add more logging for malformed tool calls

Author: charleslien

backend/src/tools/definitions/tool/code-search.ts

@@ -65,6 +65,7 @@ Note: Do not use the end_turn tool after this tool! You will want to see the out
 
 Examples:
 ${getToolCallString(toolName, { pattern: 'foo' }, endsAgentStep)}
+${getToolCallString(toolName, { pattern: 'foo\\.bar = 1\\.0' }, endsAgentStep)}
 ${getToolCallString(toolName, { pattern: 'import.*foo', cwd: 'src' }, endsAgentStep)}
 ${getToolCallString(toolName, { pattern: 'function.*authenticate', flags: '-i -t ts' }, endsAgentStep)}
 ${getToolCallString(toolName, { pattern: 'TODO', flags: '-n --type-not test' }, endsAgentStep)}

backend/src/xml-stream-parser.ts

@@ -70,9 +70,14 @@ export async function* processStreamWithTags(
         AnalyticsEvent.MALFORMED_TOOL_CALL_JSON,
         loggerOptions?.userId ?? '',
         {
-          contents,
+          contents: JSON.stringify(contents),
           model: loggerOptions?.model,
           agent: loggerOptions?.agentName,
+          error: {
+            name: error.name,
+            message: error.message,
+            stack: error.stack,
+          },
           autocompleted,
         }
       )