feat(ui): add views for Responses (#2293)

# What does this PR do?
* Add responses list and detail views
* Refactored components to be shared as much as possible between chat
completions and responses

## Test Plan
<img width="2014" alt="image"
src="https://github.com/user-attachments/assets/6dee12ea-8876-4351-a6eb-2338058466ef"
/>
<img width="2021" alt="image"
src="https://github.com/user-attachments/assets/6c7c71b8-25b7-4199-9c57-6960be5580c8"
/>

added tests

llama_stack/ui/components/responses/responses-table.tsx

@@ -0,0 +1,117 @@
+"use client";
+
+import {
+  OpenAIResponse,
+  ResponseInput,
+  ResponseInputMessageContent,
+} from "@/lib/types";
+import { LogsTable, LogTableRow } from "@/components/logs/logs-table";
+import {
+  isMessageInput,
+  isMessageItem,
+  isFunctionCallItem,
+  isWebSearchCallItem,
+  MessageItem,
+  FunctionCallItem,
+  WebSearchCallItem,
+} from "./utils/item-types";
+
+interface ResponsesTableProps {
+  data: OpenAIResponse[];
+  isLoading: boolean;
+  error: Error | null;
+}
+
+function getInputText(response: OpenAIResponse): string {
+  const firstInput = response.input.find(isMessageInput);
+  if (firstInput) {
+    return extractContentFromItem(firstInput);
+  }
+  return "";
+}
+
+function getOutputText(response: OpenAIResponse): string {
+  const firstMessage = response.output.find((item) =>
+    isMessageItem(item as any),
+  );
+  if (firstMessage) {
+    const content = extractContentFromItem(firstMessage as MessageItem);
+    if (content) {
+      return content;
+    }
+  }
+
+  const functionCall = response.output.find((item) =>
+    isFunctionCallItem(item as any),
+  );
+  if (functionCall) {
+    return formatFunctionCall(functionCall as FunctionCallItem);
+  }
+
+  const webSearchCall = response.output.find((item) =>
+    isWebSearchCallItem(item as any),
+  );
+  if (webSearchCall) {
+    return formatWebSearchCall(webSearchCall as WebSearchCallItem);
+  }
+
+  return JSON.stringify(response.output);
+}
+
+function extractContentFromItem(item: {
+  content?: string | ResponseInputMessageContent[];
+}): string {
+  if (!item.content) {
+    return "";
+  }
+
+  if (typeof item.content === "string") {
+    return item.content;
+  } else if (Array.isArray(item.content)) {
+    const textContent = item.content.find(
+      (c: ResponseInputMessageContent) =>
+        c.type === "input_text" || c.type === "output_text",
+    );
+    return textContent?.text || "";
+  }
+  return "";
+}
+
+function formatFunctionCall(functionCall: FunctionCallItem): string {
+  const args = functionCall.arguments || "{}";
+  const name = functionCall.name || "unknown";
+  return `${name}(${args})`;
+}
+
+function formatWebSearchCall(webSearchCall: WebSearchCallItem): string {
+  return `web_search_call(status: ${webSearchCall.status})`;
+}
+
+function formatResponseToRow(response: OpenAIResponse): LogTableRow {
+  return {
+    id: response.id,
+    input: getInputText(response),
+    output: getOutputText(response),
+    model: response.model,
+    createdTime: new Date(response.created_at * 1000).toLocaleString(),
+    detailPath: `/logs/responses/${response.id}`,
+  };
+}
+
+export function ResponsesTable({
+  data,
+  isLoading,
+  error,
+}: ResponsesTableProps) {
+  const formattedData = data.map(formatResponseToRow);
+
+  return (
+    <LogsTable
+      data={formattedData}
+      isLoading={isLoading}
+      error={error}
+      caption="A list of your recent responses."
+      emptyMessage="No responses found."
+    />
+  );
+}