feat: add dismiss (×) button to all toast notifications (#1355) (#1755)

* feat: add dismiss (×) button to all toast notifications (#1355)

* Refresh README presentation

* fix: reset pointer-events on toast dismiss button click

Action toasts set pointer-events:auto on #toast for their clickable
button, but the × close-button handler only cleared the auto-hide timer
without resetting pointer-events. This left an invisible fixed overlay
blocking clicks in the top-right area after manual dismissal.

- Add pointerEvents reset in both showToast and showError close handlers
- Add DOM behavior tests for pointer-events across all toast types

---------

Co-authored-by: pewdiepie-archdaemon <pewdiepie-archdaemon@users.noreply.github.com>

static/js/ui.js

@@ -340,19 +340,12 @@ export function showToast(msg, durationOrOpts) {
     stack.style.cssText = 'display:inline-flex;flex-direction:column;align-items:center;gap:1px;margin-left:10px;line-height:1;';
 
     const btn = document.createElement('button');
-    // If the caller supplied an SVG icon, prepend it. We trust the icon string
-    // (only set internally) — never accept caller-controlled HTML otherwise.
     if (actionIcon) {
       btn.innerHTML = `<span style="display:inline-flex;align-items:center;gap:5px;">${actionIcon}<span></span></span>`;
       btn.querySelector('span span').textContent = actionLabel;
     } else {
       btn.textContent = actionLabel;
     }
-    // The toast itself is `pointer-events: none` so it doesn't block clicks
-    // beneath it. With an action button we need to flip both the toast AND
-    // the button so the user can actually click Undo. The flag is reset on
-    // the next plain showToast / showError call (those overwrite textContent
-    // which strips the button + we clear inline style at the top below).
     btn.style.cssText = 'padding:2px 10px;border:1px solid var(--fg);border-radius:4px;background:none;color:var(--fg);cursor:pointer;font-size:12px;pointer-events:auto;display:inline-flex;align-items:center;';
     btn.addEventListener('click', (e) => {
       e.stopPropagation();
@@ -362,8 +355,6 @@ export function showToast(msg, durationOrOpts) {
     });
     stack.appendChild(btn);
 
-    // Keyboard-shortcut hints (Ctrl+Z / ⌘Z) are meaningless on touch devices —
-    // skip them on mobile so the toast just shows the Undo button.
     if (actionHint && window.innerWidth > 768) {
       const hint = document.createElement('span');
       hint.textContent = actionHint;
@@ -372,32 +363,28 @@ export function showToast(msg, durationOrOpts) {
     }
 
     toastEl.appendChild(stack);
-
-    // Small × to dismiss the toast without taking the action. Useful when
-    // the user already acted (or just doesn't want the banner sitting there).
-    const closeBtn = document.createElement('button');
-    closeBtn.type = 'button';
-    closeBtn.setAttribute('aria-label', 'Dismiss');
-    closeBtn.title = 'Dismiss';
-    closeBtn.textContent = '×';
-    closeBtn.style.cssText = 'margin-left:8px;padding:0;width:20px;height:20px;line-height:1;border:none;background:none;color:var(--fg);opacity:0.55;cursor:pointer;font-size:18px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;pointer-events:auto;';
-    closeBtn.addEventListener('mouseenter', () => { closeBtn.style.opacity = '1'; });
-    closeBtn.addEventListener('mouseleave', () => { closeBtn.style.opacity = '0.55'; });
-    closeBtn.addEventListener('click', (e) => {
-      e.stopPropagation();
-      e.preventDefault();
-      clearTimeout(toastEl._hideTimer);
-      toastEl.classList.add('exiting');
-      toastEl.classList.remove('show');
-    });
-    toastEl.appendChild(closeBtn);
-
     toastEl.style.pointerEvents = 'auto';
   } else {
-    // No action — restore the default non-blocking behavior.
     toastEl.style.pointerEvents = '';
   }
 
+  // Close button for all toasts — dismiss without waiting for timeout.
+  const closeBtn = document.createElement('button');
+  closeBtn.type = 'button';
+  closeBtn.className = 'toast-close-btn';
+  closeBtn.setAttribute('aria-label', 'Dismiss');
+  closeBtn.title = 'Dismiss';
+  closeBtn.textContent = '×';
+  closeBtn.addEventListener('click', (e) => {
+    e.stopPropagation();
+    e.preventDefault();
+    clearTimeout(toastEl._hideTimer);
+    toastEl.classList.add('exiting');
+    toastEl.classList.remove('show');
+    toastEl.style.pointerEvents = '';
+  });
+  toastEl.appendChild(closeBtn);
+
   // Pin to top-right via CSS — clear any legacy inline overrides so the
   // slide-in-from-right / slide-out-to-left transition can run cleanly.
   toastEl.style.left = '';
@@ -428,17 +415,38 @@ export function showError(msg) {
     toastEl = document.getElementById('toast');
   }
   _wireToastSwipe(toastEl);
-  toastEl.textContent = msg;
+  toastEl.textContent = '';
   toastEl.classList.add('error');
   toastEl.style.left = '';
   toastEl.style.transform = '';
   toastEl.classList.remove('exiting');
   toastEl.classList.add('show');
   clearTimeout(toastEl._hideTimer);
+
+  const textSpan = document.createElement('span');
+  textSpan.textContent = msg;
+  toastEl.appendChild(textSpan);
+
+  const closeBtn = document.createElement('button');
+  closeBtn.type = 'button';
+  closeBtn.className = 'toast-close-btn';
+  closeBtn.setAttribute('aria-label', 'Dismiss');
+  closeBtn.title = 'Dismiss';
+  closeBtn.textContent = '×';
+  closeBtn.addEventListener('click', (e) => {
+    e.stopPropagation();
+    e.preventDefault();
+    clearTimeout(toastEl._hideTimer);
+    toastEl.classList.add('exiting');
+    toastEl.classList.remove('show');
+    toastEl.style.pointerEvents = '';
+  });
+  toastEl.appendChild(closeBtn);
+
   toastEl._hideTimer = setTimeout(() => {
     toastEl.classList.add('exiting');
     toastEl.classList.remove('show');
-  }, 3000);
+  }, 6000);
 }
 
 /**