Simplify template candidate confirmation and direct batch backtesting

backend/app/research/routes.py

@@ -2,6 +2,7 @@
 
 from fastapi import APIRouter, Depends, HTTPException, Query, Request
 
+from ..backtests.contracts import RunOutput
 from ..security import require_auth
 from .assets import Assets
 from .comparisons import compare
@@ -22,6 +23,7 @@ from .workspace_contracts import (
     ImportCommit,
     ImportPreview,
     SettingVariants,
+    TemplateBacktest,
     WorkflowSpec,
 )
 
@@ -149,6 +151,14 @@ async def preview(experiment_id: str, body: ExperimentPreview, request: Request)
         return await Experiments(db).preview(experiment_id, body.candidate_ids)
 
 
+@router.post("/experiments/{experiment_id}/backtest", status_code=202, response_model=RunOutput)
+async def template_backtest(experiment_id: str, body: TemplateBacktest, request: Request):
+    async with request.app.state.sessions.begin() as db:
+        result = await Experiments(db).start_template_backtest(experiment_id, body)
+    request.app.state.runner.backtests.wake.set()
+    return result
+
+
 @router.post("/variants/settings", status_code=201)
 async def settings_variants(body: SettingVariants, request: Request):
     async with request.app.state.sessions.begin() as db: