fix: expose mcp tool calls in trace events

src/backend/codex-stdio.ts

@@ -849,7 +849,7 @@ function isSuppressedCodexStatusNotification(method: string): boolean {
 }
 
 function isVisibleCodexToolItemType(itemType: string): boolean {
-  return itemType === "commandExecution" || itemType === "webSearch";
+  return itemType === "commandExecution" || itemType === "webSearch" || itemType === "mcpToolCall" || itemType === "dynamicToolCall";
 }
 
 function assistantMessageEventForCompleted(message: CompletedAssistantMessage, messageIndex: number): BackendEvent {
@@ -944,9 +944,10 @@ function toolCallPayload(method: string, item: JsonRecord): JsonRecord {
   const redacted = redactJson(item);
   const itemId = typeof redacted.id === "string" ? redacted.id : null;
   const itemType = typeof redacted.type === "string" ? redacted.type : "unknown";
-  const command = typeof redacted.command === "string" ? redacted.command : null;
+  const toolName = toolCallName(redacted, itemType);
+  const command = toolCallCommandSummary(redacted, itemType, toolName);
   const cwd = typeof redacted.cwd === "string" ? redacted.cwd : null;
-  const status = typeof redacted.status === "string" ? redacted.status : null;
+  const status = toolCallStatus(method, redacted);
   const processId = typeof redacted.processId === "string" || typeof redacted.processId === "number" ? String(redacted.processId) : null;
   const exitCode = typeof redacted.exitCode === "number" ? redacted.exitCode : null;
   const durationMs = typeof redacted.durationMs === "number" ? redacted.durationMs : null;
@@ -955,7 +956,7 @@ function toolCallPayload(method: string, item: JsonRecord): JsonRecord {
     method,
     itemId,
     type: itemType,
-    toolName: itemType,
+    toolName,
     ...(command ? { command } : {}),
     ...(cwd ? { cwd } : {}),
     ...(status ? { status } : {}),
@@ -967,6 +968,47 @@ function toolCallPayload(method: string, item: JsonRecord): JsonRecord {
   };
 }
 
+function toolCallStatus(method: string, item: JsonRecord): string | null {
+  if (typeof item.status === "string" && item.status.trim().length > 0) return item.status;
+  if (method === "item/started") return "started";
+  if (method === "item/completed") return "completed";
+  return null;
+}
+
+function toolCallName(item: JsonRecord, itemType: string): string {
+  const direct = firstToolCallString(item, ["toolName", "name", "tool", "functionName"]);
+  const server = firstToolCallString(item, ["serverName", "server", "mcpServer"]);
+  if (server && direct && !direct.includes(server)) return `${server}.${direct}`;
+  return direct ?? itemType;
+}
+
+function toolCallCommandSummary(item: JsonRecord, itemType: string, toolName: string): string | null {
+  const direct = typeof item.command === "string" && item.command.trim().length > 0 ? item.command : null;
+  if (direct) return direct;
+  if (itemType !== "mcpToolCall" && itemType !== "dynamicToolCall") return null;
+  const input = toolCallInputSummary(item);
+  return input ? `${toolName} ${input}` : toolName;
+}
+
+function toolCallInputSummary(item: JsonRecord): string | null {
+  for (const key of ["arguments", "args", "input", "params", "parameters"] as const) {
+    if (!Object.prototype.hasOwnProperty.call(item, key)) continue;
+    const value = item[key];
+    if (value === null || value === undefined) continue;
+    const text = typeof value === "string" ? value : JSON.stringify(value);
+    if (typeof text === "string" && text.trim().length > 0 && text.trim() !== "{}") return String(boundedTextSummary(text, { limitChars: 600 }).text);
+  }
+  return null;
+}
+
+function firstToolCallString(item: JsonRecord, keys: readonly string[]): string | null {
+  for (const key of keys) {
+    const value = item[key];
+    if (typeof value === "string" && value.trim().length > 0) return value;
+  }
+  return null;
+}
+
 function toolCallOutputSummary(item: JsonRecord): string | null {
   const direct = item.outputSummary ?? item.stdoutSummary ?? item.message;
   if (typeof direct === "string" && direct.trim().length > 0) return String(boundedTextSummary(direct).text);