diff --git a/app/routers/board.py b/app/routers/board.py
index bcde913..1c8df45 100644
--- a/app/routers/board.py
+++ b/app/routers/board.py
@@ -50,45 +50,32 @@ async def board(
     milestone: str = "",
     label: str = "",
     assignee: str = "",
+    fragment: bool = False,
 ):
     """Kanban board for a Gitea project."""
     try:
-        # Get issues
         issues = await gitea.get_issues(owner, repo, state="all")
-
-        # Get labels
-        labels = await gitea.get_labels(owner, repo)
-
-        # Get milestones
+        labels_list = await gitea.get_labels(owner, repo)
         milestones = await gitea.get_milestones(owner, repo)
 
-        # Filter by milestone
         if milestone:
             issues = [i for i in issues if i.get("milestone", {}).get("title") == milestone]
-
-        # Filter by label
         if label:
             issues = [i for i in issues if any(lbl["name"] == label for lbl in i.get("labels", []))]
-
-        # Filter by assignee
         if assignee:
             issues = [i for i in issues if i.get("assignee", {}).get("login") == assignee]
 
-        # Separate PRs from issues (ponytail: PRs are also in /issues endpoint)
         prs = [i for i in issues if "pull_request" in i]
         issues_only = [i for i in issues if "pull_request" not in i]
 
-        # Get board config
         board_info = _ensure_board(owner, repo)
         columns = board_info["columns"]
         cards = _get_cards(board_info["id"])
 
-        # Map issues to columns
         column_map: dict[str, list[dict]] = {col: [] for col in columns}
         card_by_issue = {c["gitea_issue_id"]: c for c in cards if c["gitea_issue_id"]}
 
         for issue in issues_only:
-            # Determine column from issue state/labels first, then from DB position
             col = _issue_column(issue, columns, board_info["id"])
             issue["_col"] = col
             issue["_card"] = card_by_issue.get(issue["number"])
@@ -97,37 +84,37 @@ async def board(
     except Exception as e:
         from httpx import HTTPStatusError
         if isinstance(e, HTTPStatusError) and e.response is not None and e.response.status_code == 404:
-            html = '<div style="padding:48px;text-align:center">'
-            html += '<h2 style="color:var(--text-dim)">Projet introuvable</h2>'
-            html += f'<p style="color:var(--text-dim)">{owner}/{repo} n\'existe pas sur Gitea.</p>'
-            html += '<a href="/" class="btn btn-primary" style="margin-top:16px">Retour aux projets</a>'
-            html += '</div>'
-            return HTMLResponse(html, status_code=404)
+            return HTMLResponse(
+                '<div style="padding:48px;text-align:center">'
+                f'<h2 style="color:#8b949e">Projet introuvable</h2>'
+                f'<p style="color:#8b949e">{owner}/{repo} n\'existe pas sur Gitea.</p>'
+                '<a href="/" class="btn btn-primary" style="margin-top:16px">Retour aux projets</a></div>',
+                status_code=404)
         logger.error("Board error: %s", e)
         return HTMLResponse(f"<p class='error'>Erreur: {e}</p>", status_code=500)
 
     from jinja2 import Environment, FileSystemLoader
     from datetime import datetime
     from app.config import settings
+    from app.auth.session import SessionManager
 
     env = Environment(loader=FileSystemLoader("app/templates"))
-    template = env.get_template("board.html")
-    return template.render(
-        request=request,
-        owner=owner,
-        repo=repo,
-        columns=columns,
-        column_map=column_map,
-        labels=labels,
-        milestones=milestones,
-        current_milestone=milestone,
-        current_label=label,
-        current_assignee=assignee,
-        prs=prs,
-        settings=settings,
-        now=datetime.now().isoformat()[:10],
+    now_str = datetime.now().isoformat()[:10]
+    user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))
+
+    ctx = dict(
+        request=request, owner=owner, repo=repo, columns=columns,
+        column_map=column_map, labels=labels_list, milestones=milestones,
+        current_milestone=milestone, current_label=label, current_assignee=assignee,
+        prs=prs, settings=settings, now=now_str, user=user,
     )
 
+    if fragment:
+        template = env.get_template("board_fragment.html")
+    else:
+        template = env.get_template("board.html")
+    return template.render(**ctx)
+
 
 def _issue_column(issue: dict, columns: list[str], board_id: int) -> str:
     """Determine which column an issue belongs to."""
diff --git a/app/templates/base.html b/app/templates/base.html
index eab9df5..558673b 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -18,9 +18,17 @@
       </a>
     </div>
     <div class="header-right">
-      <span id="user-info" hx-get="/auth/user" hx-trigger="load" hx-swap="innerHTML">
+      {% if user %}
+      <span id="user-info">
+        {% if user.avatar_url %}<img src="{{ user.avatar_url }}" width="20" height="20" class="avatar">{% endif %}
+        {{ user.login }}
+        <a href="/auth/logout" class="btn btn-sm">Déconnexion</a>
+      </span>
+      {% else %}
+      <span id="user-info">
         <a href="/auth/login" class="btn btn-sm">🔑 Login</a>
       </span>
+      {% endif %}
       <button class="theme-toggle" onclick="toggleTheme()" title="Thème clair/sombre">🌓</button>
     </div>
   </header>
@@ -28,8 +36,7 @@
     {% block content %}{% endblock %}
   </main>
 
-  <!-- Card Detail Modal (global) -->
-  <div id="card-modal" class="modal-overlay" style="display:none" hx-target="#card-modal-content">
+  <div id="card-modal" class="modal-overlay" style="display:none">
     <div class="modal-container">
       <div class="modal-header">
         <h3 id="card-modal-title">Détail</h3>
@@ -40,5 +47,6 @@
   </div>
 
   <script src="/static/js/app.js" defer></script>
+  {% block scripts %}{% endblock %}
 </body>
 </html>
diff --git a/app/templates/board.html b/app/templates/board.html
index 8138aa1..9369150 100644
--- a/app/templates/board.html
+++ b/app/templates/board.html
@@ -7,9 +7,7 @@
        milestone: '{{ current_milestone }}',
        label: '{{ current_label }}',
        assignee: '{{ current_assignee }}',
-       showNewIssue: false,
-       showDetail: false,
-       detailIssueId: 0
+       showNewIssue: false
      }">
 
   <!-- Header -->
@@ -31,10 +29,8 @@
   <!-- New Issue Form -->
   <div class="new-issue-form" x-show="showNewIssue" x-transition>
     <h4>Nouvelle issue dans {{ owner }}/{{ repo }}</h4>
-    <form id="new-issue-form" hx-post="/api/issues/{{ owner }}/{{ repo }}"
-          hx-target=".board-columns" hx-swap="outerHTML"
-          hx-include="[name='milestone_filter'],[name='label_filter'],[name='assignee_filter']"
-          hx-on--after-request="showNewIssue=false; this.reset()">
+    <form id="new-issue-form" onsubmit="handleNewIssue(event, '{{ owner }}', '{{ repo }}')">
+      <input type="hidden" name="csrf_token" class="csrf-token-field">
       <input type="text" name="title" placeholder="Titre de l'issue..." required class="form-input">
       <textarea name="body" placeholder="Description (markdown)..." rows="3" class="form-input"></textarea>
       <div class="form-row">
@@ -62,8 +58,8 @@
   <!-- Filters -->
   <div class="board-filters">
     <select class="filter-select" name="milestone_filter"
-            hx-get="/board/{{ owner }}/{{ repo }}"
-            hx-target=".board-columns"
+            hx-get="/board/{{ owner }}/{{ repo }}?fragment=1"
+            hx-target="#board-columns"
             hx-trigger="change"
             hx-include="[name='label_filter'],[name='assignee_filter']"
             hx-swap="outerHTML">
@@ -73,8 +69,8 @@
       {% endfor %}
     </select>
     <select class="filter-select" name="label_filter"
-            hx-get="/board/{{ owner }}/{{ repo }}"
-            hx-target=".board-columns"
+            hx-get="/board/{{ owner }}/{{ repo }}?fragment=1"
+            hx-target="#board-columns"
             hx-trigger="change"
             hx-include="[name='milestone_filter'],[name='assignee_filter']"
             hx-swap="outerHTML">
@@ -85,77 +81,19 @@
     </select>
     <input type="text" name="assignee_filter" placeholder="Assigné à..."
            class="filter-input"
-           hx-get="/board/{{ owner }}/{{ repo }}"
-           hx-target=".board-columns"
+           hx-get="/board/{{ owner }}/{{ repo }}?fragment=1"
+           hx-target="#board-columns"
            hx-trigger="keyup changed delay:500ms"
            hx-include="[name='milestone_filter'],[name='label_filter']"
            hx-swap="outerHTML"
            value="{{ current_assignee }}">
-    <button class="btn btn-sm" hx-get="/board/{{ owner }}/{{ repo }}"
-            hx-target=".board-columns" hx-swap="outerHTML"
-            hx-include="[name='milestone_filter'],[name='label_filter'],[name='assignee_filter']">
+    <button class="btn btn-sm" onclick="window.location.reload()">
       🔄 Rafraîchir
     </button>
   </div>
 
-  <!-- Columns -->
-  <div class="board-columns" id="board-columns"
-       hx-trigger="cardMoved from:body"
-       hx-get="/board/{{ owner }}/{{ repo }}?milestone={{ current_milestone }}&label={{ current_label }}&assignee={{ current_assignee }}"
-       hx-target=".board-columns"
-       hx-swap="outerHTML">
-    {% for col in columns %}
-    <div class="board-column"
-         data-column="{{ col }}"
-         id="col-{{ loop.index }}">
-      <div class="column-header">
-        <span class="column-title">{{ col }}</span>
-        <span class="column-count">{{ column_map[col]|length }}</span>
-      </div>
-      <div class="column-cards sortable"
-           data-column="{{ col }}"
-           data-owner="{{ owner }}"
-           data-repo="{{ repo }}">
-        {% for issue in column_map[col] %}
-        <div class="card"
-             data-issue-id="{{ issue.number }}"
-             data-column="{{ col }}"
-             draggable="true"
-             ondblclick="openCardDetail('{{ owner }}','{{ repo }}',{{ issue.number }})">
-          <div class="card-labels">
-            {% for lbl in issue.labels %}
-            <span class="card-label" style="background:#{{ lbl.color or '666' }}33; color:#{{ lbl.color or 'ccc' }}">{{ lbl.name }}</span>
-            {% endfor %}
-          </div>
-          <div class="card-title">
-            <a href="{{ issue.html_url }}" target="_blank" onclick="event.stopPropagation()">#{{ issue.number }}</a>
-            <span class="card-title-text">{{ issue.title[:80] }}{% if issue.title|length > 80 %}...{% endif %}</span>
-          </div>
-          <div class="card-meta">
-            {% if issue.assignee %}
-            <span class="card-assignee" title="{{ issue.assignee.login }}">
-              <img src="{{ issue.assignee.avatar_url }}" alt="" width="16" height="16" class="avatar">
-              {{ issue.assignee.login }}
-            </span>
-            {% endif %}
-            {% if issue.milestone %}
-            <span class="card-milestone">📅 {{ issue.milestone.title }}</span>
-            {% endif %}
-          </div>
-          {% if issue._card and issue._card.priority %}
-          <div class="card-priority priority-{{ issue._card.priority|lower }}">{{ issue._card.priority }}</div>
-          {% endif %}
-          {% if issue._card and issue._card.due_date %}
-          <div class="card-due {% if issue._card.due_date < now %}overdue{% endif %}">
-            ⏰ {{ issue._card.due_date[:10] }}
-          </div>
-          {% endif %}
-        </div>
-        {% endfor %}
-      </div>
-    </div>
-    {% endfor %}
-  </div>
+  <!-- Columns (fragment) -->
+  {% include "board_fragment.html" %}
 
   <!-- PRs section -->
   {% if prs %}
@@ -175,15 +113,53 @@
   </div>
   {% endif %}
 </div>
+{% endblock %}
 
+{% block scripts %}
 <script>
-  // Initialize SortableJS
-  document.addEventListener('DOMContentLoaded', initSortable);
-  document.addEventListener('htmx:afterSwap', initSortable);
+  // CSRF helper — set CSRF on all forms after load
+  function refreshCsrfFields() {
+    const csrf = getCSRFToken();
+    document.querySelectorAll('.csrf-token-field').forEach(f => f.value = csrf);
+  }
+  document.addEventListener('DOMContentLoaded', refreshCsrfFields);
 
+  function getCSRFToken() {
+    const match = document.cookie.match(/csrf_token=([^;]+)/);
+    return match ? match[1] : '';
+  }
+
+  async function handleNewIssue(evt, owner, repo) {
+    evt.preventDefault();
+    const form = evt.target;
+    const title = form.title.value.trim();
+    if (!title) return;
+    const body = form.body.value.trim();
+    const labels = form.labels.value;
+    const milestone = form.milestone.value;
+    const assignee = form.assignee.value.trim();
+    const csrf = getCSRFToken();
+
+    const params = new URLSearchParams({ title, body, labels, milestone, assignee });
+    try {
+      const resp = await fetch(`/api/issues/${owner}/${repo}?${params}`, {
+        method: 'POST',
+        headers: { 'X-CSRF-Token': csrf }
+      });
+      if (resp.ok) {
+        window.location.reload();
+      } else {
+        alert('Erreur lors de la création');
+      }
+    } catch(e) {
+      alert('Erreur: ' + e);
+    }
+  }
+
+  // Initialize SortableJS
   function initSortable() {
     document.querySelectorAll('.sortable').forEach(el => {
-      if (el._sortable) return;
+      if (el._sortable) el._sortable.destroy();
       el._sortable = new Sortable(el, {
         group: 'kanban',
         animation: 150,
@@ -194,7 +170,6 @@
           const newColumn = evt.to.dataset.column;
           const owner = evt.to.dataset.owner;
           const repo = evt.to.dataset.repo;
-
           const csrfToken = getCSRFToken();
           try {
             const resp = await fetch(
@@ -203,9 +178,9 @@
             );
             if (!resp.ok) throw new Error('Move failed');
             document.querySelectorAll('.board-column').forEach(col => {
-              const count = col.querySelectorAll('.card').length;
+              const cardCount = col.querySelectorAll('.card').length;
               const badge = col.querySelector('.column-count');
-              if (badge) badge.textContent = count;
+              if (badge) badge.textContent = cardCount;
             });
           } catch (e) {
             console.error('Move failed:', e);
@@ -216,10 +191,8 @@
     });
   }
 
-  function getCSRFToken() {
-    const match = document.cookie.match(/csrf_token=([^;]+)/);
-    return match ? match[1] : '';
-  }
+  document.addEventListener('DOMContentLoaded', initSortable);
+  document.addEventListener('htmx:afterSettle', initSortable);
 
   function openCardDetail(owner, repo, issueId) {
     const modal = document.getElementById('card-modal');
@@ -227,177 +200,76 @@
     content.innerHTML = '<div class="loading">Chargement...</div>';
     document.getElementById('card-modal-title').textContent = `#${issueId} — ${owner}/${repo}`;
     modal.style.display = 'flex';
-
     fetch(`/api/issues/${owner}/${repo}/${issueId}`)
       .then(r => r.json())
-      .then(data => {
-        content.innerHTML = renderCardDetail(owner, repo, data);
-      })
-      .catch(e => {
-        content.innerHTML = `<p class="error">Erreur: ${e}</p>`;
-      });
+      .then(data => { content.innerHTML = renderCardDetail(owner, repo, data); })
+      .catch(e => { content.innerHTML = `<p class="error">Erreur: ${e}</p>`; });
   }
 
-  function closeModal() {
-    document.getElementById('card-modal').style.display = 'none';
-  }
+  function closeModal() { document.getElementById('card-modal').style.display = 'none'; }
 
   function renderCardDetail(owner, repo, data) {
-    const issue = data.issue || {};
-    const comments = data.comments || [];
-    const checklists = data.checklists || [];
-    const card = data.card || {};
-
-    let html = '';
-
-    // Issue header
-    html += `<div class="detail-section">`;
-    html += `<span class="detail-state badge ${issue.state}">${issue.state}</span> `;
-    html += `<strong>${escHtml(issue.title || '')}</strong>`;
-    html += `</div>`;
-
-    // Meta
-    html += `<div class="detail-meta">`;
-    const labels = issue.labels || [];
-    if (labels.length) html += labels.map(l => `<span class="card-label" style="background:#${l.color || '666'}33;color:#${l.color || 'ccc'}">${escHtml(l.name)}</span>`).join(' ');
-    if (issue.milestone) html += `<span>📅 ${escHtml(issue.milestone.title)}</span>`;
-    if (issue.assignee) html += `<span>👤 ${escHtml(issue.assignee.login)}</span>`;
-    html += `</div>`;
-
-    // Priority + Due date (editable)
-    html += `<div class="detail-editable">`;
-    html += `<label>Priorité: <select onchange="updateCardMeta('${owner}','${repo}',${issue.number},this.value,'')" class="form-select-sm">`;
-    ['Low','Medium','High','Urgent'].forEach(p => {
-      html += `<option value="${p}" ${(card.priority||'Medium')===p?'selected':''}>${p}</option>`;
-    });
-    html += `</select></label> `;
-    html += `<label>Échéance: <input type="date" value="${card.due_date||''}" onchange="updateCardMeta('${owner}','${repo}',${issue.number},'',this.value)" class="form-input-sm"></label>`;
-    html += `</div>`;
-
-    // Description
-    html += `<div class="detail-section">`;
-    html += `<h4>Description</h4>`;
-    html += `<div class="markdown-body">${escHtml(issue.body || '')}</div>`;
-    html += `</div>`;
-
-    // Checklists
-    html += `<div class="detail-section">`;
-    html += `<h4>Checklists</h4>`;
+    const issue = data.issue || {}, comments = data.comments || [], checklists = data.checklists || [], card = data.card || {};
+    let h = '';
+    h += `<div class="detail-section"><span class="detail-state badge ${issue.state}">${issue.state}</span> <strong>${escHtml(issue.title||'')}</strong></div>`;
+    h += `<div class="detail-meta">`;
+    (issue.labels||[]).forEach(l => h += `<span class="card-label" style="background:#${l.color||'666'}33;color:#${l.color||'ccc'}">${escHtml(l.name)}</span>`);
+    if (issue.milestone) h += `<span>📅 ${escHtml(issue.milestone.title)}</span>`;
+    if (issue.assignee) h += `<span>👤 ${escHtml(issue.assignee.login)}</span>`;
+    h += `</div>`;
+    h += `<div class="detail-editable"><label>Priorité: <select onchange="updateCardMeta('${owner}','${repo}',${issue.number},this.value,'')" class="form-select-sm">`;
+    ['Low','Medium','High','Urgent'].forEach(p => h += `<option value="${p}" ${(card.priority||'Medium')===p?'selected':''}>${p}</option>`);
+    h += `</select></label> <label>Échéance: <input type="date" value="${card.due_date||''}" onchange="updateCardMeta('${owner}','${repo}',${issue.number},'',this.value)" class="form-input-sm"></label></div>`;
+    h += `<div class="detail-section"><h4>Description</h4><div class="markdown-body">${escHtml(issue.body||'')}</div></div>`;
+    h += `<div class="detail-section"><h4>Checklists</h4>`;
     checklists.forEach(cl => {
-      html += `<div class="checklist">`;
-      html += `<strong>${escHtml(cl.title)}</strong>`;
-      html += `<ul class="checklist-items">`;
-      (cl.items || []).forEach(item => {
-        html += `<li>`;
-        html += `<input type="checkbox" ${item.checked?'checked':''} onchange="toggleCheckItem(${item.id},this.checked)" class="checklist-check">`;
-        html += `<span class="${item.checked?'checked':''}">${escHtml(item.content)}</span>`;
-        html += `<button onclick="deleteCheckItem(${item.id})" class="btn-del" title="Supprimer">×</button>`;
-        html += `</li>`;
+      h += `<div class="checklist"><strong>${escHtml(cl.title)}</strong><ul class="checklist-items">`;
+      (cl.items||[]).forEach(item => {
+        h += `<li><input type="checkbox" ${item.checked?'checked':''} onchange="toggleCheckItem(${item.id},this.checked)" class="checklist-check">`;
+        h += `<span class="${item.checked?'checked':''}">${escHtml(item.content)}</span>`;
+        h += `<button onclick="deleteCheckItem(${item.id})" class="btn-del">×</button></li>`;
       });
-      html += `</ul>`;
-      html += `<div class="add-item">`;
-      html += `<input type="text" id="new-item-${cl.id}" placeholder="Nouvelle tâche..." class="form-input-sm" onkeydown="if(event.key==='Enter')addCheckItem(${cl.id},'${owner}','${repo}',${issue.number})">`;
-      html += `<button onclick="addCheckItem(${cl.id},'${owner}','${repo}',${issue.number})" class="btn btn-sm">+</button>`;
-      html += `</div>`;
-      html += `</div>`;
+      h += `</ul><div class="add-item"><input type="text" id="new-item-${cl.id}" placeholder="Nouvelle tache..." class="form-input-sm" onkeydown="if(event.key==='Enter')addCheckItem(${cl.id},'${owner}','${repo}',${issue.number})">`;
+      h += `<button onclick="addCheckItem(${cl.id},'${owner}','${repo}',${issue.number})" class="btn btn-sm">+</button></div></div>`;
     });
-    if (!checklists.length) {
-      html += `<button onclick="createChecklist('${owner}','${repo}',${issue.number})" class="btn btn-sm">+ Nouvelle checklist</button>`;
-    }
-    html += `</div>`;
-
-    // Comments
-    html += `<div class="detail-section">`;
-    html += `<h4>Commentaires (${comments.length})</h4>`;
-    comments.forEach(c => {
-      html += `<div class="comment">`;
-      html += `<img src="${c.user?.avatar_url||''}" width="24" height="24" class="avatar">`;
-      html += `<strong>${escHtml(c.user?.login||'')}</strong>`;
-      html += `<span class="comment-date">${(c.created_at||'').substr(0,10)}</span>`;
-      html += `<div class="comment-body">${escHtml(c.body||'')}</div>`;
-      html += `</div>`;
-    });
-    html += `</div>`;
-
-    // Actions
-    html += `<div class="detail-actions">`;
-    html += `<a href="${issue.html_url||''}" target="_blank" class="btn btn-sm">🔗 Ouvrir dans Gitea</a>`;
-    html += `<button onclick="editIssueInline('${owner}','${repo}',${issue.number})" class="btn btn-sm">✏️ Éditer</button>`;
-    html += `<button onclick="closeModal()" class="btn btn-sm">Fermer</button>`;
-    html += `</div>`;
-
-    return html;
+    if (!checklists.length) h += `<button onclick="createChecklist('${owner}','${repo}',${issue.number})" class="btn btn-sm">+ Nouvelle checklist</button>`;
+    h += `</div>`;
+    h += `<div class="detail-section"><h4>Commentaires (${comments.length})</h4>`;
+    comments.forEach(c => h += `<div class="comment"><img src="${c.user?.avatar_url||''}" width="24" height="24" class="avatar"><strong>${escHtml(c.user?.login||'')}</strong><span class="comment-date">${(c.created_at||'').substr(0,10)}</span><div class="comment-body">${escHtml(c.body||'')}</div></div>`);
+    h += `</div>`;
+    h += `<div class="detail-actions"><a href="${issue.html_url||''}" target="_blank" class="btn btn-sm">🔗 Ouvrir dans Gitea</a>`;
+    h += `<button onclick="editIssueInline('${owner}','${repo}',${issue.number})" class="btn btn-sm">✏️ Éditer</button>`;
+    h += `<button onclick="closeModal()" class="btn btn-sm">Fermer</button></div>`;
+    return h;
   }
 
   function escHtml(s) { return (s||'').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;'); }
-
-  async function updateCardMeta(owner, repo, issueId, priority, dueDate) {
-    const csrfToken = getCSRFToken();
-    await fetch(`/api/card/${owner}/${repo}/${issueId}?priority=${priority}&due_date=${dueDate}`, {
-      method: 'POST', headers: { 'X-CSRF-Token': csrfToken }
-    });
+  async function updateCardMeta(o,r,i,priority,dueDate) { await fetch(`/api/card/${o}/${r}/${i}?priority=${priority}&due_date=${dueDate}`,{method:'POST',headers:{'X-CSRF-Token':getCSRFToken()}}); }
+  async function toggleCheckItem(id,checked) { await fetch(`/api/checklist-items/${id}?checked=${checked}`,{method:'PATCH',headers:{'X-CSRF-Token':getCSRFToken()}}); }
+  async function deleteCheckItem(id) {
+    await fetch(`/api/checklist-items/${id}`,{method:'DELETE',headers:{'X-CSRF-Token':getCSRFToken()}});
+    const parts=document.getElementById('card-modal-title').textContent.split(' — ');
+    const [ow,rp]=parts[1]?parts[1].split('/'):['',''];
+    if(ow&&rp) openCardDetail(ow,rp,parseInt(parts[0].replace('#','')));
   }
-
-  async function toggleCheckItem(itemId, checked) {
-    const csrfToken = getCSRFToken();
-    await fetch(`/api/checklist-items/${itemId}?checked=${checked}`, {
-      method: 'PATCH', headers: { 'X-CSRF-Token': csrfToken }
-    });
+  async function addCheckItem(cid,o,r,issueId) {
+    const inp=document.getElementById(`new-item-${cid}`);
+    if(!inp||!inp.value.trim())return;
+    await fetch(`/api/checklist-items/${o}/${r}/${issueId}/${cid}?content=${encodeURIComponent(inp.value)}`,{method:'POST',headers:{'X-CSRF-Token':getCSRFToken()}});
+    openCardDetail(o,r,issueId);
   }
-
-  async function deleteCheckItem(itemId) {
-    const csrfToken = getCSRFToken();
-    await fetch(`/api/checklist-items/${itemId}`, {
-      method: 'DELETE', headers: { 'X-CSRF-Token': csrfToken }
-    });
-    // Refresh modal
-    const parts = document.getElementById('card-modal-title').textContent.split(' — ');
-    const issueNum = parts[0].replace('#','');
-    const ownerRepo = parts[1] || '';
-    const [ow, rp] = ownerRepo.split('/');
-    if (ow && rp) openCardDetail(ow, rp, parseInt(issueNum));
+  async function createChecklist(o,r,issueId) { await fetch(`/api/checklists/${o}/${r}/${issueId}`,{method:'POST',headers:{'X-CSRF-Token':getCSRFToken()}}); openCardDetail(o,r,issueId); }
+  async function editIssueInline(o,r,issueId) {
+    const t=prompt('Nouveau titre:',''); if(!t)return;
+    await fetch(`/api/issues/${o}/${r}/${issueId}?title=${encodeURIComponent(t)}`,{method:'PATCH',headers:{'X-CSRF-Token':getCSRFToken()}});
+    closeModal(); window.location.reload();
   }
-
-  async function addCheckItem(checklistId, owner, repo, issueId) {
-    const input = document.getElementById(`new-item-${checklistId}`);
-    if (!input || !input.value.trim()) return;
-    const csrfToken = getCSRFToken();
-    await fetch(`/api/checklist-items/${owner}/${repo}/${issueId}/${checklistId}?content=${encodeURIComponent(input.value)}`, {
-      method: 'POST', headers: { 'X-CSRF-Token': csrfToken }
-    });
-    openCardDetail(owner, repo, issueId);
-  }
-
-  async function createChecklist(owner, repo, issueId) {
-    const csrfToken = getCSRFToken();
-    await fetch(`/api/checklists/${owner}/${repo}/${issueId}`, {
-      method: 'POST', headers: { 'X-CSRF-Token': csrfToken }
-    });
-    openCardDetail(owner, repo, issueId);
-  }
-
-  async function editIssueInline(owner, repo, issueId) {
-    const newTitle = prompt('Nouveau titre:', '');
-    if (!newTitle) return;
-    const csrfToken = getCSRFToken();
-    await fetch(`/api/issues/${owner}/${repo}/${issueId}?title=${encodeURIComponent(newTitle)}`, {
-      method: 'PATCH', headers: { 'X-CSRF-Token': csrfToken }
-    });
-    closeModal();
-    window.location.reload();
-  }
-
-  async function registerWebhook(owner, repo) {
-    const csrfToken = getCSRFToken();
+  async function registerWebhook(o,r) {
     try {
-      const resp = await fetch(`/api/webhook/register/${owner}/${repo}`, {
-        method: 'POST', headers: { 'X-CSRF-Token': csrfToken }
-      });
-      const data = await resp.json();
-      alert(data.status === 'already_registered' ? 'Webhook déjà enregistré ✅' : 'Webhook enregistré ✅');
-    } catch(e) {
-      alert('Erreur: ' + e);
-    }
+      const resp=await fetch(`/api/webhook/register/${o}/${r}`,{method:'POST',headers:{'X-CSRF-Token':getCSRFToken()}});
+      const d=await resp.json();
+      alert(d.status==='already_registered'?'Webhook deja enregistre':'Webhook enregistre');
+    }catch(e){alert('Erreur: '+e);}
   }
 </script>
 {% endblock %}
diff --git a/app/templates/board_fragment.html b/app/templates/board_fragment.html
new file mode 100644
index 0000000..d25f755
--- /dev/null
+++ b/app/templates/board_fragment.html
@@ -0,0 +1,43 @@
+<div class="board-columns" id="board-columns">
+  {% for col in columns %}
+  <div class="board-column" data-column="{{ col }}" id="col-{{ loop.index }}">
+    <div class="column-header">
+      <span class="column-title">{{ col }}</span>
+      <span class="column-count">{{ column_map[col]|length }}</span>
+    </div>
+    <div class="column-cards sortable" data-column="{{ col }}" data-owner="{{ owner }}" data-repo="{{ repo }}">
+      {% for issue in column_map[col] %}
+      <div class="card" data-issue-id="{{ issue.number }}" data-column="{{ col }}" draggable="true"
+           ondblclick="openCardDetail('{{ owner }}','{{ repo }}',{{ issue.number }})">
+        <div class="card-labels">
+          {% for lbl in issue.labels %}
+          <span class="card-label" style="background:#{{ lbl.color or '666' }}33; color:#{{ lbl.color or 'ccc' }}">{{ lbl.name }}</span>
+          {% endfor %}
+        </div>
+        <div class="card-title">
+          <a href="{{ issue.html_url }}" target="_blank" onclick="event.stopPropagation()">#{{ issue.number }}</a>
+          <span class="card-title-text">{{ issue.title[:80] }}{% if issue.title|length > 80 %}...{% endif %}</span>
+        </div>
+        <div class="card-meta">
+          {% if issue.assignee %}
+          <span class="card-assignee" title="{{ issue.assignee.login }}">
+            <img src="{{ issue.assignee.avatar_url }}" alt="" width="16" height="16" class="avatar">
+            {{ issue.assignee.login }}
+          </span>
+          {% endif %}
+          {% if issue.milestone %}
+          <span class="card-milestone">📅 {{ issue.milestone.title }}</span>
+          {% endif %}
+        </div>
+        {% if issue._card and issue._card.priority %}
+        <div class="card-priority priority-{{ issue._card.priority|lower }}">{{ issue._card.priority }}</div>
+        {% endif %}
+        {% if issue._card and issue._card.due_date %}
+        <div class="card-due {% if issue._card.due_date < now %}overdue{% endif %}">⏰ {{ issue._card.due_date[:10] }}</div>
+        {% endif %}
+      </div>
+      {% endfor %}
+    </div>
+  </div>
+  {% endfor %}
+</div>