diff --git a/install-stack.sh b/install-stack.sh
index 6e98909..be7b22e 100755
--- a/install-stack.sh
+++ b/install-stack.sh
@@ -1130,6 +1130,16 @@ ${build_out}"
     && msg_ok "Room Planner running at 10.10.10.120:3080" \
     || msg_warn "Room Planner may need extra time — check LXC 120"
 
+  # Seed app + capabilities into auth DB
+  msg_info "Seeding room-planner into auth DB"
+  pct exec 120 -- docker run --rm \
+    -e DATABASE_URL="postgresql://auth:${AUTH_DB_PASS}@10.10.10.100:5432/auth_db" \
+    -v /opt/room-planner/seed-app.js:/app/seed-app.js \
+    room-planner-backend \
+    node seed-app.js &>/dev/null \
+    && msg_ok "room-planner seeded into auth DB" \
+    || msg_warn "Seed failed — run manually: see seed-app.js"
+
   # Add /room-planner/ location to NPM proxy host
   npm_add_location "/room-planner/" "10.10.10.120" 3080
 }