feat(docker): add dev.sh with auto-funding and ATM app setup

- Add dev.sh script for managing regtest development environment
- Implement cmd_fund to fund ATM app owner via Lightning.Pub API
- Add --fund flag to cmd_up for automatic funding on startup
- Update setup_atm_app to write VITE_APP_ID to machine .env
- Fix Electron IPC to pass appId and extensionApiUrl to renderer
- Restructure repo from nested lamassu-next/ to root

The dev.sh script now supports:
- ./dev.sh up --fund  # Start regtest and auto-fund ATM
- ./dev.sh fund       # Fund existing ATM app
- ./dev.sh status     # Show environment status
- ./dev.sh reset      # Clean restart

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker/docker-compose.regtest.yml

@@ -0,0 +1,148 @@
+# Lamassu Next - Regtest Integration
+#
+# This overlay connects lamassu-next services to the comprehensive regtest
+# environment at ~/dev/local/docker/regtest
+#
+# Usage:
+#   1. Start the regtest environment:
+#      cd ~/dev/local/docker/regtest && ./start-regtest
+#
+#   2. Start lamassu services:
+#      cd lamassu-next/docker && docker compose -f docker-compose.regtest.yml up -d
+#
+#   3. Configure apps/machine/.env:
+#      VITE_RELAY_URL=ws://localhost:7777
+#      VITE_EXTENSION_API_URL=http://localhost:1777
+#
+# Services:
+#   - strfry: Private Nostr relay (port 7777)
+#   - lightning-pub: Nostr-native Lightning account system (port 1776)
+#     - Uses lnd-4 from regtest as backend
+#     - Withdraw extension on port 1777
+#   - miner: Auto-mines blocks to keep Lightning channels active
+#
+
+services:
+  # Private Nostr relay for ATM communication
+  strfry:
+    image: ghcr.io/hoytech/strfry:latest
+    container_name: lamassu-relay
+    ports:
+      - '7777:7777'
+    volumes:
+      - ./strfry.conf:/etc/strfry.conf:ro
+      - strfry-data:/app/strfry-db
+    ulimits:
+      nofile:
+        soft: 524288
+        hard: 524288
+    healthcheck:
+      test: ['CMD', 'nc', '-z', 'localhost', '7777']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+    networks:
+      - regtest
+
+  # Lightning.Pub - Nostr-native Lightning account system
+  # Connects to lnd-4 from the regtest environment
+  # Use LIGHTNING_PUB_IMAGE env var to specify image (default: lightning-pub-withdraw)
+  lightning-pub:
+    image: ${LIGHTNING_PUB_IMAGE:-lightning-pub-withdraw:latest}
+    container_name: lamassu-lightning-pub
+    extra_hosts:
+      - 'host.docker.internal:host-gateway'
+    ports:
+      - '1776:1776'
+      - '1777:1777'  # Withdraw extension HTTP API
+    volumes:
+      - lightning-pub-data:/root/lightning_pub
+      # Override Dockerfile's anonymous /app/data volume with named volume
+      - lightning-pub-appdata:/app/data
+      # Mount lnd-4 data from regtest for macaroons/certs
+      - ${REGTEST_DATA_DIR:-/home/padreug/dev/local/docker/regtest/data}/lnd-4:/root/.lnd:ro
+    environment:
+      - NETWORK=regtest
+      # lnd-4 is accessible via Docker network
+      - LND_ADDRESS=lnd-4:10009
+      - LND_CERT_PATH=/root/.lnd/tls.cert
+      - LND_MACAROON_PATH=/root/.lnd/data/chain/bitcoin/regtest/admin.macaroon
+      # Use strfry from this compose
+      - NOSTR_RELAYS=ws://strfry:7777
+      # Disable external liquidity provider for regtest
+      - DISABLE_LIQUIDITY_PROVIDER=true
+      # Admin token for HTTP API access (development only)
+      - ADMIN_TOKEN=lamassu-dev-admin-token
+      # Extension HTTP API URL (for LNURL callbacks from external wallets)
+      # Use HOST_IP env var for your machine's LAN IP (required for phone wallets)
+      - EXTENSION_SERVICE_URL=http://${HOST_IP:-192.168.1.190}:1777
+    restart: unless-stopped
+    networks:
+      - regtest
+
+  # Auto-miner for regtest (mines 1 block every MINE_INTERVAL seconds)
+  # Keeps Lightning channels active during development
+  miner:
+    image: boltz/bitcoin-core:25.0
+    container_name: lamassu-miner
+    entrypoint: /bin/sh
+    command:
+      - -c
+      - |
+        echo "Auto-miner started (interval: $${MINE_INTERVAL}s)"
+        # Wait for bitcoind to be ready
+        while ! bitcoin-cli -regtest -rpcconnect=bitcoind getblockchaininfo > /dev/null 2>&1; do
+          echo "Waiting for bitcoind..."
+          sleep 5
+        done
+        echo "bitcoind ready, starting mining loop"
+        while true; do
+          bitcoin-cli -regtest -rpcconnect=bitcoind -generate 1 > /dev/null 2>&1 && echo "Mined block $(bitcoin-cli -regtest -rpcconnect=bitcoind getblockcount)"
+          sleep $${MINE_INTERVAL}
+        done
+    environment:
+      - MINE_INTERVAL=${MINE_INTERVAL:-120}
+    volumes:
+      - bitcoin-data:/root/.bitcoin
+    restart: unless-stopped
+    networks:
+      - regtest
+
+  # PostgreSQL for optional server-side state
+  postgres:
+    image: postgres:16-alpine
+    container_name: lamassu-postgres
+    ports:
+      - '5432:5432'
+    environment:
+      POSTGRES_DB: lamassu_dev
+      POSTGRES_USER: lamassu
+      POSTGRES_PASSWORD: lamassu_dev_password
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U lamassu -d lamassu_dev']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+    networks:
+      - regtest
+
+volumes:
+  strfry-data:
+  lightning-pub-data:
+  lightning-pub-appdata:
+  postgres-data:
+  # Mount the bitcoin-data volume from the regtest environment
+  bitcoin-data:
+    external: true
+    name: lnbits_bitcoin-data
+
+networks:
+  regtest:
+    # The regtest environment uses 'lnbits_default' as its Docker network
+    # (named after the original LNbits regtest project)
+    name: lnbits_default
+    external: true