feat(events): add SFM Event DB Manager for browsing, flagging, and deleting events

backend/routers/admin_modules.py

@@ -49,6 +49,15 @@ def admin_sfm_page(request: Request):
     })
 
 
+@router.get("/admin/events", response_class=HTMLResponse)
+def admin_events_page(request: Request):
+    """SFM Event DB Manager — browse, flag, and delete events across all units."""
+    return templates.TemplateResponse("admin_events.html", {
+        "request": request,
+        "sfm_base_url": SFM_BASE_URL,
+    })
+
+
 @router.get("/api/admin/sfm/overview")
 async def admin_sfm_overview() -> JSONResponse:
     """Aggregated SFM diagnostic snapshot.