fix(core): resolve local client url redirects and stabilize dev environment

- enforce localhost:5174 for wheel campaign client URL in local development
- lock vite dev server ports using strictPort on admin (5173) and client (5174)
- sanitize .env.example and remove hardcoded staging domain
- configure root dev orchestration and docker multi-stage build context

apps/admin/index.html

@@ -3,7 +3,12 @@
   <head>
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/vite.svg" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover, maximum-scale=1.0, user-scalable=no" />
+    <meta name="theme-color" content="#4f46e5" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
+    <meta name="apple-mobile-web-app-title" content="گردونه شانس" />
+    <meta name="mobile-web-app-capable" content="yes" />
     <title>پنل مدیریت گردونه شانس و قرعه‌کشی</title>
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
@@ -11,11 +16,18 @@
     <style>
       * {
         font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+        -webkit-tap-highlight-color: transparent;
       }
-      body {
+      html, body {
         margin: 0;
+        padding: 0;
         background-color: #f0f2f5;
         direction: rtl;
+        overscroll-behavior: none;
+      }
+      #app {
+        min-height: 100%;
+        min-height: 100dvh;
       }
     </style>
   </head>