feat(tests): enhance modelTesterSession tests and add proxy logs tests

- Updated modelTesterSession tests to serialize assistant history as output_text and removed mime_type from input_file.
- Introduced new tests for stats proxy logs routes, covering paginated log retrieval and detailed log views with parsed billing details.
- Added server-driven tests for ProxyLogs component to validate API interactions and UI rendering based on server data.

src/web/pages/helpers/modelTesterSession.test.ts

@@ -252,7 +252,42 @@ describe('modelTesterSession', () => {
           role: 'user',
           content: [
             { type: 'input_text', text: '请总结上传文件' },
-            { type: 'input_file', file_id: 'file_123', filename: 'notes.txt', mime_type: 'text/plain' },
+            { type: 'input_file', file_id: 'file_123', filename: 'notes.txt' },
+          ],
+        },
+      ],
+      stream: false,
+      temperature: 0.7,
+    });
+  });
+
+  it('serializes assistant history as output_text for responses payloads', () => {
+    const payload = buildApiPayload(
+      [
+        { id: 'u1', role: 'user', content: '先看附件', createAt: 1 },
+        { id: 'a1', role: 'assistant', content: '我已经看过摘要', createAt: 2 },
+      ],
+      {
+        ...DEFAULT_INPUTS,
+        model: 'gpt-5.2',
+        protocol: 'responses',
+      },
+      DEFAULT_PARAMETER_ENABLED,
+    );
+
+    expect(payload.jsonBody).toEqual({
+      model: 'gpt-5.2',
+      input: [
+        {
+          role: 'user',
+          content: [
+            { type: 'input_text', text: '先看附件' },
+          ],
+        },
+        {
+          role: 'assistant',
+          content: [
+            { type: 'output_text', text: '我已经看过摘要' },
           ],
         },
       ],
@@ -357,7 +392,6 @@ describe('modelTesterSession', () => {
               type: 'input_file',
               file_id: 'file_metapi_123',
               filename: 'paper.pdf',
-              mime_type: 'application/pdf',
             },
           ],
         },

src/web/pages/helpers/modelTesterSession.ts

@@ -343,7 +343,6 @@ const toResponsesContentPart = (part: ConversationContentPart): Record<string, u
     if (typeof part.fileId === 'string' && part.fileId.trim()) fileBlock.file_id = part.fileId.trim();
     if (typeof part.filename === 'string' && part.filename.trim()) fileBlock.filename = part.filename.trim();
     if (typeof part.data === 'string' && part.data.trim()) fileBlock.file_data = part.data.trim();
-    if (typeof part.mimeType === 'string' && part.mimeType.trim()) fileBlock.mime_type = part.mimeType.trim();
     if (Object.keys(fileBlock).length === 1) return null;
     return fileBlock;
   }
@@ -383,10 +382,12 @@ const toResponsesInput = (messages: ApiChatMessage[]) => {
   if (!hasStructuredParts && messages.length === 1 && messages[0].role === 'user') {
     return messages[0].content;
   }
+  const toResponsesTextType = (role: ApiChatMessage['role']) =>
+    role === 'assistant' ? 'output_text' : 'input_text';
   return messages.map((message) => ({
     role: message.role === 'assistant' ? 'assistant' : 'user',
     content: [
-      ...(message.content.trim() ? [{ type: 'input_text', text: message.content }] : []),
+      ...(message.content.trim() ? [{ type: toResponsesTextType(message.role), text: message.content }] : []),
       ...((Array.isArray(message.parts)
         ? message.parts
           .map((part) => toResponsesContentPart(part))
@@ -394,7 +395,7 @@ const toResponsesInput = (messages: ApiChatMessage[]) => {
         : [])),
     ].length > 0
       ? [
-        ...(message.content.trim() ? [{ type: 'input_text', text: message.content }] : []),
+        ...(message.content.trim() ? [{ type: toResponsesTextType(message.role), text: message.content }] : []),
         ...((Array.isArray(message.parts)
           ? message.parts
             .map((part) => toResponsesContentPart(part))