feat(vscode-ide-companion/extension): relay diff accept/cancel events to chat webview

Added functionality to relay diff accepted/cancelled events from the IDE to the chat webview
so users get immediate feedback when they accept or cancel diffs in the Claude Code style.

packages/vscode-ide-companion/src/webview/components/toolcalls/Search/SearchToolCall.tsx

@@ -30,7 +30,7 @@ export const SearchToolCall: React.FC<BaseToolCallProps> = ({ toolCall }) => {
   const queryText = safeTitle(title);
 
   // Group content by type
-  const { errors } = groupContent(content);
+  const { errors, textOutputs } = groupContent(content);
 
   // Error case: show search query + error in card layout
   if (errors.length > 0) {
@@ -77,6 +77,31 @@ export const SearchToolCall: React.FC<BaseToolCallProps> = ({ toolCall }) => {
     );
   }
 
+  // Show content text if available (e.g., "Listed 4 item(s).")
+  if (textOutputs.length > 0) {
+    const containerStatus = mapToolStatusToContainerStatus(toolCall.status);
+    return (
+      <ToolCallContainer
+        label="Search"
+        status={containerStatus}
+        className="search-toolcall"
+        labelSuffix={queryText ? `(${queryText})` : undefined}
+      >
+        <div className="flex flex-col">
+          {textOutputs.map((text, index) => (
+            <div
+              key={index}
+              className="inline-flex text-[var(--app-secondary-foreground)] text-[0.85em] opacity-70 mt-[2px] mb-[2px] flex-row items-start w-full gap-1"
+            >
+              <span className="flex-shrink-0 relative top-[-0.1em]">⎿</span>
+              <span className="flex-shrink-0 w-full">{text}</span>
+            </div>
+          ))}
+        </div>
+      </ToolCallContainer>
+    );
+  }
+
   // No results - show query only
   if (queryText) {
     const containerStatus = mapToolStatusToContainerStatus(toolCall.status);