SCAL-336134: Add developer examples related to chat history for spotter mcp server

mcp/python-react-agent-simple-ui/client/package.json

@@ -9,7 +9,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "@thoughtspot/visual-embed-sdk": "^1.45.3-mcp.2",
+    "@thoughtspot/visual-embed-sdk": "^1.51.1",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-markdown": "^10.1.0",

mcp/python-react-agent-simple-ui/client/src/App.css

@@ -1,12 +1,42 @@
+/* Light is the base palette. Only the tokens change under a dark system theme -
+   every rule below is written against these variables, so nothing else forks. */
 :root {
+  color-scheme: light dark;
+
   --primary: #4f46e5;
   --primary-light: #eef2ff;
+  --primary-ring: rgba(79, 70, 229, 0.08);
   --bg: #f9fafb;
   --surface: #ffffff;
   --text: #111827;
   --text-secondary: #6b7280;
   --border: #e5e7eb;
   --error: #ef4444;
+  --hover: rgba(0, 0, 0, 0.05);
+  --hover-strong: rgba(0, 0, 0, 0.08);
+  --code-bg: #1f2937;
+  --code-text: #f9fafb;
+  --delete-hover: #c0392b;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    /* Indigo lightened so it keeps contrast against the dark surface. */
+    --primary: #818cf8;
+    --primary-light: #312e81;
+    --primary-ring: rgba(129, 140, 248, 0.15);
+    --bg: #0f1115;
+    --surface: #171a21;
+    --text: #e8eaed;
+    --text-secondary: #9aa0a6;
+    --border: #2a2f3a;
+    --error: #f87171;
+    --hover: rgba(255, 255, 255, 0.06);
+    --hover-strong: rgba(255, 255, 255, 0.1);
+    --code-bg: #0b0d11;
+    --code-text: #e8eaed;
+    --delete-hover: #f87171;
+  }
 }
 
 * {
@@ -226,8 +256,8 @@ body {
 }
 
 .bubble pre {
-  background: #1f2937;
-  color: #f9fafb;
+  background: var(--code-bg);
+  color: var(--code-text);
   padding: 14px 16px;
   border-radius: 8px;
   overflow-x: auto;
@@ -341,7 +371,7 @@ body {
 
 .input-inner:focus-within {
   border-color: var(--primary);
-  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.08);
+  box-shadow: 0 0 0 3px var(--primary-ring);
 }
 
 .input-inner textarea {
@@ -406,3 +436,124 @@ body {
     font-size: 19px;
   }
 }
+
+/* MCP answer frames — rendered by startAutoMCPFrameRenderer */
+.answer {
+  margin: 12px 0;
+}
+
+.answer figcaption {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--text-secondary);
+  margin-bottom: 6px;
+}
+
+.answer > div {
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  overflow: hidden;
+  background: var(--surface);
+}
+
+.answer iframe {
+  display: block;
+  width: 100%;
+  border: none;
+}
+
+/* ---- Chat history sidebar ---- */
+
+.shell {
+  display: flex;
+  height: 100vh;
+}
+
+.shell .app {
+  flex: 1;
+  min-width: 0;
+}
+
+.sidebar {
+  width: 260px;
+  flex-shrink: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 14px;
+  background: var(--surface);
+  border-right: 1px solid var(--border);
+  overflow: hidden;
+}
+
+.sidebar-new {
+  width: 100%;
+}
+
+.sidebar-empty {
+  font-size: 13px;
+  color: var(--text-secondary);
+  padding: 4px 8px;
+}
+
+.conversation-list {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  overflow-y: auto;
+}
+
+.conversation {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  width: 100%;
+  padding: 8px 10px;
+  border: none;
+  border-radius: 8px;
+  background: transparent;
+  color: inherit;
+  font: inherit;
+  font-size: 13px;
+  text-align: left;
+  cursor: pointer;
+}
+
+.conversation:hover:not(:disabled) {
+  background: var(--hover);
+}
+
+.conversation.active {
+  background: var(--hover-strong);
+  font-weight: 600;
+}
+
+.conversation:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+.conversation-title {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.conversation-delete {
+  flex-shrink: 0;
+  opacity: 0;
+  padding: 0 4px;
+  font-size: 16px;
+  line-height: 1;
+  color: var(--text-secondary);
+}
+
+.conversation:hover .conversation-delete {
+  opacity: 1;
+}
+
+.conversation-delete:hover {
+  color: var(--delete-hover);
+}