fix(update): fast direct HTTP check & force cache bypass on check click (v1.3.7)

public/assets/app.js

@@ -5745,11 +5745,17 @@ async function checkSystemUpdate(notify = false) {
                 return;
             } catch (_) {}
         }
+    } else {
+        localStorage.removeItem(STORAGE_KEY_TIME);
+        localStorage.removeItem(STORAGE_KEY_DATA);
     }
 
+    let origBtnHtml = null;
     if (btnCheck) {
         btnCheck.disabled = true;
         btnCheck.classList.add('opacity-50');
+        origBtnHtml = btnCheck.innerHTML;
+        btnCheck.innerHTML = `<svg class="animate-spin w-4 h-4 text-cyan-400" fill="none" viewBox="0 0 24 24"><circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle><path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v8H4z"></path></svg><span>Vérification en cours...</span>`;
     }
 
     try {
@@ -5777,6 +5783,7 @@ async function checkSystemUpdate(notify = false) {
         if (btnCheck) {
             btnCheck.disabled = false;
             btnCheck.classList.remove('opacity-50');
+            if (origBtnHtml) btnCheck.innerHTML = origBtnHtml;
         }
     }