feat: Sprint 5 — xterm.js terminal with WebSocket mock shell, Alpine tab management

app/backend/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"log"
 
+	"github.com/gofiber/contrib/websocket"
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/compress"
 	"github.com/gofiber/fiber/v2/middleware/logger"
@@ -52,6 +53,12 @@ func main() {
 	app.Get("/settings", handler.Settings)
 	app.Post("/settings", handler.UpdateConfig)
 	app.Get("/brief", handler.Brief)
+	app.Get("/terminal", handler.Terminal)
+	app.Get("/terminal/ws/:host", websocket.New(func(c *websocket.Conn) {
+		handler.TerminalWS(c)
+	}, websocket.Config{
+		Origins: []string{"*"},
+	}))
 	app.Get("/sftp", handler.SFTP)
 	app.Get("/sftp/pane", handler.SFTPPane)
 	app.Post("/sftp/mkdir", handler.CreateFolder)