From 1e4807e6f2198c12b2f55cdbfcedc3668225b977 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Tue, 30 Dec 2025 19:24:34 -0500
Subject: [PATCH] Avoid filter flicker during smart-feed refresh

---
 src/components/Map/usePostsEngine.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/components/Map/usePostsEngine.js b/src/components/Map/usePostsEngine.js
index 7a6cc27..9ecbe57 100644
--- a/src/components/Map/usePostsEngine.js
+++ b/src/components/Map/usePostsEngine.js
@@ -947,6 +947,7 @@ export function usePostsEngine({
 
   // On view change: re-filter markers/cards to current bounds even without fetch
   useEffect(() => {
+    if (pendingFilterRef.current) return;
     refreshVisibleAndMarkers(timeFilter);
   }, [viewParams, refreshVisibleAndMarkers, timeFilter]);
 
@@ -1129,6 +1130,9 @@ export function usePostsEngine({
       } catch (err) {
         setLoadingPosts(false);
         setLoadError("fetch failed");
+        if (pendingFilterRef.current === currentKey) {
+          pendingFilterRef.current = "";
+        }
         const key = `${filterKey}|${Math.round(lat * 100)}|${Math.round(lng * 100)}|${Math.round(radiusKm)}`;
         const now = Date.now();
         if (retryRef.current.key !== key || now - retryRef.current.ts > 5000) {