diff --git a/internal/generate-tree.mjs b/internal/generate-tree.mjs
index fbe521730..5a7b1cdce 100644
--- a/internal/generate-tree.mjs
+++ b/internal/generate-tree.mjs
@@ -1663,6 +1663,15 @@ function main() {
         staged++
       }
     }
+    // people-groups/lists/*.json — the ?list= / profile-config `list` prop fetches the chosen list by name
+    // (frontier-500k, frontier, unreached, unengaged), so the whole folder ships. Missing, every non-default
+    // list 404'd on the built tree and drew 0 pins (go-int / rega at a71007f1).
+    const listsSrc = join(pubAssets, 'people-groups', 'lists')
+    if (existsSync(listsSrc)) {
+      const listsDest = join(treeAssets, 'people-groups', 'lists')
+      mkdirSync(listsDest, { recursive: true })
+      for (const f of readdirSync(listsSrc)) { if (!f.endsWith('.json')) continue; cpSync(join(listsSrc, f), join(listsDest, f)); staged++ }
+    }
     // previews/ + posters/ — the poster walls fetch these PER CARD, lazily, by id
     // (`${assetsBase}/previews/<id>.webp`, `${assetsBase}/posters/<id>.webp`), so the
     // name is dynamic and the whole folder ships. They are the bulk of the tree