feat: init sproutclaw-web — Go+Gin backend + React frontend

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/chat/ToolCallBlock.module.css

@@ -0,0 +1,70 @@
+.collapsible {
+  margin: 0;
+}
+
+.summary {
+  list-style: none;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 6px 10px;
+  user-select: none;
+  font-weight: 500;
+  color: #555;
+}
+
+.summary::-webkit-details-marker {
+  display: none;
+}
+
+.summary::before {
+  content: "";
+  width: 0;
+  height: 0;
+  border-left: 5px solid #888;
+  border-top: 3.5px solid transparent;
+  border-bottom: 3.5px solid transparent;
+  flex-shrink: 0;
+  transform: rotate(0deg);
+  transition: transform 0.15s ease;
+}
+
+.collapsible[open] > .summary::before {
+  transform: rotate(90deg);
+}
+
+.summaryText {
+  min-width: 0;
+  flex: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.detail {
+  margin: 0;
+  padding: 6px 10px 8px;
+  border-top: 1px solid #eee;
+}
+
+.detailPre {
+  margin: 0;
+  padding: 0;
+  white-space: pre-wrap;
+  word-break: break-word;
+  font-size: inherit;
+  line-height: inherit;
+}
+
+.detailPre :global(.diffAdd) {
+  color: #15803d;
+}
+
+.detailPre :global(.diffDel) {
+  color: #b91c1c;
+}
+
+.detailPre :global(.diffMeta) {
+  color: #6b7280;
+}