refactor: reorganize NIP-BE into subpackages and add README

Restructured nipBEBle/ into logical subpackages:
- Root: public API surface (BleNostrMesh, BleConfig, BlePeer, BleRole)
- protocol/: wire format (BleMessageChunker, BleChunkAssembler)
- transport/: platform BLE abstraction (BleTransport, AndroidBleTransport)
- relay/: Nostr protocol over BLE (BleNostrClient, BleNostrServer, BleMeshManager)

Added README.md with quick start guide, package structure overview,
advanced usage examples, and wire protocol reference.

https://claude.ai/code/session_01Tz5E73Rj7tL48A3qUGS5DT

quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nipBEBle/transport/AndroidBleTransport.kt

@@ -18,7 +18,7 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.transport
 
 import android.annotation.SuppressLint
 import android.bluetooth.BluetoothAdapter
@@ -41,6 +41,10 @@ import android.bluetooth.le.ScanResult
 import android.bluetooth.le.ScanSettings
 import android.content.Context
 import android.os.ParcelUuid
+import com.vitorpamplona.quartz.nipBEBle.AndroidBleTransportContract
+import com.vitorpamplona.quartz.nipBEBle.BleConfig
+import com.vitorpamplona.quartz.nipBEBle.BlePeer
+import com.vitorpamplona.quartz.nipBEBle.BleRole
 import com.vitorpamplona.quartz.utils.Log
 import java.util.UUID
 

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/BleNostrMesh.kt

@@ -24,6 +24,11 @@ import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip01Core.relay.client.single.IRelayClient
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toClient.Message
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.Command
+import com.vitorpamplona.quartz.nipBEBle.relay.BleMeshListener
+import com.vitorpamplona.quartz.nipBEBle.relay.BleMeshManager
+import com.vitorpamplona.quartz.nipBEBle.relay.BleNostrServer
+import com.vitorpamplona.quartz.nipBEBle.transport.BleTransport
+import com.vitorpamplona.quartz.nipBEBle.transport.BleTransportListener
 
 /**
  * Easy-to-use facade for NIP-BE Nostr BLE mesh networking.

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/README.md

@@ -0,0 +1,145 @@
+# NIP-BE: Nostr BLE Communications Protocol
+
+Kotlin Multiplatform implementation of [NIP-BE](https://github.com/nostr-protocol/nips/blob/master/BE.md)
+for peer-to-peer Nostr event synchronization over Bluetooth Low Energy.
+
+Compatible with [KoalaSat/samiz](https://github.com/KoalaSat/samiz).
+
+## Quick Start (Android)
+
+```kotlin
+// 1. Create the mesh (auto-wires transport)
+val mesh = BleNostrMesh(AndroidBleTransport(context))
+
+// 2. Listen for events from nearby peers
+mesh.onEvent { event, peer ->
+    Log.d("BLE", "Received kind ${event.kind} from ${peer.deviceUuid}")
+    myDatabase.save(event)
+}
+
+// 3. Optional: track peer connectivity
+mesh.onPeerConnected { peer -> updatePeerCount(mesh.connectedPeers().size) }
+mesh.onPeerDisconnected { peer -> updatePeerCount(mesh.connectedPeers().size) }
+mesh.onError { error -> Log.e("BLE", error) }
+
+// 4. Start (begins advertising + scanning)
+mesh.start()
+
+// 5. Broadcast events to all connected peers
+mesh.broadcast(mySignedEvent)
+
+// 6. Stop when done
+mesh.stop()
+```
+
+### Required Android Permissions
+
+```xml
+<uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
+<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+<uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
+<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+```
+
+Request these at runtime before calling `mesh.start()`.
+
+## How It Works
+
+When two devices running NIP-BE discover each other:
+
+1. **Discovery** - Both devices advertise and scan for the Nostr BLE service UUID
+2. **Role assignment** - The device with the higher UUID becomes the GATT Server (relay),
+   the other becomes the GATT Client
+3. **Connection** - The client connects to the server's GATT service
+4. **Messaging** - NIP-01 JSON messages are DEFLATE-compressed, split into chunks,
+   and exchanged via BLE characteristics
+5. **Event spreading** - New events are automatically forwarded to all connected peers
+
+## Package Structure
+
+```
+nipBEBle/
+  BleNostrMesh.kt           # Easy-to-use facade (start here)
+  BleConfig.kt              # NIP-BE constants (UUIDs, sizes)
+  BlePeer.kt                # Peer data model
+  BleRole.kt                # Role assignment (SERVER/CLIENT)
+
+  protocol/                  # Wire format
+    BleMessageChunker.kt     # DEFLATE compression + chunk splitting/joining
+    BleChunkAssembler.kt     # Reassembles incoming chunks into messages
+
+  transport/                 # Platform BLE abstraction
+    BleTransport.kt          # Interface for BLE operations
+    AndroidBleTransport.kt   # Android implementation (androidMain)
+
+  relay/                     # Nostr relay protocol over BLE
+    BleNostrClient.kt        # Client side (implements IRelayClient)
+    BleNostrServer.kt        # Server side (receives commands, sends messages)
+    BleMeshManager.kt        # Orchestrates discovery, connections, broadcasting
+```
+
+## Advanced Usage
+
+### Use a BLE peer as a standard relay client
+
+`BleNostrClient` implements `IRelayClient`, so you can use BLE peers alongside
+WebSocket relays in the existing subscription infrastructure:
+
+```kotlin
+val relayClient = mesh.getRelayClient(peer.deviceUuid)
+relayClient?.sendIfConnected(ReqCmd("sub1", listOf(filter)))
+```
+
+### Access raw protocol messages
+
+```kotlin
+mesh.onMessage { relay, msg ->
+    // Nostr messages received when acting as client (EVENT, EOSE, OK, etc.)
+}
+
+mesh.onCommand { server, cmd ->
+    // Nostr commands received when acting as server (REQ, EVENT, CLOSE, etc.)
+}
+```
+
+### Implement a custom BLE transport
+
+For platforms without a built-in transport, implement `BleTransport`:
+
+```kotlin
+class MyPlatformBleTransport : BleTransport {
+    override val deviceUuid = UUID.randomUUID().toString()
+    override fun startAdvertising() { /* ... */ }
+    override fun startScanning() { /* ... */ }
+    // ... other methods
+}
+```
+
+### Use BleMeshManager directly
+
+For full control over the relay protocol layer:
+
+```kotlin
+val transport = AndroidBleTransport(context)
+val manager = BleMeshManager(transport, object : BleMeshListener {
+    override fun onEventReceived(event: Event, fromPeer: BlePeer) { /* ... */ }
+})
+transport.setListener(manager)
+manager.start()
+```
+
+## Wire Protocol
+
+Messages follow [NIP-01](https://github.com/nostr-protocol/nips/blob/master/01.md) JSON format,
+compressed with DEFLATE and split into chunks:
+
+```
+[chunk index (1 byte)][payload (up to 500 bytes)][total chunks (1 byte)]
+```
+
+| GATT Characteristic | UUID | Direction |
+|---------------------|------|-----------|
+| Write | `87654321-0000-1000-8000-00805f9b34fb` | Client -> Server |
+| Read (Notify) | `12345678-0000-1000-8000-00805f9b34fb` | Server -> Client |
+
+Service UUID: `0000180f-0000-1000-8000-00805f9b34fb`

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/protocol/BleChunkAssembler.kt

@@ -18,7 +18,7 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.protocol
 
 /**
  * Accumulates incoming BLE chunks for a single message and reassembles

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/protocol/BleMessageChunker.kt

@@ -18,8 +18,9 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.protocol
 
+import com.vitorpamplona.quartz.nipBEBle.BleConfig
 import com.vitorpamplona.quartz.utils.Deflate
 
 /**

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/relay/BleMeshManager.kt

@@ -18,7 +18,7 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.relay
 
 import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip01Core.relay.client.listeners.RelayConnectionListener
@@ -27,6 +27,12 @@ import com.vitorpamplona.quartz.nip01Core.relay.commands.toClient.EventMessage
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toClient.Message
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.Command
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.EventCmd
+import com.vitorpamplona.quartz.nipBEBle.BlePeer
+import com.vitorpamplona.quartz.nipBEBle.BleRole
+import com.vitorpamplona.quartz.nipBEBle.assignRole
+import com.vitorpamplona.quartz.nipBEBle.protocol.BleMessageChunker
+import com.vitorpamplona.quartz.nipBEBle.transport.BleTransport
+import com.vitorpamplona.quartz.nipBEBle.transport.BleTransportListener
 import com.vitorpamplona.quartz.utils.Log
 
 /**

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/relay/BleNostrClient.kt

@@ -18,13 +18,18 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.relay
 
 import com.vitorpamplona.quartz.nip01Core.core.OptimizedJsonMapper
 import com.vitorpamplona.quartz.nip01Core.relay.client.listeners.RelayConnectionListener
 import com.vitorpamplona.quartz.nip01Core.relay.client.single.IRelayClient
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.Command
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+import com.vitorpamplona.quartz.nipBEBle.BleConfig
+import com.vitorpamplona.quartz.nipBEBle.BlePeer
+import com.vitorpamplona.quartz.nipBEBle.protocol.BleChunkAssembler
+import com.vitorpamplona.quartz.nipBEBle.protocol.BleMessageChunker
+import com.vitorpamplona.quartz.nipBEBle.transport.BleTransport
 import com.vitorpamplona.quartz.utils.Log
 
 /**

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/relay/BleNostrServer.kt

@@ -18,11 +18,16 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.relay
 
 import com.vitorpamplona.quartz.nip01Core.core.OptimizedJsonMapper
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toClient.Message
 import com.vitorpamplona.quartz.nip01Core.relay.commands.toRelay.Command
+import com.vitorpamplona.quartz.nipBEBle.BleConfig
+import com.vitorpamplona.quartz.nipBEBle.BlePeer
+import com.vitorpamplona.quartz.nipBEBle.protocol.BleChunkAssembler
+import com.vitorpamplona.quartz.nipBEBle.protocol.BleMessageChunker
+import com.vitorpamplona.quartz.nipBEBle.transport.BleTransport
 import com.vitorpamplona.quartz.utils.Log
 
 /**

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipBEBle/transport/BleTransport.kt

@@ -18,7 +18,9 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.transport
+
+import com.vitorpamplona.quartz.nipBEBle.BlePeer
 
 /**
  * Platform-agnostic interface for BLE transport operations.

quartz/src/commonTest/kotlin/com/vitorpamplona/quartz/nipBEBle/protocol/BleChunkAssemblerTest.kt

@@ -18,7 +18,7 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.protocol
 
 import kotlin.test.Test
 import kotlin.test.assertEquals

quartz/src/commonTest/kotlin/com/vitorpamplona/quartz/nipBEBle/protocol/BleMessageChunkerTest.kt

@@ -18,7 +18,7 @@
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
-package com.vitorpamplona.quartz.nipBEBle
+package com.vitorpamplona.quartz.nipBEBle.protocol
 
 import kotlin.test.Test
 import kotlin.test.assertEquals