feat: add wallet-autoconnect module for Sparrow and Bisq 1

Agent-Logs-Url: https://github.com/naturallaw777/staging_alpha/sessions/29aa6dce-667a-49a6-9740-68d501fed22c

Co-authored-by: naturallaw777 <99053422+naturallaw777@users.noreply.github.com>

modules/wallet-autoconnect.nix

@@ -0,0 +1,83 @@
+{ config, pkgs, lib, ... }:
+
+lib.mkIf config.sovran_systemsOS.services.bitcoin {
+
+  # ── Sparrow Wallet Auto-Connect ─────────────────────────────
+  systemd.services.sparrow-autoconnect = {
+    description = "Auto-configure Sparrow Wallet to use local Electrs node";
+    after = [ "electrs.service" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+    };
+    path = [ pkgs.coreutils pkgs.iproute2 ];
+    script = ''
+      CONFIG_FILE="/home/free/.sparrow/config"
+
+      if [ -f "$CONFIG_FILE" ]; then
+        echo "Sparrow config already exists, skipping"
+        exit 0
+      fi
+
+      # Wait for Electrs to be ready (up to 30 attempts)
+      ATTEMPTS=0
+      until ss -ltn 2>/dev/null | grep -q ':50001' || [ "$ATTEMPTS" -ge 30 ]; do
+        ATTEMPTS=$((ATTEMPTS + 1))
+        sleep 2
+      done
+
+      mkdir -p /home/free/.sparrow
+
+      cat > "$CONFIG_FILE" << 'EOF'
+{
+  "serverType": "ELECTRUM_SERVER",
+  "electrumServer": "tcp://127.0.0.1:50001",
+  "useProxy": false
+}
+EOF
+
+      chown -R free:users /home/free/.sparrow
+      echo "Sparrow auto-configured to use local Electrs node"
+    '';
+  };
+
+  # ── Bisq 1 Auto-Connect ─────────────────────────────────────
+  systemd.services.bisq-autoconnect = {
+    description = "Auto-configure Bisq to use local Bitcoin node";
+    after = [ "bitcoind.service" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+    };
+    path = [ pkgs.coreutils pkgs.iproute2 ];
+    script = ''
+      BISQ_CONF="/home/free/.local/share/Bisq/bisq.properties"
+
+      if [ -f "$BISQ_CONF" ]; then
+        echo "Bisq config already exists, skipping"
+        exit 0
+      fi
+
+      # Wait for bitcoind RPC to be ready (up to 30 attempts)
+      ATTEMPTS=0
+      until ss -ltn 2>/dev/null | grep -q ':8333' || [ "$ATTEMPTS" -ge 30 ]; do
+        ATTEMPTS=$((ATTEMPTS + 1))
+        sleep 2
+      done
+
+      mkdir -p /home/free/.local/share/Bisq
+
+      cat > "$BISQ_CONF" << 'EOF'
+btcNodes=127.0.0.1:8333
+useTorForBtc=true
+useCustomBtcNodes=true
+EOF
+
+      chown -R free:users /home/free/.local/share/Bisq
+      echo "Bisq auto-configured to use local Bitcoin node"
+    '';
+  };
+
+}