Enhance tool call and add new models

* Refine tool call UX for MCP
* Add new claude 4 and Gemini 2.5 Pro models
* Fix tool call schema issues for OpenAI/AzureOpenAI o-series models

Author: feiskyer

CHANGELOG.md

@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## v4.9.0
+
+* Refine tool call UX for MCP
+* Add new claude 4 and Gemini 2.5 Pro models
+* Fix tool call schema issues for OpenAI/AzureOpenAI o-series models
+
 ## v4.8.3
 
 * Add request headers

media/main.css

@@ -721,4 +721,113 @@ h2.mb-5 {
 
 h2.mb-3 {
     margin-bottom: 0.1rem !important;
+}
+
+/* Tool Call Block Styles */
+.tool-call-block {
+    background: var(--vscode-textCodeBlock-background);
+    border-radius: 6px;
+    margin: 1em 0;
+    border: 1px solid var(--vscode-input-border);
+}
+
+.tool-call-header {
+    padding: 8px 12px;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    user-select: none;
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 6px 6px 0 0;
+}
+
+.tool-call-header:hover {
+    background: rgba(255, 255, 255, 0.08);
+}
+
+.tool-name {
+    font-weight: 500;
+}
+
+.tool-call-content {
+    padding: 12px;
+    display: block;
+}
+
+.tool-call-collapsed {
+    display: none;
+}
+
+.tool-call-caret {
+    transition: transform 0.2s ease;
+    width: 12px;
+    height: 12px;
+}
+
+.tool-call-header.collapsed .tool-call-caret {
+    transform: rotate(-90deg);
+}
+
+.tool-call-args,
+.tool-call-result {
+    margin-bottom: 12px;
+}
+
+.tool-section-label {
+    font-size: 0.9em;
+    color: var(--vscode-descriptionForeground);
+    margin-bottom: 4px;
+    font-weight: 500;
+}
+
+.tool-result-pending {
+    font-style: italic;
+    color: var(--vscode-disabledForeground);
+}
+
+.tool-result-empty {
+    font-style: italic;
+    color: var(--vscode-disabledForeground);
+    padding: 4px 0;
+}
+
+.tool-call-content pre {
+    margin: 0.5em 0;
+}
+
+.tool-call-content code {
+    font-family: var(--vscode-editor-font-family);
+    font-size: 0.9em;
+}
+
+/* Styles for tool result content */
+.tool-call-result img {
+    max-width: 100%;
+}
+
+.tool-call-result p {
+    margin: 0.5em 0;
+}
+
+.tool-call-result ul,
+.tool-call-result ol {
+    margin: 0.5em 0;
+    padding-left: 2em;
+}
+
+.tool-name {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+}
+
+.tool-icon {
+    width: 14px;
+    height: 14px;
+}
+
+/* Hide tool-result elements */
+tool-result {
+    display: none;
 }

media/main.js

@@ -139,29 +139,33 @@
 
             case "addResponse":
                 let existingMessage = message.id && document.getElementById(message.id);
-                let updatedValue = "";
 
                 const unEscapeHtml = (unsafe) => {
                     return unsafe.replaceAll('&amp;', '&').replaceAll('&lt;', '<').replaceAll('&gt;', '>').replaceAll('&quot;', '"').replaceAll('&#039;', "'");
                 };
 
-                if (!message.responseInMarkdown) {
-                    updatedValue = "```\r\n" + unEscapeHtml(message.value) + " \r\n ```";
-                } else {
-                    updatedValue = message.value.split("```").length % 2 === 1 ? message.value : message.value + "\n\n```\n\n";
-                }
-
-                const markedResponse = marked.parse(updatedValue.trim().replace(/^\s+|\s+$/g, ''));
+                // Check if this update contains any tool-result tags
+                const tempDiv = document.createElement('div');
+                tempDiv.innerHTML = message.value;
+                const hasToolResult = tempDiv.querySelector('tool-result');
 
+                let updatedValue = message.value.split("```").length % 2 === 1 ? message.value : message.value + "\n\n```\n\n";
+                let formattedResponse = marked.parse(updatedValue.trim().replace(/^\s+|\s+$/g, ''));
                 if (existingMessage) {
-                    existingMessage.innerHTML = markedResponse;
+                    existingMessage.innerHTML = formattedResponse;
                 } else {
                     list.innerHTML +=
                         `<div class="p-4 self-end mt-2 pb-4 answer-element-ext">
-                        <div class="result-streaming" id="${message.id}">${markedResponse}</div>
+                        <div class="result-streaming" id="${message.id}">${formattedResponse}</div>
                     </div>`;
                 }
 
+                // Initialize tool call blocks with collapsed state
+                const toolCallBlocks = list.querySelectorAll('.tool-call-header:not(.initialized)');
+                toolCallBlocks.forEach(header => {
+                    header.classList.add('collapsed', 'initialized');
+                });
+
                 if (message.done) {
                     const preCodeList = list.lastChild.querySelectorAll("pre > code");