Remove all Lightning/zap code, rename to Pulse ZERO v1

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Pulse is an iOS decentralized messaging app written in Swift. It uses BLE/MultipeerConnectivity for local mesh networking and Nostr relays for global reach. No servers — all peer-to-peer.
+
+## Build & Run
+
+The Xcode project lives at `Pulse/Pulse.xcodeproj`. Open it in Xcode 26+.
+
+```bash
+# Build for simulator
+xcodebuild -project Pulse/Pulse.xcodeproj -scheme Pulse \
+  -sdk iphonesimulator \
+  -destination 'platform=iOS Simulator,OS=26.0,name=iPhone 17' \
+  build
+
+# Run all tests
+xcodebuild -project Pulse/Pulse.xcodeproj -scheme PulseTests \
+  -sdk iphonesimulator \
+  -destination 'platform=iOS Simulator,OS=26.0,name=iPhone 17' \
+  test
+
+# Run a single test class
+xcodebuild -project Pulse/Pulse.xcodeproj -scheme PulseTests \
+  -sdk iphonesimulator \
+  -destination 'platform=iOS Simulator,OS=26.0,name=iPhone 17' \
+  -only-testing:PulseTests/NostrEventValidatorTests \
+  test
+```
+
+Deployment target: iOS 26.0 for the app, iOS 17.4 for test targets. Swift 5.0 for the app target.
+
+## Architecture
+
+All source is under `Pulse/Pulse/`. The app uses `@MainActor` isolation throughout managers and networking.
+
+### Dual-Transport System
+
+`UnifiedTransportManager` coordinates two transport paths:
+- **Mesh** (`MeshManager` + `BLEAdvertiser`): Local peer discovery via MultipeerConnectivity and CoreBluetooth. Uses `MCSession` with service type `_pulse-mesh._tcp`.
+- **Nostr** (`NostrTransport`): WebSocket connections to Nostr relays for global messaging and location channels.
+
+Both implement `TransportProtocol`. Messages go through `MessageRouter` (multi-hop routing, max 7 hops) and `MessageDeduplicationService` before delivery.
+
+### Key Singletons
+
+Most managers use `static let shared` singletons:
+- `ChatManager` — conversation state, link previews, message handling
+- `MeshManager` — MultipeerConnectivity session, peer discovery (this one is `@StateObject` in `PulseApp`, injected as `@EnvironmentObject`)
+- `IdentityManager` + `NostrIdentityManager` — key generation/storage, Nostr profile
+- `PersistenceManager` — SwiftData container (`PersistedMessage`, `PersistedConversation`, `PersistedGroup`)
+- `KeychainManager` — secure key storage with `.whenUnlockedThisDeviceOnly`
+
+### Security Stack
+
+`NostrEventValidator` verifies secp256k1 Schnorr signatures. `RateLimiter` prevents relay event flooding (60 events/sec). `SecureNetworkSession` enforces TLS certificate validation. `ClipboardManager` auto-clears sensitive data after 30 seconds.
+
+### Data Layer
+
+SwiftData models prefixed with `Persisted*` (`PersistedMessage`, `PersistedConversation`, `PersistedGroup`). In-memory models (`Message`, `PulsePeer`, `Group`) are used in the view layer. `PersistenceManager.shared.container` is injected via `.modelContainer()` at the app root.
+
+### Crypto
+
+- Curve25519 (X25519) key exchange + ChaCha20-Poly1305 for mesh message encryption
+- Ed25519 for mesh message signing
+- secp256k1 Schnorr for Nostr event signing
+- All via Apple CryptoKit except secp256k1
+
+## Test Suite
+
+Tests are in `Pulse/PulseTests/`. Notable test infrastructure:
+- `MeshSimulator/` — virtual peer network with `ChaosEngine`, `TopologyController`, `VirtualPeer` for simulating mesh conditions
+- Security tests cover rate limiting, Nostr event validation, and sensitive string scrubbing
+
+## Bundle ID & Background Modes
+
+Bundle ID: `com.jesse.pulse-mesh`. Background task ID: `com.jesse.pulse-mesh.discovery`. Bluetooth central/peripheral background modes enabled.