceCenter(width / 2, height / 2))
-    .force('link', d3.forceLink([]).id(d => d.id).distance(80))
-    .on('tick', ticked)
-}
-
-const updateGraph = (actions) => {
-  if (!simulation || !svgEl) return
-
-  const agentActions = {}
-  const agentNames = {}
-  const linkPairs = {}
-
-  // Seed nodes from static config so the graph shows the full relational
-  // network even before any action has been recorded.
-  const staticAgents = simStatus.value?.agents || []
-  for (const a of staticAgents) {
-    if (a.agent_id === undefined || a.agent_id === null) continue
-    const sid = String(a.agent_id)
-    agentNames[sid] = a.entity_name || `Agent ${sid}`
-  }
-
-  for (const action of actions) {
-    const id = action.agent_id
-    if (id === undefined || id === null) continue
-    const sid = String(id)
-    agentNames[sid] = action.agent_name || agentNames[sid] || `Agent ${sid}`
-    if (!agentActions[sid]) agentActions[sid] = {}
-    const t = action.action_type || 'DO_NOTHING'
-    agentActions[sid][t] = (agentActions[sid][t] || 0) + 1
-    if (action.target_agent_id !== undefined && action.target_agent_id !== null) {
-      const key = `${sid}__${String(action.target_agent_id)}`
-      linkPairs[key] = (linkPairs[key] || 0) + 1
-    }
-  }
-
-  const nodes = Object.keys(agentNames).map(id => {
-    const counts = agentActions[id] || {}
-    const dominant = Object.entries(counts).sort((a, b) => b[1] - a[1])[0]?.[0] || 'DO_NOTHING'
-    return { id, name: agentNames[id], dominant }
-  })
-
-  const nodeIds = new Set(nodes.map(n => n.id))
-
-  // Merge static cascade_influence edges with dynamic action-based edges.
-  const staticEdges = simStatus.value?.relational_edges || []
-  const staticKeys = new Set()
-  for (const e of staticEdges) {
-    if (e.source === undefined || e.target === undefined) continue
-    staticKeys.add(`${String(e.source)}__${String(e.target)}`)
-  }
-
-  const links = []
-  staticKeys.forEach(key => {
-    const [source, target] = key.split('__')
-    if (nodeIds.has(source) && nodeIds.has(target)) {
-      links.push({ source, target, count: linkPairs[key] || 0, kind: 'cascade' })
-    }
-  })
-  Object.entries(linkPairs).forEach(([key, count]) => {
-    if (staticKeys.has(key)) return
-    const [source, target] = key.split('__')
-    if (nodeIds.has(source) && nodeIds.has(target)) {
-      links.push({ source, target, count, kind: 'action' })
-    }
-  })
-
-  const existing = {}
-  simulation.nodes().forEach(n => { existing[n.id] = { x: n.x, y: n.y, vx: n.vx, vy: n.vy } })
-  nodes.forEach(n => {
-    if (existing[n.id]) {
-      n.x = existing[n.id].x; n.y = existing[n.id].y
-      n.vx = existing[n.id].vx; n.vy = existing[n.id].vy
-    }
-  })
-
-  simulation.nodes(nodes)
-  simulation.force('link').links(links)
-  simulation.alpha(0.3).restart()
-
-  const linkSel = linkGroup.selectAll('line')
-    .data(links, d => `${d.source.id || d.source}__${d.target.id || d.target}`)
-  linkSel.exit().remove()
-  linkSel.enter().append('line')
-    .merge(linkSel)
-    .attr('stroke', d => d.kind === 'cascade' && d.count === 0 ? '#E5E5E5' : '#999')
-    .attr('stroke-dasharray', d => d.kind === 'cascade' && d.count === 0 ? '3,3' : null)
-    .attr('stroke-width', d => Math.min(1 + d.count * 0.5, 4))
-
-  const nodeSel = nodeGroup.selectAll('g.node').data(nodes, d => d.id)
-  nodeSel.exit().remove()
-  const nodeEnter = nodeSel.enter().append('g').attr('class', 'node')
-  nodeEnter.append('circle').attr('r', 8)
-  nodeEnter.append('text')
-    .attr('y', 20)
-    .attr('text-anchor', 'middle')
-    .attr('font-size', '9px')
-    .attr('fill', '#555')
-
-  const nodeMerge = nodeEnter.merge(nodeSel)
-  nodeMerge.select('circle')
-    .attr('fill', d => nodeColor(d.dominant))
-    .attr('stroke', '#fff')
-    .attr('stroke-width', 1.5)
-  nodeMerge.select('text')
-    .text(d => d.name.slice(0, 12))
-}
-
-// ── Import config (Step 1) ─────────────────────────────────────────────────
-
-const triggerImport = () => { importInput.value?.click() }
-
-const handleDrop = (event) => {
-  isDragOver.value = false
-  const file = event.dataTransfer.files?.[0]
-  if (!file) return
-  const reader = new FileReader()
-  reader.onload = (e) => parseImportedConfig(e.target.result)
-  reader.readAsText(file)
-}
-
-const handleImport = (event) => {
-  const file = event.target.files?.[0]
-  if (!file) return
-  const reader = new FileReader()
-  reader.onload = (e) => {
-    parseImportedConfig(e.target.result)
-    event.target.value = ''
-  }
-  reader.readAsText(file)
-}
-
-const parseImportedConfig = (text) => {
-  let configText = text
-  const configMatch = text.match(/#CONFIG\n([\s\S]*?)\n#END_CONFIG/)
-  if (configMatch) configText = configMatch[1]
-
-  const labelToKey = {}
-  for (const [key, label] of Object.entries(RELATIONAL_TYPE_LABELS)) {
-    labelToKey[label.toLowerCase()] = key
-  }
-
-  for (const line of configText.split('\n')) {
-    try {
-      if (line.startsWith('Décideur :')) {
-        const val = line.replace('Décideur :', '').trim()
-        const [nameAndRole, company] = val.split(' at ')
-        const [name, role] = (nameAndRole || '').split(' — ')
-        if (name) form.decisionMakerName = name.trim()
-        if (role) form.decisionMakerRole = role.trim()
-        if (company) form.decisionMakerCompany = company.trim()
-      } else if (line.startsWith('Décision :')) {
-        form.decisionText = line.replace('Décision :', '').trim()
-      } else if (line.startsWith('Réseau simulé :')) {
-        const types = line.replace('Réseau simulé :', '').trim()
-          .split(', ').map(s => s.trim()).filter(t => RELATIONAL_TYPES.includes(t))
-        if (types.length) form.relationalTypes = types
-      } else if (line.startsWith('Horizon temporel :')) {
-        const days = parseInt(line.replace('Horizon temporel :', '').trim(), 10)
-        if (!isNaN(days)) form.horizonDays = days
-      } else if (line.startsWith('Questions to measure :')) {
-        form.questionsToMeasure = line.replace('Questions to measure :', '').trim()
-      } else if (line.startsWith('Agent distribution:')) {
-        const entries = line.replace('Agent distribution:', '').trim().split(',')
-        for (const entry of entries) {
-          const parts = entry.trim().split(' × ')
-          if (parts.length !== 2) continue
-          const key = labelToKey[parts[0].trim().toLowerCase()]
-          const count = parseInt(parts[1].trim(), 10)
-          if (key && !isNaN(count)) agentCounts[key] = count
-        }
-      }
-    } catch { /* ligne ignorée */ }
-  }
-}
-
-// ── Helpers ────────────────────────────────────────────────────────────────
-
-const buildRequirement = () => {
-  const parts = []
-  if (form.decisionMakerName) {
-    parts.push(`Decision maker: ${form.decisionMakerName}` +
-      (form.decisionMakerRole ? ` — ${form.decisionMakerRole}` : '') +
-      (form.decisionMakerCompany ? ` at ${form.decisionMakerCompany}` : ''))
-  }
-  parts.push(`Decision: ${form.decisionText}`)
-  parts.push(`Relational network: ${form.relationalTypes.join(', ')}`)
-  parts.push(`Temporal horizon: ${form.horizonDays} days`)
-  if (form.questionsToMeasure) parts.push(`Questions to measure: ${form.questionsToMeasure}`)
-  const agentDistrib = form.relationalTypes
-    .map(t => `${RELATIONAL_TYPE_LABELS[t]} × ${agentCounts[t] || 10}`)
-    .join(', ')
-  parts.push(`Agent distribution: ${agentDistrib}`)
-  return parts.join('\n')
-}
-
-const goToStep = (n) => { currentStep.value = n }
-
-const shortTime = (ts) => {
-  if (!ts) return ''
-  try {
-    return new Date(ts).toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit', second: '2-digit' })
-  } catch {
-    return ts.slice(11, 19) || ''
-  }
-}
-
-const actionTypeClass = (type) => {
-  if (!type) return ''
-  const t = type.toLowerCase()
-  if (t.includes('confront') || t.includes('oppos')) return 'type-hostile'
-  if (t.includes('support') || t.includes('coalition')) return 'type-support'
-  if (t.includes('nothing') || t.includes('idle') || t.includes('react_privately')) return 'type-passive'
-  return 'type-neutral'
-}
-
-const initials = (name) => {
-  if (!name) return '?'
-  return name.split(' ').map(w => w[0]).join('').slice(0, 2).toUpperCase()
-}
-
-const toggleSection = (idx) => {
-  const s = new Set(collapsedSections.value)
-  s.has(idx) ? s.delete(idx) : s.add(idx)
-  collapsedSections.value = s
-}
-
-const exportReportMarkdown = () => {
-  const report = reportResult.value
-  if (!report) return
-
-  let md = report.markdown_content
-  if (!md) {
-    const title = report.outline?.title || 'Private Impact Report'
-    const summary = report.outline?.summary || ''
-    const sections = report.outline?.sections || []
-    md = `# ${title}\n\n`
-    if (summary) md += `> ${summary}\n\n`
-    sections.forEach((s, idx) => {
-      const num = String(idx + 1).padStart(2, '0')
-      md += `## ${num} — ${s.title || 'Section ' + num}\n\n`
-      md += `${s.content || ''}\n\n`
-    })
-  }
-
-  const blob = new Blob([md], { type: 'text/markdown;charset=utf-8' })
-  const url = URL.createObjectURL(blob)
-  const a = document.createElement('a')
-  a.href = url
-  a.download = `private-impact-report-${simId.value || 'report'}.md`
-  document.body.appendChild(a)
-  a.click()
-  document.body.removeChild(a)
-  URL.revokeObjectURL(url)
-}
-
-// ── Data loading ───────────────────────────────────────────────────────────
-
-onMounted(async () => {
-  try {
-    const res = await getProject(props.projectId)
-    projectData.value = res.data
-    if (!res.data?.graph_id) {
-      waitForGraph()
-    }
-  } catch (e) {
-    error.value = `Could not load project: ${e.message}`
-  }
-})
-
-const waitForGraph = () => {
-  graphReadyTimer = setInterval(async () => {
-    try {
-      const res = await getProject(props.projectId)
-      if (res.data?.graph_id) {
-        projectData.value = res.data
-        clearInterval(graphReadyTimer)
-        graphReadyTimer = null
-      }
-    } catch { /* continue polling */ }
-  }, 3000)
-}
-
-onUnmounted(() => {
-  stopPolling()
-  stopReportPolling()
-  if (simulation) simulation.stop()
-  if (graphReadyTimer) { clearInterval(graphReadyTimer); graphReadyTimer = null }
-})
-
-// ── Step 2: Prepare ────────────────────────────────────────────────────────
-
-const runPrepare = async () => {
-  if (!projectData.value?.graph_id) {
-    error.value = 'No graph_id found for this project. Build the graph first.'
-    return
-  }
-  error.value = null
-  isLoading.value = true
-  currentStep.value = 2
-
-  try {
-    const res = await preparePrivateSimulation({
-      graph_id: projectData.value.graph_id,
-      simulation_requirement: buildRequirement(),
-      decision_context: form.decisionContext,
-      entity_types: form.relationalTypes,
-    })
-    simId.value = res.data.sim_id
-    prepareResult.value = res.data
-  } catch (e) {
-    error.value = `Prepare failed: ${e.message}`
-    currentStep.value = 1
-  } finally {
-    isLoading.value = false
-  }
-}
-
-// ── Step 3: Start + monitor ────────────────────────────────────────────────
-
-const runStart = async () => {
-  error.value = null
-  isLoading.value = true
-  currentStep.value = 3
-
-  try {
-    await startPrivateSimulation({ sim_id: simId.value })
-    startPolling()
-  } catch (e) {
-    error.value = `Start failed: ${e.message}`
-    currentStep.value = 2
-  } finally {
-    isLoading.value = false
-  }
-}
-
-const startPolling = () => {
-  pollingTimer = setInterval(pollStatus, 3000)
-  pollStatus()
-}
-
-const stopPolling = () => {
-  if (pollingTimer) { clearInterval(pollingTimer); pollingTimer = null }
-}
-
-const pollStatus = async () => {
-  if (!simId.value) return
-  try {
-    const res = await getPrivateStatus(simId.value)
-    simStatus.value = res.data
-    recentActions.value = res.data.recent_actions || []
-
-    const status = res.data.runner_status
-    if (status === 'completed' || status === 'stopped' || status === 'failed') {
-      stopPolling()
-      // Fetch full action list for the feed
-      try {
-        const actRes = await getPrivateActions(simId.value)
-        recentActions.value = actRes.data || []
-      } catch { /* keep recent from status */ }
-    }
-  } catch (e) {
-    console.error('Status poll error:', e)
-  }
-}
-
-const handleStop = async () => {
-  try {
-    stopPolling()
-    await stopPrivateSimulation(simId.value)
-    const res = await getPrivateStatus(simId.value)
-    simStatus.value = res.data
-  } catch (e) {
-    error.value = `Stop failed: ${e.message}`
-  }
-}
-
-// ── Step 4: Report ─────────────────────────────────────────────────────────
-
-const runReport = async () => {
-  error.value = null
-  isLoading.value = true
-  reportProgress.value = 'Initialising Report Agent…'
-  currentStep.value = 4
-
-  try {
-    const res = await generatePrivateReport(simId.value)
-    const reportId = res.data.report_id
-    const taskId = res.data.task_id
-
-    if (res.data.already_generated) {
-      const fullRes = await getReport(reportId)
-      reportResult.value = fullRes.data
-      isLoading.value = false
-      return
-    }
-
-    startReportPolling(taskId, reportId)
-  } catch (e) {
-    error.value = `Report trigger failed: ${e.message}`
-    isLoading.value = false
-  }
-}
-
-const startReportPolling = (taskId, reportId) => {
-  reportPollingTimer = setInterval(() => pollReport(taskId, reportId), 4000)
-  pollReport(taskId, reportId)
-}
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-const stopReportPolling = () => {
-  if (reportPollingTimer) { clearInterval(reportPollingTimer); reportPollingTimer = null }
-}
-
-const pollReport = async (taskId, reportId) => {
-  try {
-    const res = await getPrivateReportStatus(taskId)
-    const status = res.data?.status
-    reportProgress.value = res.data?.message || 'Generating…'
-
-    if (status === 'completed') {
-      stopReportPolling()
-      const finalReportId = res.data?.result?.report_id || reportId
-      const fullRes = await getReport(finalReportId)
-      reportResult.value = fullRes.data
-      isLoading.value = false
-    } else if (status === 'failed') {
-      stopReportPolling()
-      error.value = `Report failed: ${res.data?.error || res.data?.message}`
-      isLoading.value = false
-    }
-  } catch (e) {
-    console.error('Report poll error:', e)
-  }
-}
-
-// ── Step 5: Interaction ────────────────────────────────────────────────────
-
-watch(() => currentStep.value, async (step) => {
-  if (step === 3) {
-    await nextTick()
-    initGraph()
-  }
-  if (step === 5 && chatAgents.value.length === 0) {
-    loadChatAgents()
-  }
-})
-
-const loadChatAgents = async () => {
-  try {
-    const res = await getPrivateActions(simId.value)
-    const agentMap = {}
-    for (const action of (res.data || [])) {
-      if (!agentMap[action.agent_id]) {
-        agentMap[action.agent_id] = {
-          agent_id: action.agent_id,
-          entity_name: action.agent_name || `Agent ${action.agent_id}`,
-          relational_link_type: action.action_args?.relational_link_type || '',
-          stance: action.action_args?.stance || 'neutral',
-        }
-      }
-    }
-    chatAgents.value = Object.values(agentMap)
-  } catch (e) {
-    console.error('Could not load agents:', e)
-  }
-}
-
-const sendChat = async () => {
-  if (!chatInput.value.trim() || !selectedAgentId.value || isChatLoading.value) return
-
-  const userMsg = chatInput.value.trim()
-  chatInput.value = ''
-
-  if (!chatMessages[selectedAgentId.value]) chatMessages[selectedAgentId.value] = []
-  chatMessages[selectedAgentId.value].push({ role: 'user', content: userMsg })
-
-  await nextTick()
-  scrollChat()
-
-  isChatLoading.value = true
-  try {
-    const history = chatMessages[selectedAgentId.value]
-      .slice(0, -1)
-      .map(m => ({ role: m.role, content: m.content }))
-
-    const historyContext = history
-      .map(m => `${m.role === 'user' ? 'User' : 'You'}: ${m.content}`)
-      .join('\n')
-    const prompt = historyContext
-      ? `Previous conversation:\n${historyContext}\n\nNew question: ${userMsg}`
-      : userMsg
-
-    const res = await interviewAgents({
-      simulation_id: simId.value,
-      interviews: [{
-        agent_id: selectedAgentId.value,
-        prompt,
-      }],
-    })
-
-    let reply = '(no response)'
-    if (res.success && res.data) {
-      const resultData = res.data.result || res.data
-      const resultsDict = resultData.results || resultData
-      const first = Object.values(resultsDict || {}).find(v => v && v.response)
-      if (first?.response) reply = first.response
-    }
-    chatMessages[selectedAgentId.value].push({ role: 'agent', content: reply })
-  } catch (e) {
-    chatMessages[selectedAgentId.value].push({ role: 'agent', content: `Error: ${e.message}` })
-  } finally {
-    isChatLoading.value = false
-    await nextTick()
-    scrollChat()
-  }
-}
-
-const scrollChat = () => {
-  if (chatMessagesEl.value) {
-    chatMessagesEl.value.scrollTop = chatMessagesEl.value.scrollHeight
-  }
-}
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-// Auto-scroll feed + update propagation graph
-watch(() => recentActions.value.length, () => {
-  nextTick(() => {
-    if (feedPanel.value) feedPanel.value.scrollTop = feedPanel.value.scrollHeight
-  })
-  updateGraph(recentActions.value)
-})
-
-// Re-render graph skeleton as soon as the static cascade graph arrives,
-// even if no action has been produced yet.
-watch(
-  () => (simStatus.value?.agents?.length || 0) + (simStatus.value?.relational_edges?.length || 0),
-  () => updateGraph(recentActions.value || [])
-)
-</script>
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-/* ── Run layout (step 3) ─────────────────────────────────────────────────── */
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-/* ── Right column + graph panel (step 3) ─────────────────────────────────── */
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-/* ── Feed panel (step 3 right) ───────────────────────────────────────────── */
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-/* ── Report (step 4) ─────────────────────────────────────────────────────── */
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-/* ── Chat (step 5) ───────────────────────────────────────────────────────── */
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-.agent-info { flex: 1; min-width: 0; }
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-.agent-stance-dot {
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-.chat-thinking span {
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-.chat-thinking span:nth-child(2) { animation-delay: 0.2s; }
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-@keyframes bounce {
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-.chat-input {
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-.chat-input:focus { outline: none; border-color: #000; }
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-.chat-send-btn {
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-.chat-send-btn:hover { background: #222; }
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-/* ── Horizon buttons ─────────────────────────────────────────────────────── */
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-.horizon-btn {
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-.horizon-btn.is-active {
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-/* ── Agent counts block ──────────────────────────────────────────────────── */
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-.agent-count-label {
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-.agent-count-input:focus { outline: none; border-color: #000; }
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-.agent-count-total {
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-
-/* ── Mono utility ────────────────────────────────────────────────────────── */
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-</style>