fix simulation reporting and research resilience

backend/app/api/gallery.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
-from fastapi import APIRouter, Request, HTTPException
+from fastapi import APIRouter, Request, HTTPException
+from app.services.narrator import REPORT_SCHEMA_VERSION
 
 router = APIRouter(prefix="/api")
 
@@ -18,8 +19,12 @@ async def get_gallery_item(sim_id: str, request: Request):
         raise HTTPException(404, "Simulation not found in gallery")
     await store.increment_view_count(sim_id)
     cached = await store.get_report(sim_id)
-    if cached and cached.get("status") == "ready":
-        return cached["report"]
+    if (
+        cached
+        and cached.get("status") == "ready"
+        and cached.get("report", {}).get("report_schema_version") == REPORT_SCHEMA_VERSION
+    ):
+        return cached["report"]
     narrator = request.app.state.narrator
     report = await narrator.generate_report(sim_id, store)
     if "error" not in report: