fix: resolve compilation errors in frontend and backend

backend/handlers/admin/patch_tests.go

@@ -3,10 +3,10 @@ package admin
 import (
 	"crussell/db"
 	"crussell/internal/validators"
-	"crussell/mw"
 	"database/sql"
 	"encoding/json"
 	"net/http"
+	"strconv"
 
 	"github.com/go-chi/chi/v5"
 )
@@ -117,38 +117,38 @@ func UpdatePatchTest(w http.ResponseWriter, r *http.Request) {
 	i := 1
 
 	if req.Name != nil {
-		query += "name = $" + string(rune('0'+i)) + ", "
+		query += "name = $" + strconv.Itoa(i) + ", "
 		args = append(args, *req.Name)
 		i++
 	}
 	if req.Description != nil {
-		query += "description = $" + string(rune('0'+i)) + ", "
+		query += "description = $" + strconv.Itoa(i) + ", "
 		args = append(args, *req.Description)
 		i++
 	}
 	if req.NoticeDurationHours != nil {
-		query += "notice_duration_hours = $" + string(rune('0'+i)) + ", "
+		query += "notice_duration_hours = $" + strconv.Itoa(i) + ", "
 		args = append(args, *req.NoticeDurationHours)
 		i++
 	}
 	if req.ExpiryMonths != nil {
-		query += "expiry_months = $" + string(rune('0'+i)) + ", "
+		query += "expiry_months = $" + strconv.Itoa(i) + ", "
 		args = append(args, *req.ExpiryMonths)
 		i++
 	}
 	if req.ServiceIDs != nil {
-		query += "service_ids = $" + string(rune('0'+i)) + ", "
+		query += "service_ids = $" + strconv.Itoa(i) + ", "
 		args = append(args, req.ServiceIDs)
 		i++
 	}
 
 	query = query[:len(query)-2]
-	query += " WHERE id = $" + string(rune('0'+i))
+	query += " WHERE id = $" + strconv.Itoa(i)
 	args = append(args, id)
 
 	_, err := db.DB.Exec(r.Context(), query, args...)
 	if err != nil {
-		http.Error(w, "Failed to update patch test: "+err.Error(), http.StatusInternalServerError)
+		http.Error(w, "Failed to update patch test: " + err.Error() + " Query: " + query, http.StatusInternalServerError)
 		return
 	}