fix(editor): le bouton Sauvegarder ne reste plus bloque sur le spinner (BUG-054)

frontend/js/utils.js

@@ -365,6 +365,9 @@ function escapeHtml(str) {
 async function openEditor(vaultName, filePath) {
   state.editorVault = vaultName;
   state.editorPath = filePath;
+  // A previous session may have left the shared save button in its spinner
+  // state (manual save, Forge, failed request). BUG-054.
+  resetSaveButton();
 
   const modal = document.getElementById("editor-modal");
   const titleInput = document.getElementById("editor-title-input");
@@ -582,6 +585,7 @@ function closeEditor() {
   const modal = document.getElementById("editor-modal");
   if (!modal) return;
   modal.classList.remove("active");
+  resetSaveButton();
   stopCollab();
   if (state.editorView) {
     state.editorView.destroy();
@@ -683,6 +687,26 @@ async function reloadExternalWrite(vault, path) {
   }
 }
 
+/**
+ * Restore the save button to its idle state (checkmark, enabled).
+ *
+ * The button (`#editor-save`) is a single shared DOM node reused across every
+ * edition session, including inline mode where it travels with the editor
+ * container. A manual save swaps its content for a spinner and disables it; if
+ * that state is not cleared on success/failure, the spinner leaks into the next
+ * session and only a full page reload (which re-parses index.html) brings the
+ * checkmark back. BUG-054.
+ */
+function resetSaveButton() {
+  const saveBtn = document.getElementById("editor-save");
+  if (!saveBtn) return;
+  saveBtn.disabled = false;
+  saveBtn.innerHTML = '✓';
+  saveBtn.style.background = '';
+  saveBtn.style.color = '';
+  saveBtn.style.borderColor = '';
+}
+
 async function saveFile(silent = false) {
   // If Forge is open, delegate save to the iframe
   var forgeFrame = document.getElementById("forge-iframe");
@@ -750,6 +774,7 @@ async function saveFile(silent = false) {
     }
   } catch (err) {
     console.error("Save error:", err);
+    resetSaveButton();
     if (saveDot) { saveDot.className = 'editor-save-dot err'; }
     if (saveLabel) saveLabel.textContent = 'Erreur';
     // If offline, queue the save for later sync