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/nostr-check.md

@@ -0,0 +1,125 @@
+# /nostr-check - Nostr Conformity Agent
+
+## Purpose
+Validate Nostr Implementation Proposals (NIP) conformity and optimize Nostr-related code.
+
+## Invocation
+```
+/nostr-check [target] [--nips NIP1,NIP2,...]
+```
+
+Where `target` can be:
+- A file path
+- A directory
+- `--events` to validate event structures
+- `--relay` to check relay configuration
+
+## Relevant NIPs for Lamassu ATM
+
+### Core NIPs (Must Implement)
+| NIP | Description | Usage in Lamassu |
+|-----|-------------|------------------|
+| NIP-01 | Basic protocol | Event structure, relay communication |
+| NIP-19 | bech32 entities | npub, nsec, nprofile encoding |
+| NIP-42 | Auth | Private relay authentication |
+| NIP-44 | Encrypted payloads | Secure DMs, receipts |
+| NIP-59 | Gift wrapping | Anonymous message delivery |
+
+### Application NIPs
+| NIP | Description | Usage in Lamassu |
+|-----|-------------|------------------|
+| NIP-17 | Private DMs | Receipt delivery |
+| NIP-47 | Nostr Wallet Connect | Potential wallet integration |
+| NIP-57 | Lightning Zaps | Optional tipping |
+
+### Custom Event Kinds
+| Kind | Description | Structure |
+|------|-------------|-----------|
+| 21001 | CLINK Offer | `{ pubkey, relays, priceType, amount? }` |
+| 21002 | CLINK Debit | Payment request/response |
+| 21003 | CLINK Manage | Operator commands |
+| 30078 | Machine Status | Replaceable, `d` tag = "status" |
+| 30079 | Transaction Record | Replaceable, `d` tag = "tx:{txid}" |
+
+## Validation Checks
+
+### Event Structure (NIP-01)
+```typescript
+interface Event {
+  id: string        // 32-byte hex
+  pubkey: string    // 32-byte hex
+  created_at: number // Unix timestamp
+  kind: number      // Event kind
+  tags: string[][]  // Array of tag arrays
+  content: string   // Arbitrary string
+  sig: string       // 64-byte hex signature
+}
+```
+
+- [ ] `id` is valid SHA256 of serialized event
+- [ ] `pubkey` is valid 32-byte hex
+- [ ] `created_at` is reasonable (not far future/past)
+- [ ] `kind` is valid for application
+- [ ] `tags` are properly formatted
+- [ ] `sig` is valid Schnorr signature
+
+### bech32 Encoding (NIP-19)
+- [ ] npub/nsec properly encoded
+- [ ] nprofile includes relay hints
+- [ ] nevent includes author pubkey
+- [ ] No confusion between hex and bech32
+
+### Encryption (NIP-44)
+- [ ] Using NIP-44 (not deprecated NIP-04)
+- [ ] Proper key derivation
+- [ ] Random nonce for each message
+- [ ] MAC verification before decryption
+
+### Auth (NIP-42)
+- [ ] Challenge-response implemented
+- [ ] Auth events have proper `relay` tag
+- [ ] Auth events signed correctly
+- [ ] Timeout handling for auth flow
+
+## Optimization Suggestions
+
+### Relay Communication
+- Use connection pooling
+- Implement proper reconnection with backoff
+- Batch event publishing when possible
+- Use REQ filters efficiently
+
+### Event Handling
+- Verify signatures before processing
+- Cache verified events
+- Use proper indexing for event lookups
+- Implement proper subscription management
+
+## Output Format
+
+```markdown
+## Nostr Conformity: [target]
+
+### NIP Compliance
+| NIP | Status | Notes |
+|-----|--------|-------|
+| NIP-01 | ✅ Pass | |
+| NIP-19 | ⚠️ Issue | See below |
+
+### Issues Found
+- [ ] `file:line` - Description
+
+### Optimization Opportunities
+- [ ] Description with rationale
+
+### Custom Event Validation
+| Kind | Valid | Notes |
+|------|-------|-------|
+| 30078 | ✅ | Machine status properly formatted |
+```
+
+## Example Usage
+
+```
+/nostr-check packages/nostr-client/src/events.ts --nips NIP-01,NIP-19
+```