Fix admin route access and backend configuration

- Added /admin redirect to login page in nginx config
- Fixed backend server.js route ordering for proper admin handling
- Updated authentication middleware and routes
- Added user management routes
- Configured PostgreSQL integration
- Updated environment configuration

Sky_Art_shop/Views/AdminPortfolio/EditProject.cshtml

@@ -0,0 +1,87 @@
+@model SkyArtShop.Models.PortfolioProject
+@{
+    Layout = "~/Views/Shared/_AdminLayout.cshtml";
+    ViewData["Title"] = "Edit Project";
+    var categories = ViewBag.Categories as List<SkyArtShop.Models.PortfolioCategory> ?? new();
+}
+<div class="card">
+    <div class="card-body">
+        <form method="post">
+            <div asp-validation-summary="All" class="text-danger mb-3"></div>
+            <div class="mb-3">
+                <label class="form-label">Title</label>
+                <input class="form-control" name="Title" value="@Model.Title" />
+            </div>
+            <div class="mb-3">
+                <label class="form-label">Category</label>
+                <select class="form-select" name="CategoryId">
+                    @foreach (var c in categories)
+                    {
+                        <option value="@c.Id" selected="@(Model.CategoryId == c.Id ? "selected" : null)">@c.Name</option>
+                    }
+                </select>
+            </div>
+            <div class="mb-3">
+                <label class="form-label">Description</label>
+                <textarea class="form-control" id="portfolioDescription" name="Description">@Model.Description</textarea>
+            </div>
+            <div class="mb-3">
+                <label class="form-label">Display Order</label>
+                <input type="number" class="form-control" name="DisplayOrder" value="@Model.DisplayOrder" />
+            </div>
+            <button class="btn btn-primary" type="submit">Save</button>
+            <a class="btn btn-secondary" href="/admin/portfolio/projects">Cancel</a>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+<script src="https://cdn.ckeditor.com/ckeditor5/40.1.0/classic/ckeditor.js"></script>
+<script>
+let portfolioEditor;
+ClassicEditor
+    .create(document.querySelector('#portfolioDescription'), {
+        toolbar: {
+            items: [
+                'heading', '|',
+                'bold', 'italic', 'underline', 'strikethrough', '|',
+                'link', 'blockQuote', '|',
+                'bulletedList', 'numberedList', '|',
+                'outdent', 'indent', '|',
+                'alignment', '|',
+                'insertTable', '|',
+                'fontSize', 'fontColor', 'fontBackgroundColor', '|',
+                'removeFormat', '|',
+                'undo', 'redo', '|',
+                'sourceEditing'
+            ],
+            shouldNotGroupWhenFull: true
+        },
+        heading: {
+            options: [
+                { model: 'paragraph', title: 'Paragraph', class: 'ck-heading_paragraph' },
+                { model: 'heading1', view: 'h1', title: 'Heading 1', class: 'ck-heading_heading1' },
+                { model: 'heading2', view: 'h2', title: 'Heading 2', class: 'ck-heading_heading2' },
+                { model: 'heading3', view: 'h3', title: 'Heading 3', class: 'ck-heading_heading3' },
+                { model: 'heading4', view: 'h4', title: 'Heading 4', class: 'ck-heading_heading4' }
+            ]
+        },
+        fontSize: {
+            options: ['small', 'default', 'big']
+        },
+        table: {
+            contentToolbar: ['tableColumn', 'tableRow', 'mergeTableCells']
+        },
+        htmlSupport: {
+            allow: [{ name: /.*/, attributes: true, classes: true, styles: true }]
+        }
+    })
+    .then(editor => {
+        portfolioEditor = editor;
+        document.querySelector('form').addEventListener('submit', function(e) {
+            document.querySelector('#portfolioDescription').value = portfolioEditor.getData();
+        });
+    })
+    .catch(error => { console.error(error); });
+</script>
+}