feat: accounting integration (D27), SMS relay driver (D26), rebuild user apps

- Add Tahesab/Zarrin accounting sync module with admin panel UI
- Add SMS relay driver as default provider, refactor SMS into driver pattern
- Update customer services, orders, products, and catalog queries
- Rebuild user-app and user-app-v2 dist assets
- Add Prisma migration for accounting tables
- Update docker-compose and env examples
- Update parity docs (DECISIONS, ISSUES, PROGRESS)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/user-app-v2/index.html

@@ -33,7 +33,7 @@
     </style>
     <title>طلای منتزر</title>
   </head>
-  <body style="background-color: #1C2D56">
+  <body style="background-color: #ffffff">
     <div class="w-screen h-screen fixed" style="background-color: var(--c-page, #fff)"></div>
     <div id="app"></div>
     <script type="module" src="/src/main.ts"></script>