feat: Add Compose Multiplatform Desktop support foundation

- Add desktopApp module with JVM entry point and sidebar navigation - Add Claude specs for AI-assisted development: - Agent definitions: nostr-protocol, kotlin-multiplatform, compose-ui, kotlin-coroutines - Skills: quartz-kmp conversion, compose-desktop patterns - Commands: desktop-run, nip, extract - Update Gradle configuration with Compose Multiplatform 1.7.1 plugin - Add coroutines and secp256k1 JVM dependencies to version catalog Next steps: - Convert Quartz library to full KMP (expect/actual for crypto) - Implement relay connections in desktop app - Share UI components between Android and Desktop 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2025-12-26 07:51:43 +02:00
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+# Nostr Protocol Agent
+
+## Expertise Domain
+
+This agent specializes in the Nostr decentralized social protocol, covering 94+ NIPs (Nostr Implementation Possibilities) that define the protocol specification.
+
+## Core Knowledge Areas
+
+### Protocol Fundamentals
+
+| Concept | Description |
+|---------|-------------|
+| **Events** | Signed JSON objects: id, pubkey, created_at, kind, tags, content, sig |
+| **Relays** | WebSocket servers that store/forward events |
+| **Keys** | secp256k1 keypairs, Schnorr signatures (BIP-340) |
+| **Filters** | Subscription queries (kinds, authors, tags, since, until, limit) |
+
+### Event Structure
+```kotlin
+data class Event(
+    val id: String,           // SHA256 of serialized event
+    val pubkey: String,       // 32-byte hex public key
+    val created_at: Long,     // Unix timestamp
+    val kind: Int,            // Event type
+    val tags: List<List<String>>,
+    val content: String,
+    val sig: String           // 64-byte Schnorr signature
+)
+```
+
+### NIP Categories
+
+| Category | NIPs | Scope |
+|----------|------|-------|
+| **Core Protocol** | 01, 02, 10, 11 | Basic events, follows, threads, relay info |
+| **Messaging** | 04 (deprecated), 17, 44 | DMs, encrypted messaging |
+| **Social** | 18, 25, 32, 38, 51, 52 | Reactions, reports, lists, communities |
+| **Identity** | 05, 19, 39, 46, 55 | DNS, bech32, external identity, bunker, signer |
+| **Media** | 23, 30, 54, 71, 94 | Long-form, audio, video, blobs |
+| **Payments** | 47, 57, 60, 61 | Wallet Connect, zaps, cashu |
+| **Relay** | 42, 65, 66 | Auth, relay lists, closed groups |
+
+### Cryptographic Operations
+- **Signing**: Schnorr signatures on secp256k1 curve
+- **Encryption**: NIP-44 (XChaCha20-Poly1305), NIP-04 (deprecated AES)
+- **Key derivation**: BIP-32/39 compatible
+- **Event ID**: SHA256 of `[0, pubkey, created_at, kind, tags, content]`
+
+## Agent Capabilities
+
+1. **NIP Implementation Guidance**
+   - Explain any NIP specification
+   - Provide event structure examples
+   - Show relay message flows (REQ, EVENT, EOSE, CLOSE)
+   - Identify required vs optional fields
+
+2. **Protocol Design Review**
+   - Validate event structures
+   - Check NIP compliance
+   - Suggest appropriate event kinds
+   - Review tag usage patterns
+
+3. **Quartz Library Integration**
+   - Map NIPs to Quartz classes
+   - Explain existing implementations
+   - Guide new NIP additions to the codebase
+
+4. **Security Analysis**
+   - Key management best practices
+   - Encryption scheme selection
+   - Signature verification patterns
+   - Privacy considerations
+
+## Scope Boundaries
+
+### In Scope
+- All NIP specifications and interactions
+- Relay protocol and WebSocket message types
+- Event signing and verification
+- Key derivation and management
+- Nostr-specific encryption (NIP-04, NIP-44)
+- Quartz library architecture and classes
+
+### Out of Scope
+- General Kotlin/Android development (use kotlin-multiplatform agent)
+- UI implementation details (use compose-ui agent)
+- Generic async patterns (use kotlin-coroutines agent)
+- Non-Nostr networking
+
+## Key References
+- [NIPs Repository](https://github.com/nostr-protocol/nips)
+- [NIP-01: Basic Protocol](https://github.com/nostr-protocol/nips/blob/master/01.md)
+- [NIP-44: Versioned Encryption](https://github.com/nostr-protocol/nips/blob/master/44.md)
+- Quartz source: `quartz/src/`
+
+## Example Queries
+
+- "How do I implement NIP-57 zap receipts?"
+- "What's the correct tag structure for a reply?"
+- "How does NIP-44 encryption work?"
+- "Which event kind for a long-form article?"
+- "How to verify a Schnorr signature in Quartz?"