fix: menu contextuel right-click + long-press mobile

Desktop:
- @contextmenu.prevent corrigé: window._wsData → onContextMenu()
  (window._wsData n'existait pas, le handler était mort)

Mobile:
- @touchstart/@touchmove/@touchend ajoutés sur ws-split
- Détection long-press: >600ms sans mouvement >10px
- Recherche du [data-ws-id] le plus proche
- Appel onContextMenu avec les coordonnées tactiles

Fermeture:
- @click.outside ajouté sur .ctx-menu
- @click.self maintenu sur ws-split pour fermer en cliquant ailleurs

app/templates/local_workspace.html

@@ -780,6 +780,46 @@ window._wsInitData = (function() {
       });
     },
 
+    // ── Long-press (mobile context menu) ──
+    _touchStartX: 0,
+    _touchStartY: 0,
+    _touchStartTime: 0,
+    _touchMoved: false,
+    _touchTarget: null,
+    onTouchStart(ev) {
+      if (!ev.touches || ev.touches.length !== 1) return;
+      this._touchStartX = ev.touches[0].clientX;
+      this._touchStartY = ev.touches[0].clientY;
+      this._touchStartTime = Date.now();
+      this._touchMoved = false;
+      this._touchTarget = ev.target;
+    },
+    onTouchMove(ev) {
+      if (!ev.touches || ev.touches.length !== 1) return;
+      var dx = Math.abs(ev.touches[0].clientX - this._touchStartX);
+      var dy = Math.abs(ev.touches[0].clientY - this._touchStartY);
+      if (dx > 10 || dy > 10) this._touchMoved = true;
+    },
+    onTouchEnd(ev) {
+      if (this._touchMoved) return;
+      var elapsed = Date.now() - this._touchStartTime;
+      if (elapsed < 600) return;
+      // Long press detected — find target element
+      var el = this._touchTarget;
+      if (!el) return;
+      var idEl = el.closest('[data-ws-id]');
+      if (!idEl) return;
+      // Prevent default context menu if it hasn't fired yet
+      ev.preventDefault();
+      var fakeEv = {
+        clientX: this._touchStartX,
+        clientY: this._touchStartY,
+        target: idEl,
+        preventDefault: function(){}
+      };
+      this.onContextMenu(fakeEv);
+    },
+
     ctxAddExistingTag(tag) {
       this.ctxAddNewTag(tag.name, tag.color);
     },
@@ -1885,8 +1925,11 @@ console.log('FLOWDECK v2.4.6 — IIFE done, _wsInitData keys:', Object.keys(wind
 <script>console.log('FLOWDECK v2.4.6 — ws-split about to render, _wsInitData exists:', typeof window._wsInitData !== 'undefined');</script>
 
 <div class="ws-split"
-     @contextmenu.prevent="if(window._wsData) window._wsData.onContextMenu($event)"
+     @contextmenu.prevent="onContextMenu($event)"
      @click.self="ctxMenu.visible = false"
+     @touchstart="onTouchStart($event)"
+     @touchend="onTouchEnd($event)"
+     @touchmove="onTouchMove($event)"
      tabindex="0"
      x-ref="layout">
   <div class="ws-main">
@@ -2313,6 +2356,7 @@ console.log('FLOWDECK v2.4.6 — IIFE done, _wsInitData keys:', Object.keys(wind
   <!-- Context menu -->
   <div class="ctx-menu" x-show="ctxMenu.visible"
        :style="{ left: ctxMenu.x + 'px', top: ctxMenu.y + 'px' }"
+       @click.outside="ctxMenu.visible=false"
        @keydown.escape="ctxMenu.visible=false"
        x-transition>
     <div class="ctx-item" @click="ctxMenuOpenPage()">📄 Open</div>