feat: remove unused client mutex

- remove unused Mutex from `models.Client` struct
- remove lock from `HandleConnection()`
- replace websocket.Conn with models.Client in `handleClientCommands()`

🤖

pkg/models/client.go

@@ -3,7 +3,6 @@ package models
 import (
 	"github.com/charmbracelet/log"
 	"github.com/gorilla/websocket"
-	"sync"
 )
 
 // Represents a command from the client (start/stop)
@@ -15,16 +14,12 @@ type ClientCommand struct {
 
 // Represents a single client
 type Client struct {
-	Conn  *websocket.Conn // Websocket connection of the client
-	Mutex sync.Mutex      // Mutex used to lock
+	Conn *websocket.Conn
 }
 
 // Sends a message to the websocket.
 // Automatically locks and unlocks the client mutex, to ensure that only one goroutine can write at a time.
 func (c *Client) SendMessage(messageType int, data []byte) error {
-	c.Mutex.Lock()
-	defer c.Mutex.Unlock()
-
 	err := c.Conn.WriteMessage(messageType, data)
 	if err != nil {
 		log.Error("Error writing to WebSocket:", "msg", err)