From e15c78e9506c75cd6e5e155e505da4867a8cf05c Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 26 Dec 2025 01:10:59 -0500
Subject: [PATCH] Backfill smart feed with posts when sparse

---
 src/components/Map/usePostsEngine.js | 31 ++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/src/components/Map/usePostsEngine.js b/src/components/Map/usePostsEngine.js
index 596945a..52342a5 100644
--- a/src/components/Map/usePostsEngine.js
+++ b/src/components/Map/usePostsEngine.js
@@ -663,8 +663,10 @@ export function usePostsEngine({
           username: username || undefined,
         });
         const timeParam = timeFilter && timeFilter !== "PAST" ? timeFilter : undefined;
-        if (!hasPostsInRadius(newPosts, lat, lng, radiusKm)) {
-          newPosts = await fetchPosts({
+        const smartCount = Array.isArray(newPosts) ? newPosts.length : 0;
+        const needFallback = smartCount < 12 || !hasPostsInRadius(newPosts, lat, lng, radiusKm);
+        if (needFallback) {
+          const fallbackPosts = await fetchPosts({
             category: catCode || undefined,
             subCategory: subCatParam || undefined,
             time: timeParam,
@@ -673,8 +675,8 @@ export function usePostsEngine({
             radiusKm,
             limit: 120,
           });
-          if ((!Array.isArray(newPosts) || newPosts.length === 0) && timeFilter !== "PAST") {
-            newPosts = await fetchPosts({
+          if ((!Array.isArray(fallbackPosts) || fallbackPosts.length === 0) && timeFilter !== "PAST") {
+            const widenedPosts = await fetchPosts({
               category: catCode || undefined,
               subCategory: subCatParam || undefined,
               time: "PAST",
@@ -683,6 +685,27 @@ export function usePostsEngine({
               radiusKm,
               limit: 120,
             });
+            const merged = new Map();
+            for (const p of (newPosts || [])) {
+              const key = getPostKey(p);
+              if (key) merged.set(key, p);
+            }
+            for (const p of (widenedPosts || [])) {
+              const key = getPostKey(p);
+              if (key && !merged.has(key)) merged.set(key, p);
+            }
+            newPosts = Array.from(merged.values());
+          } else {
+            const merged = new Map();
+            for (const p of (newPosts || [])) {
+              const key = getPostKey(p);
+              if (key) merged.set(key, p);
+            }
+            for (const p of (fallbackPosts || [])) {
+              const key = getPostKey(p);
+              if (key && !merged.has(key)) merged.set(key, p);
+            }
+            newPosts = Array.from(merged.values());
           }
         }