release: 1.6.4 (crew chat sends with Amber no longer fail)

Fix: sending to a crew sequential-ised its per-recipient signer intents, so Amber
approvals land instead of timing out. Bump 1.6.3 -> 1.6.4, APK built + published
to Zapstore (verified on relay.zapstore.dev).

AGENTS.md

@@ -2143,7 +2143,7 @@ Rules:
     `SIGN_WITH="$(sed -n 's/^SIGN_WITH=//p' ~/.config/skatespots/zsp.env)"; export SIGN_WITH`.
     Complete non-interactive publish:
     `SIGN_WITH="$(sed -n 's/^SIGN_WITH=//p' ~/.config/skatespots/zsp.env)"; export SIGN_WITH; zsp publish --quiet zapstore.yaml`
-    ✅ **Published 1.6.1, 1.6.2 and 1.6.3 on 2026-10-12** — the app's usual path is an **inline
+    ✅ **Published 1.6.1–1.6.4 on 2026-10-12/13** — the app's usual path is an **inline
     `SIGN_WITH=<nsec1…>`** (the value lives only in the shell/history, never in
     the repo); verify the signer is the app identity first (`nak key public` →
     `npub1yrnuj…` / hex `20e7c953…`). Use **`~/go/bin/zsp`** (v0.4.11) — the

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "skate-spots",
-  "version": "1.6.3",
+  "version": "1.6.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "skate-spots",
-      "version": "1.6.3",
+      "version": "1.6.4",
       "license": "AGPL-3.0-only",
       "dependencies": {
         "@bitcoinerlab/secp256k1": "^1.2.0",

package.json

@@ -1,7 +1,7 @@
 {
   "name": "skate-spots",
   "private": true,
-  "version": "1.6.3",
+  "version": "1.6.4",
   "license": "AGPL-3.0-only",
   "type": "module",
   "homepage": "https://skate-spots.org",

release-notes.txt

@@ -1,3 +1,11 @@
+🩹 Crew chat sends with Amber
+- Sending to a crew no longer fails with "Amber didn't respond". The approvals
+  now come one at a time instead of all at once, so each one lands. (A 2-person
+  crew still needs a few approvals — that's the encrypted-message cost.) For
+  fewer taps, the crew's Private chat needs about one approval per message.
+
+---
+
 🧹 Fewer signer pop-ups
 - Navigating around no longer re-decrypts your messages over and over, so the
   Amber app stops flashing as you move between screens. New messages are pulled