docs: remove promotional attributions

- Remove Claude Code attribution from release notes
- Remove Claude Code mentions from README acknowledgments and footer
- Keep technical documentation references to CLAUDE.md

.github/workflows/publish.yml

@@ -192,9 +192,6 @@ jobs:
           ### Installation
           - **iOS**: Download the `.zip` file, extract, and install via Xcode or TestFlight
           - **macOS**: Download the `.zip` file, extract, and move to Applications folder
-
-          ---
-          🤖 Generated with [Claude Code](https://claude.com/claude-code)
         draft: false
         prerelease: ${{ contains(steps.get_version.outputs.version, 'alpha') || contains(steps.get_version.outputs.version, 'beta') || contains(steps.get_version.outputs.version, 'rc') }}
         files: |

README.md

@@ -239,7 +239,6 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 - Built with [.NET MAUI](https://dotnet.microsoft.com/apps/maui)
 - MVVM powered by [CommunityToolkit.Mvvm](https://github.com/CommunityToolkit/dotnet)
 - Testing with [xUnit](https://xunit.net/), [FluentAssertions](https://fluentassertions.com/), and [NSubstitute](https://nsubstitute.github.io/)
-- Developed with assistance from [Claude Code](https://claude.com/claude-code)
 
 ## 🎭 Why "HihaArvio"?
 
@@ -257,5 +256,3 @@ Perfect for:
 **Bundle ID**: `net.ivuorinen.HihaArvio`
 **Version**: 1.0
 **Platforms**: iOS 15.0+, macOS 12.0+
-
-🤖 Generated with [Claude Code](https://claude.com/claude-code)