streamline dev setup and docker images

- Rewrite setup.sh: auto-installs Docker, downloads regtest snapshot,
  pulls images, starts all services. Idempotent, works on fresh Ubuntu/macOS.
- Create coinos-base image (196MB) shared by all containers: bitcoin,
  elements, lightning, strfry, kvrocks, electrs, tigerbeetle, chopsticks.
  Total pull ~490MB, down from ~4.3GB.
- Move all images to ghcr.io/coinos/* namespace.
- Drop nutshell (mint/wallet), postgres, mon from default dev compose.
- Comment out ark stack (optional), guard ark.ts against empty config.
- Add missing sampledata: lightningc, strfry, kvrocks, valkey configs.
- Strip strfry binary (145MB debug symbols removed).
- Use single CLN version (v25.12.1) for all 3 lightning nodes.
- Switch valkey to alpine variant (110MB → 41MB).
- Update config.ts.sample with correct service URLs.
- Regtest snapshot hosted on GitHub Releases (~2MB).

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/ark.ts b/lib/ark.ts
index f4f6d70d..03f02412 100644
--- a/lib/ark.ts
+++ b/lib/ark.ts
@@ -185,8 +185,10 @@ export const refreshArkWallet = async (force = false) => {
 };
 
 // Initial check after 60s startup delay; retry every 60s to catch ark rounds
-setTimeout(refreshArkWallet, 60_000);
-setInterval(() => refreshArkWallet(), 60_000);
+if (config.ark?.arkPrivateKey) {
+  setTimeout(refreshArkWallet, 60_000);
+  setInterval(() => refreshArkWallet(), 60_000);
+}
 
 
 export const sendArk = async (address: string, amount: number) => {