feat: Improve Mycelium example with bidirectional communication

- Remove unnecessary public key printing in master node.
- Use variable for slave public key in master node.
- Add message receiving functionality to master node.
- Remove redundant sending logic from slave node.

examples/data/deduped_mycelium_master.vsh

@@ -30,9 +30,8 @@ master.server_url = 'http://localhost:${master_port}'
 master.name = 'master_node'
 
 // Get public keys for communication
-master_inspect := mycelium.inspect(key_file_path: '/tmp/mycelium_server1/priv_key.bin')!
-
-println('Server 1 (Master Node) public key: ${master_inspect.public_key}')
+// master_inspect := mycelium.inspect(key_file_path: '/tmp/mycelium_server1/priv_key.bin')!
+// println('Server 1 (Master Node) public key: ${master_inspect.public_key}')
 
 // Initialize ourdb instances
 mut db := ourdb.new(
@@ -64,9 +63,15 @@ json_data := json.encode(sync_data)
 // Send sync message to slave
 println('\nSending sync message to slave...')
 msg := master.send_msg(
-	public_key: '46a9f9cee1ce98ef7478f3dea759589bbf6da9156533e63fed9f233640ac072c'
+	public_key: slave_public_key
 	payload:    json_data
 	topic:      'db_sync'
 )!
 
-println('Sync message sent with ID: ${msg.id} to slave with public key: 46a9f9cee1ce98ef7478f3dea759589bbf6da9156533e63fed9f233640ac072c')
+println('Sync message sent with ID: ${msg.id} to slave with public key: ${slave_public_key}')
+
+// Receive messages
+// Parameters: wait_for_message, peek_only, topic_filter
+received := master.receive_msg(wait: true, peek: false, topic: 'db_sync')!
+println('Received message from: ${received.src_pk}')
+println('Message payload: ${base64.decode_str(received.payload)}')

examples/data/deduped_mycelium_slave.vsh

@@ -51,28 +51,3 @@ defer {
 received := slave.receive_msg(wait: true, peek: false, topic: 'db_sync')!
 println('Received message from: ${received.src_pk}')
 println('Message payload: ${base64.decode_str(received.payload)}')
-
-// // Store in slave db
-// println('\nStoring data in slave node DB...')
-// data := 'Test data for sync - ' + time.now().str()
-// id := db.set(data: data.bytes())!
-// println('Successfully stored data in slave node DB with ID: ${id}')
-
-// // Create sync data
-// sync_data := SyncData{
-// 	id:   id
-// 	data: data
-// }
-
-// // Convert to JSON
-// json_data := json.encode(sync_data)
-
-// // Send sync message to slave
-// println('\nSending sync message to slave...')
-// msg := slave.send_msg(
-// 	public_key: '46a9f9cee1ce98ef7478f3dea759589bbf6da9156533e63fed9f233640ac072c'
-// 	payload:    json_data
-// 	topic:      'db_sync'
-// )!
-
-// println('Sync message sent with ID: ${msg.id} to slave with public key: 46a9f9cee1ce98ef7478f3dea759589bbf6da9156533e63fed9f233640ac072c')