feat(cursor): Add cursor Provider

open-sse/translator/response/cursor-to-openai.js

@@ -0,0 +1,30 @@
+/**
+ * Cursor to OpenAI Response Translator
+ * CursorExecutor already emits OpenAI format - this is a passthrough
+ */
+import { register } from "../index.js";
+import { FORMATS } from "../formats.js";
+
+/**
+ * Convert Cursor response to OpenAI format
+ * Since CursorExecutor.transformProtobufToSSE/JSON already emits OpenAI chunks,
+ * this is a passthrough translator (similar to Kiro pattern)
+ */
+export function convertCursorToOpenAI(chunk, state) {
+  if (!chunk) return null;
+
+  // If chunk is already in OpenAI format (from executor transform), return as-is
+  if (chunk.object === "chat.completion.chunk" && chunk.choices) {
+    return chunk;
+  }
+
+  // If chunk is a completion object (non-streaming), return as-is
+  if (chunk.object === "chat.completion" && chunk.choices) {
+    return chunk;
+  }
+
+  // Fallback: return chunk as-is (should not reach here)
+  return chunk;
+}
+
+register(FORMATS.CURSOR, FORMATS.OPENAI, null, convertCursorToOpenAI);