Remove BTCPay completely, integrate SilverPAY only, configure TeleBot with real token

- Removed all BTCPay references from services and configuration
- Implemented SilverPAY as sole payment provider (no fallback)
- Fixed JWT authentication with proper key length (256+ bits)
- Added UsersController with full CRUD operations
- Updated User model with Email and Role properties
- Configured TeleBot with real Telegram bot token
- Fixed launchSettings.json with JWT environment variable
- E2E tests passing for authentication, catalog, orders
- Payment creation pending SilverPAY server fix

🤖 Generated with Claude Code

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

.claude/settings.local.json

@@ -0,0 +1,37 @@
+{
+  "permissions": {
+    "allow": [
+      "WebSearch",
+      "Bash(curl:*)",
+      "Bash(cmd.exe /c \"cd /d C:\\Production\\Source\\LittleShop && git status\")",
+      "Bash(cmd.exe /c \"cd /d C:\\Production\\Source\\LittleShop && git add .\")",
+      "Bash(cmd.exe /c \"cd /d C:\\Production\\Source\\LittleShop && git add LittleShop/Models/PushSubscription.cs\")",
+      "Bash(cmd.exe /c \"cd /d C:\\Production\\Source\\LittleShop && git add LittleShop/DTOs/PushSubscriptionDto.cs\")",
+      "Bash(cmd.exe /c \"cd /d C:\\Production\\Source\\LittleShop && git add LittleShop/Services/IPushNotificationService.cs\")",
+      "Bash(dotnet run:*)",
+      "Bash(cmd.exe:*)",
+      "Read(//mnt/c/production/source/claudeenhancement/**)",
+      "Bash(netstat:*)",
+      "Read(//home/sysadmin/.config/claude/**)",
+      "Bash(claude --version)",
+      "Bash(cat:*)",
+      "Bash(timeout:*)",
+      "Bash(/mcp)",
+      "Read(//home/sysadmin/**)",
+      "Bash(claude mcp:*)",
+      "Read(//tmp/**)",
+      "Bash(chmod:*)",
+      "Bash(sshpass:*)",
+      "Bash(ssh:*)",
+      "Bash(git pull:*)",
+      "Bash(git branch:*)",
+      "Bash(git add:*)",
+      "Bash(git push:*)",
+      "Bash(tasklist)",
+      "Bash(findstr:*)",
+      "Read(//mnt/c/Production/Source/SilverLABS/SilverPAY/**)"
+    ],
+    "deny": [],
+    "ask": []
+  }
+}