Release 0.4.3 with contextual help and parcel deduplication

wwwroot/css/app.css

@@ -306,6 +306,73 @@ input[type="checkbox"] {
     padding-top: 9px;
 }
 
+.menu-help {
+    margin-top: 4px;
+    border: 1px solid #c8d3d8;
+    border-radius: 6px;
+    background: #f7fafb;
+    color: var(--ink);
+}
+
+.menu-help summary {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    min-height: 40px;
+    padding: 7px 10px;
+    cursor: pointer;
+    list-style: none;
+    font-size: 12px;
+}
+
+.menu-help summary::-webkit-details-marker {
+    display: none;
+}
+
+.menu-help summary > span {
+    display: grid;
+    place-items: center;
+    width: 22px;
+    height: 22px;
+    border: 1px solid #82949d;
+    border-radius: 50%;
+    color: #42535c;
+    font-weight: 900;
+}
+
+.menu-help summary::after {
+    margin-left: auto;
+    content: "\25BE";
+    color: #52636b;
+    font-size: 14px;
+    transition: transform 140ms ease;
+}
+
+.menu-help[open] summary::after {
+    transform: rotate(180deg);
+}
+
+.menu-help-content {
+    padding: 10px 12px 12px;
+    border-top: 1px solid #d8e0e4;
+    font-size: 11px;
+    line-height: 1.45;
+}
+
+.menu-help-content p {
+    margin: 0 0 8px;
+    font-weight: 700;
+}
+
+.menu-help-content ol {
+    margin: 0;
+    padding-left: 18px;
+}
+
+.menu-help-content li + li {
+    margin-top: 6px;
+}
+
 .layer-tree-section {
     display: grid;
     gap: 6px;