feat: order revision, rial wage from variant, product tags; drop user-app-v2

Admin order edit with category chips and timeline; customer checkout charges variant rialWage; product tags; retire the unused user-app-v2 tree.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/user-app/index.html

@@ -34,8 +34,23 @@
     </style>
     <title>%BRAND_TITLE%</title>
   </head>
-  <body style="background-color: #fff">
-    <div class="w-screen h-screen fixed" style="background-color: var(--c-page, #fff)"></div>
+  <body>
+    <!--
+      Boot splash: same phone column as #app so desktop never flashes a
+      full-bleed white sheet. Removed in main.ts once Vue mounts.
+    -->
+    <div
+      id="app-splash"
+      style="
+        position: fixed;
+        inset-block: 0;
+        inset-inline: max(0px, calc(50vw - 215px));
+        width: min(100vw, 430px);
+        margin-inline: auto;
+        background-color: var(--c-page, #fff);
+        z-index: 0;
+      "
+    ></div>
     <div id="app"></div>
     <script type="module" src="/src/main.ts"></script>
   </body>