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>

.claude/skills/test.md

@@ -0,0 +1,201 @@
+# /test - Testing Agent
+
+## Purpose
+Run tests, analyze coverage, generate test cases, and validate ATM transaction flows.
+
+## Invocation
+```
+/test [command] [target]
+```
+
+Commands:
+- `run` - Run tests (default)
+- `coverage` - Run with coverage report
+- `generate` - Generate test cases for a file
+- `flow` - Validate transaction flow
+- `hardware` - Run hardware mock tests
+
+## Test Categories
+
+### 1. Unit Tests
+Location: `*.test.ts` or `*.spec.ts` alongside source files
+
+```bash
+pnpm test                    # All tests
+pnpm test --filter @lamassu/nostr-client  # Specific package
+```
+
+### 2. Integration Tests
+Location: `tests/integration/`
+
+Tests cross-package interactions:
+- Nostr client + CLINK
+- State machine + Hardware mocks
+- Lightning client + Invoice handling
+
+### 3. E2E Tests (Playwright)
+Location: `tests/e2e/`
+
+Full transaction flows:
+- Cash-in flow (bill insert → Lightning payment)
+- Cash-out flow (Lightning receive → dispense)
+- Error recovery flows
+
+### 4. Hardware Mock Tests
+Test against mock hardware:
+
+```bash
+pnpm test:hardware           # With mock validator/dispenser
+REAL_HARDWARE=true pnpm test:hardware  # With real hardware (CI skip)
+```
+
+## Test Generation
+
+### For a new file:
+```
+/test generate packages/lightning/src/client.ts
+```
+
+Generates test skeleton:
+```typescript
+import { describe, it, expect, vi } from 'vitest'
+import { LightningPubClient } from './client'
+
+describe('LightningPubClient', () => {
+  describe('createInvoice', () => {
+    it('should create valid BOLT11 invoice', async () => {
+      // TODO: Implement
+    })
+
+    it('should handle network errors', async () => {
+      // TODO: Implement
+    })
+
+    it('should validate amount bounds', async () => {
+      // TODO: Implement
+    })
+  })
+})
+```
+
+### Test Case Suggestions
+Based on code analysis, suggest test cases for:
+- Happy path
+- Edge cases (null, empty, max values)
+- Error conditions
+- Timeout scenarios
+- Concurrent operations
+
+## Transaction Flow Validation
+
+### Cash-In Flow
+```
+/test flow cash-in
+```
+
+Validates:
+1. Idle → Select Cash-In
+2. Bill insertion events received
+3. Amount calculation correct
+4. CLINK offer generated
+5. Payment received event
+6. Receipt sent (optional)
+7. Return to Idle
+
+### Cash-Out Flow
+```
+/test flow cash-out
+```
+
+Validates:
+1. Idle → Select Cash-Out
+2. Amount selection
+3. Invoice generated
+4. Payment received
+5. Cash dispensed
+6. Bills removed detection (F56)
+7. Return to Idle
+
+### Error Flows
+```
+/test flow errors
+```
+
+Validates:
+- Hardware timeout recovery
+- Payment failure handling
+- Network disconnection
+- Partial dispense handling
+
+## Coverage Requirements
+
+### Minimum Coverage Targets
+| Package | Statements | Branches | Functions |
+|---------|------------|----------|-----------|
+| nostr-client | 80% | 75% | 80% |
+| clink | 80% | 75% | 80% |
+| state-machine | 90% | 85% | 90% |
+| lightning | 80% | 75% | 80% |
+| hal (mocks) | 70% | 65% | 70% |
+
+### Critical Paths (100% coverage required)
+- Payment processing
+- Cash dispensing logic
+- Key handling
+- Amount calculations
+
+## Output Format
+
+### Test Run
+```markdown
+## Test Results: [target]
+
+### Summary
+- Total: 42
+- Passed: 40
+- Failed: 2
+- Skipped: 0
+
+### Failed Tests
+1. `client.test.ts` > createInvoice > should validate amount
+   - Expected: Error thrown
+   - Received: Invoice created with negative amount
+
+### Coverage
+| File | Statements | Branches | Functions |
+|------|------------|----------|-----------|
+| client.ts | 85% | 78% | 90% |
+```
+
+### Test Generation
+```markdown
+## Generated Tests: [file]
+
+### Test File
+`packages/lightning/src/client.test.ts`
+
+### Suggested Test Cases
+1. **createInvoice**
+   - ✅ Valid amount creates invoice
+   - ✅ Zero amount rejected
+   - ✅ Negative amount rejected
+   - ✅ Network error handled
+
+### Missing Coverage
+- `payInvoice` has no tests
+- Error handling branch at line 45 untested
+```
+
+## Example Usage
+
+```
+/test coverage packages/state-machine/
+```
+
+```
+/test generate packages/clink/src/offer.ts
+```
+
+```
+/test flow cash-out
+```