fix: mobile polish — tap-to-deselect and toast positioning

Co-Authored-By: Claude Opus 4.6 <[email protected]>

unredact/static/main.js

@@ -514,6 +514,11 @@ canvas.addEventListener("mousedown", (e) => {
   if (hit) {
     e.stopPropagation();
     activateRedaction(hit.id);
+  } else if (isMobile() && state.activeRedaction) {
+    state.activeRedaction = null;
+    closePopover();
+    renderRedactionList();
+    renderCanvas();
   }
 });
 

unredact/static/style.css

@@ -956,6 +956,11 @@ main {
   /* Delete button: always visible on touch (no hover) */
   .redaction-delete { opacity: 1; }
 
+  /* Toast: position above sheet */
+  #toast-container {
+    bottom: calc(var(--sheet-height, 60px) + 1rem);
+  }
+
   /* Viewer section needs bottom margin for sheet peek height */
   #viewer-section {
     padding-bottom: var(--sheet-height, 60px);