Fix debate elimination display and preserve original debater role numbers

- Add elimination cards (orange themed) in Timeline showing who was convinced and by whom
- Add "N eliminated" badge in round headers
- Preserve original debater numbers after elimination by passing original_indices through debate_round()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/backend/app/services/debate.py b/backend/app/services/debate.py
index 7ae25f3..086dde1 100644
--- a/backend/app/services/debate.py
+++ b/backend/app/services/debate.py
@@ -176,6 +176,8 @@ async def debate_round(
     tools_per_model: Optional[List[Optional[List[Dict[str, Any]]]]] = None,
     openrouter_api_key: Optional[str] = None,
     images: Optional[List[Dict[str, Any]]] = None,
+    original_indices: Optional[List[int]] = None,
+    original_total: Optional[int] = None,
 ) -> AsyncGenerator[Dict[str, Any], None]:
     """
     Query debate models for one round.
@@ -188,10 +190,12 @@ async def debate_round(
         idx: int, config: LLMConfig,
         current_round_so_far: Optional[List[Dict[str, Any]]] = None,
     ) -> Dict[str, Any]:
+        mi = original_indices[idx] if original_indices else idx
+        tm = original_total if original_total else len(configs)
         prompt = build_debate_prompt(
             user_prompt, debate_history, config.model_name,
             round_num, debate_format, custom_prompt,
-            model_index=idx, total_models=len(configs),
+            model_index=mi, total_models=tm,
             current_round_so_far=current_round_so_far,
         )
         atts = attachments_per_model[idx] if attachments_per_model else None
@@ -439,6 +443,8 @@ async def debate_event_stream(
             tools_per_model=active_tools,
             openrouter_api_key=openrouter_api_key,
             images=images,
+            original_indices=active_indices,
+            original_total=len(member_configs),
         ):
             round_responses.append(result)
             yield _sse_event({