Display cooldown in minutes instead of milliseconds

- Add cooldownMinutes field to /nwc/status and /nwc/auto-refill responses
- Change auto-refill log from ms to minutes display
- Keep cooldownMs internally for calculations

src/daemon/http/index.ts

@@ -446,6 +446,7 @@ export function createDaemonRequestHandler(deps: {
                   threshold: autoRefill.threshold,
                   amount: autoRefill.amount,
                   cooldownMs: autoRefill.cooldownMs,
+                  cooldownMinutes: autoRefill.cooldownMs / 60000,
                 }
               : undefined,
           },
@@ -565,7 +566,10 @@ export function createDaemonRequestHandler(deps: {
         return {
           output: {
             message: `Auto-refill ${enabled ? "enabled" : "disabled"}.`,
-            autoRefill: config.nwc.autoRefill,
+            autoRefill: {
+              ...config.nwc.autoRefill,
+              cooldownMinutes: config.nwc.autoRefill.cooldownMs / 60000,
+            },
           },
         };
       });

src/daemon/wallet/index.ts

@@ -319,7 +319,7 @@ export async function createWalletAdapter(
     const getConfig = options.getAutoRefillConfig ?? (() => options.autoRefill);
     stopAutoRefill = startAutoRefillLoop(client, getWallet, getConfig);
     logger.log(
-      `[wallet] Auto-refill enabled: threshold=${autoRefillConfig.threshold} sats, amount=${autoRefillConfig.amount} sats, cooldown=${autoRefillConfig.cooldownMs}ms`,
+      `[wallet] Auto-refill enabled: threshold=${autoRefillConfig.threshold} sats, amount=${autoRefillConfig.amount} sats, cooldown=${autoRefillConfig.cooldownMs / 60000} minutes`,
     );
   } else if (wallet && options.getAutoRefillConfig) {
     // Wallet exists but auto-refill is not currently enabled.