From 2f2c9f128cd825406e4d02e3578354049c092792 Mon Sep 17 00:00:00 2001
From: Pete Schwamb <pete@schwamb.net>
Date: Tue, 13 Oct 2026 11:16:43 -0500
Subject: [PATCH] Tag historical and clinical gap-fill readings as backfill

Samples forwarded from historical pages and from the clinical gap-fill stream are marked isBackfill; realtime samples are not.
---
 LibreLoop/Pairing/LibreLoopCGMManager+Pairing.swift | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/LibreLoop/Pairing/LibreLoopCGMManager+Pairing.swift b/LibreLoop/Pairing/LibreLoopCGMManager+Pairing.swift
index 0907f0a..6aa8405 100644
--- a/LibreLoop/Pairing/LibreLoopCGMManager+Pairing.swift
+++ b/LibreLoop/Pairing/LibreLoopCGMManager+Pairing.swift
@@ -703,7 +703,8 @@ extension LibreLoopCGMManager {
                 // duplicate point at the same timestamp.
                 syncIdentifier: "libreloop-\(serial)-\(sample.lifeCount)",
                 syncVersion: 1,
-                device: device
+                device: device,
+                isBackfill: true
             ))
             backfillForwardedLifeCounts.insert(sample.lifeCount)
         }
@@ -806,7 +807,8 @@ extension LibreLoopCGMManager {
             wasUserEntered: false,
             syncIdentifier: "libreloop-\(serial)-\(lifeCount)",
             syncVersion: 1,
-            device: device
+            device: device,
+            isBackfill: true
         )
         backfillForwardedLifeCounts.insert(lifeCount)
         llog("forwarded clinical \(kind) sample to Loop: \(mgdl) mg/dL lifeCount=\(lifeCount) sampleDate=\(date.timeIntervalSince1970)")