Fix timestamps computation error

src/mfa.py

@@ -86,9 +86,15 @@ def _mfa_wait_result(event_id, headers, base):
     sse_resp.raise_for_status()
 
     result_data = None
+    current_event = None
     for line in sse_resp.iter_lines(decode_unicode=True):
-        if line and line.startswith("data: "):
-            result_data = line[6:]  # strip "data: " prefix
+        if line and line.startswith("event: "):
+            current_event = line[7:]
+        elif line and line.startswith("data: "):
+            if current_event == "complete":
+                result_data = line[6:]
+            elif current_event == "error":
+                raise RuntimeError(f"MFA align_batch SSE error: {line[6:]}")
 
     if result_data is None:
         raise RuntimeError("No data received from MFA align_batch SSE stream")
@@ -98,8 +104,8 @@ def _mfa_wait_result(event_id, headers, base):
     if isinstance(parsed, list) and len(parsed) == 1:
         parsed = parsed[0]
 
-    if parsed.get("status") != "ok":
-        raise RuntimeError(f"MFA align_batch failed: {parsed.get('error', parsed)}")
+    if not isinstance(parsed, dict) or parsed.get("status") != "ok":
+        raise RuntimeError(f"MFA align_batch failed: {parsed}")
 
     return parsed["results"]