feat: persist single evaluation history

backend/api/server.py

@@ -1554,6 +1554,27 @@ def create_app(state: AgentState) -> FastAPI:
         except EvaluationError as exc:
             raise HTTPException(status_code=400, detail=str(exc)) from exc
 
+    @app.get('/api/evaluations/analyses')
+    async def list_evaluation_analyses(
+        account_id: str,
+    ) -> list[dict[str, Any]]:
+        return state.evaluation_runtime.list_single_analyses(
+            _safe_account_id(account_id)
+        )
+
+    @app.get('/api/evaluations/analyses/{analysis_id}')
+    async def get_evaluation_analysis(
+        analysis_id: str,
+        account_id: str,
+    ) -> dict[str, Any]:
+        try:
+            return state.evaluation_runtime.get_single_analysis(
+                analysis_id,
+                _safe_account_id(account_id),
+            )
+        except EvaluationError as exc:
+            raise HTTPException(status_code=404, detail=str(exc)) from exc
+
     @app.get('/api/evaluations/datasets')
     async def list_evaluation_datasets(account_id: str) -> list[dict[str, Any]]:
         return state.evaluation_runtime.list_datasets(_safe_account_id(account_id))