Update Convex with no payload to be just like convex with payload but without payload

scripts/db/down

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd -- "$SCRIPT_DIR/../.." && pwd)"
+COMPOSE_FILE="$ROOT_DIR/docker/compose.local.yml"
+STATE_FILE="$ROOT_DIR/.local/dev.generated.env"
+WIPE=false
+[ "${1:-}" = "--wipe" ] && WIPE=true
+
+if command -v docker >/dev/null 2>&1; then RUNTIME=docker
+elif command -v podman >/dev/null 2>&1; then RUNTIME=podman
+else echo "Docker or Podman not found; nothing to stop." >&2; exit 0; fi
+
+ENV_FILE="$(mktemp "${TMPDIR:-/tmp}/convex-monorepo-local.XXXXXX.env")"
+trap 'rm -f "$ENV_FILE"' EXIT
+sh "$ROOT_DIR/scripts/export-env" dev > "$ENV_FILE"
+
+if [ "$WIPE" = true ]; then
+  "$RUNTIME" compose --env-file "$ENV_FILE" -f "$COMPOSE_FILE" down -v
+  if [ -f "$STATE_FILE" ]; then
+    tmp="${STATE_FILE}.tmp"
+    grep -v '^CONVEX_SELF_HOSTED_ADMIN_KEY=' "$STATE_FILE" > "$tmp" || true
+    mv "$tmp" "$STATE_FILE"
+  fi
+  echo "Local stack and Convex data volume removed; generated admin key cleared."
+else
+  "$RUNTIME" compose --env-file "$ENV_FILE" -f "$COMPOSE_FILE" down
+  echo "Local stack stopped; Convex data preserved."
+fi