fix: remove Steward analysis from user-visible reasoning

The Steward's internal routing analysis (DELEGATE, COMPLEXITY, etc.)
was being exposed in <think> blocks. This is implementation detail,
not useful reasoning for the user.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/responses/service.py

@@ -651,16 +651,6 @@ async def create_response_with_steward(request: ResponseRequest) -> Response:
         # Build response output items
         output_items = []
 
-        # Add Steward reasoning as a reasoning output item
-        output_items.append(ReasoningOutputItem(
-            id=f"reasoning_{generate_id()}",
-            summary=[
-                "🎩 Steward's Analysis:",
-                enriched.steward_reasoning,
-            ],
-            status="completed"
-        ))
-
         # Add Tatlock's message
         output_items.append(MessageOutputItem(
             id=f"msg_{generate_id()}",

src/responses/streaming.py

@@ -166,26 +166,6 @@ class StreamingCoordinator:
                 conversation_id=conversation_id,
             )
 
-            # Stream Steward's analysis as reasoning summary
-            steward_lines = enriched.steward_reasoning.split('\n')
-            for line in steward_lines:
-                if line.strip():
-                    yield ReasoningSummaryDelta(delta=line + "\n")
-                    await asyncio.sleep(0.05)
-
-            yield ReasoningSummaryDone()
-
-            # Add Steward reasoning to output items
-            reasoning_item = ReasoningOutputItem(
-                id=f"reasoning_{generate_id()}",
-                summary=[
-                    "🎩 Steward's Analysis:",
-                    enriched.steward_reasoning,
-                ],
-                status="completed"
-            )
-            output_items.append(reasoning_item)
-
             # Initialize tool tracker
             tracker = ToolCallTracker(
                 recommended_capabilities=enriched.recommendation.recommended_capabilities,