chore: fix formatting and lint errors across Makefile, backend, and adminfront

This commit addresses several linting and formatting issues that caused CI checks to fail:
- Makefile: Removed obsolete '--organize-imports-enabled' from Biome and switched to '@biomejs/biome'.
- backend: Fixed spacing and alignment issues according to gofmt.
- adminfront: Fixed multiple unused variables and imports, and configured unsafe fixes in the Biome config to remove dead code.

backend/internal/handler/user_handler.go

@@ -2050,7 +2050,7 @@ func (h *UserHandler) UpdateUser(c *fiber.Ctx) error {
 	// Validate all collected LoginIDs
 	userEmail := extractTraitString(traits, "email")
 	userPhone := extractTraitString(traits, "phone_number")
-	
+
 	allEmails := []string{userEmail}
 	if secondaryRaw, exists := traits["sub_email"]; exists {
 		if secondaryEmails, ok := secondaryRaw.([]interface{}); ok {