Remove Settings and Setup pages along with their tests and related API services

- Deleted Settings.tsx and Setup.tsx pages, which included functionality for changing passwords and setting up an admin account.
- Removed associated test files for Setup page.
- Eliminated API service definitions related to proxy hosts, remote servers, import functionality, and health checks.
- Cleaned up mock data and test setup files.
- Removed configuration files for TypeScript, Vite, and Tailwind CSS.
- Deleted scripts for testing coverage, release management, Dockerfile validation, and Python compilation checks.
- Removed Sourcery pre-commit wrapper script.

backend/internal/api/middleware/auth.go

@@ -1,55 +0,0 @@
-package middleware
-
-import (
-	"net/http"
-	"strings"
-
-	"github.com/Wikid82/CaddyProxyManagerPlus/backend/internal/services"
-	"github.com/gin-gonic/gin"
-)
-
-func AuthMiddleware(authService *services.AuthService) gin.HandlerFunc {
-	return func(c *gin.Context) {
-		authHeader := c.GetHeader("Authorization")
-		if authHeader == "" {
-			// Try cookie
-			cookie, err := c.Cookie("auth_token")
-			if err == nil {
-				authHeader = "Bearer " + cookie
-			}
-		}
-
-		if authHeader == "" {
-			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorization header required"})
-			return
-		}
-
-		tokenString := strings.TrimPrefix(authHeader, "Bearer ")
-		claims, err := authService.ValidateToken(tokenString)
-		if err != nil {
-			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token"})
-			return
-		}
-
-		c.Set("userID", claims.UserID)
-		c.Set("role", claims.Role)
-		c.Next()
-	}
-}
-
-func RequireRole(role string) gin.HandlerFunc {
-	return func(c *gin.Context) {
-		userRole, exists := c.Get("role")
-		if !exists {
-			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized"})
-			return
-		}
-
-		if userRole.(string) != role && userRole.(string) != "admin" {
-			c.AbortWithStatusJSON(http.StatusForbidden, gin.H{"error": "Forbidden"})
-			return
-		}
-
-		c.Next()
-	}
-}