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>

package.json

@@ -0,0 +1,26 @@
+{
+  "name": "lamassu-next",
+  "version": "0.1.0",
+  "private": true,
+  "description": "Nostr-native Lightning ATM - KYC-free, open-source",
+  "type": "module",
+  "scripts": {
+    "dev": "turbo dev",
+    "build": "turbo build",
+    "test": "turbo test",
+    "lint": "turbo lint",
+    "format": "prettier --write .",
+    "format:check": "prettier --check .",
+    "typecheck": "turbo typecheck"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "prettier": "^3.4.0",
+    "turbo": "^2.3.0",
+    "typescript": "^5.7.0"
+  },
+  "packageManager": "pnpm@9.15.0",
+  "engines": {
+    "node": ">=22.0.0"
+  }
+}