Initial commit of LittleShop project (excluding large archives)

- BTCPay Server integration
- TeleBot Telegram bot
- Review system
- Admin area
- Docker deployment configuration

🤖 Generated with [Claude Code](https://claude.ai/code)

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

VapidKeyGenerator/VapidKeyGenerator.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="WebPush" Version="1.0.12" />
+  </ItemGroup>
+
+</Project>