diff --git a/widget/src/app.js b/widget/src/app.js
index 960568f..2a0f8ed 100644
--- a/widget/src/app.js
+++ b/widget/src/app.js
@@ -294,6 +294,39 @@ function renderTasksList() {
     content.appendChild(title);
     content.appendChild(date);
     
+    // Container d'actions (Edit / Delete)
+    const actions = document.createElement("div");
+    actions.className = "task-actions";
+    
+    // Bouton Modifier
+    const btnEdit = document.createElement("button");
+    btnEdit.className = "btn-task-action btn-edit";
+    btnEdit.title = "Modifier la tâche";
+    btnEdit.innerHTML = `<svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"/><path d="M18.5 2.5a2.121 2.121 0 1 1 3 3L12 15l-4 1 1-4z"/></svg>`;
+    btnEdit.addEventListener("click", (e) => {
+      e.stopPropagation();
+      startEditingTask(task.id, card, title, task.title);
+    });
+    
+    // Double-clic sur le titre pour éditer également
+    title.addEventListener("dblclick", (e) => {
+      e.stopPropagation();
+      startEditingTask(task.id, card, title, task.title);
+    });
+    
+    // Bouton Supprimer
+    const btnDelete = document.createElement("button");
+    btnDelete.className = "btn-task-action btn-delete";
+    btnDelete.title = "Supprimer la tâche";
+    btnDelete.innerHTML = `<svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/><line x1="10" y1="11" x2="10" y2="17"/><line x1="14" y1="11" x2="14" y2="17"/></svg>`;
+    btnDelete.addEventListener("click", (e) => {
+      e.stopPropagation();
+      deleteTask(task.id);
+    });
+    
+    actions.appendChild(btnEdit);
+    actions.appendChild(btnDelete);
+    
     // Badge de statut (En cours / À faire)
     const badge = document.createElement("span");
     
@@ -314,6 +347,7 @@ function renderTasksList() {
     
     card.appendChild(checkbox);
     card.appendChild(content);
+    card.appendChild(actions);
     card.appendChild(badge);
     
     tasksList.appendChild(card);
@@ -337,3 +371,87 @@ function formatDate(dateString) {
     return dateString;
   }
 }
+
+// --- NOUVELLES FONCTIONS DE SUPPRESSION ET MODIFICATION ---
+
+function startEditingTask(taskId, card, titleElement, currentTitle) {
+  if (card.classList.contains("editing")) return;
+  card.classList.add("editing");
+  
+  const input = document.createElement("input");
+  input.type = "text";
+  input.className = "task-edit-input";
+  input.value = currentTitle;
+  input.maxLength = 100;
+  
+  titleElement.innerHTML = "";
+  titleElement.appendChild(input);
+  input.focus();
+  input.select();
+  
+  const finishEditing = async (save) => {
+    const newTitle = input.value.trim();
+    card.classList.remove("editing");
+    
+    if (save && newTitle && newTitle !== currentTitle) {
+      titleElement.textContent = newTitle;
+      await updateTaskTitle(taskId, newTitle);
+    } else {
+      titleElement.textContent = currentTitle;
+    }
+  };
+  
+  input.addEventListener("keydown", (e) => {
+    if (e.key === "Enter") {
+      finishEditing(true);
+    } else if (e.key === "Escape") {
+      finishEditing(false);
+    }
+  });
+  
+  input.addEventListener("blur", () => {
+    finishEditing(true);
+  });
+  
+  input.addEventListener("click", (e) => e.stopPropagation());
+}
+
+async function updateTaskTitle(taskId, newTitle) {
+  try {
+    const response = await fetch(`${state.apiUrl}/api/v1/tasks/${taskId}`, {
+      method: "PUT",
+      headers: {
+        "Content-Type": "application/json",
+        "X-API-Key": state.apiKey
+      },
+      body: JSON.stringify({
+        title: newTitle
+      })
+    });
+    
+    if (!response.ok) throw new Error("Échec de la mise à jour");
+    fetchTasks();
+  } catch (error) {
+    console.error("Erreur de mise à jour du titre :", error);
+    alert("Impossible de modifier la tâche.");
+  }
+}
+
+async function deleteTask(taskId) {
+  if (!confirm("Voulez-vous vraiment supprimer cette tâche ?")) return;
+  
+  try {
+    const response = await fetch(`${state.apiUrl}/api/v1/tasks/${taskId}`, {
+      method: "DELETE",
+      headers: {
+        "X-API-Key": state.apiKey
+      }
+    });
+    
+    if (!response.ok) throw new Error("Échec de la suppression");
+    fetchTasks();
+  } catch (error) {
+    console.error("Erreur de suppression de la tâche :", error);
+    alert("Impossible de supprimer la tâche.");
+  }
+}
diff --git a/widget/src/style.css b/widget/src/style.css
index 72c20cd..93c9327 100644
--- a/widget/src/style.css
+++ b/widget/src/style.css
@@ -573,3 +573,58 @@ body {
   background: hsl(250, 85%, 58%);
   box-shadow: 0 0 10px var(--accent-indigo-glow);
 }
+
+/* --- BOUTONS ACTIONS DES TÂCHES (MODIFIER / SUPPRIMER) --- */
+.task-actions {
+  display: flex;
+  gap: 6px;
+  margin-right: 8px;
+  opacity: 0;
+  transition: opacity 0.2s ease;
+}
+
+.task-card:hover .task-actions {
+  opacity: 1;
+}
+
+.btn-task-action {
+  background: transparent;
+  border: none;
+  color: var(--text-secondary);
+  cursor: pointer;
+  width: 22px;
+  height: 22px;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.2s ease;
+}
+
+.btn-task-action:hover {
+  background: rgba(255, 255, 255, 0.08);
+  color: var(--text-primary);
+}
+
+.btn-task-action.btn-delete:hover {
+  background: rgba(239, 68, 68, 0.15);
+  color: hsl(0, 80%, 65%);
+}
+
+.btn-task-action svg {
+  pointer-events: none; /* Évite d'interférer avec le clic */
+}
+
+/* Style de l'input d'édition en ligne */
+.task-edit-input {
+  background: rgba(255, 255, 255, 0.1);
+  border: 1px solid var(--accent-indigo);
+  border-radius: 6px;
+  color: var(--text-primary);
+  font-size: 13px;
+  font-family: inherit;
+  padding: 2px 6px;
+  width: 100%;
+  outline: none;
+  box-shadow: 0 0 8px var(--accent-indigo-glow);
+}