v1.0.0

• Add .gitattributes, .gitignore, README.md, and LICENSE.txt (17ddd58)
• Add project scaffold: solution, csproj, config, manifests, and assets (35fddd8)
• Add core models and input validation (559d908)
• Add environment service for registry read and elevated write (56140b0)
• Add state snapshot, undo/redo, and file import/export services (6787004)
• Add MVVM view models (8e976dc)
• Add WinUI layer: windows, templates, converters, and helpers (f969ba6)
• Add unit test suite (168 tests) (2e7ab30)
• Add developer and user documentation (84e9c21)
• Refactor core logic, path validation, and application assets (9e4a30f)
• Enhance test suite and eliminate skipped tests (f6dc81c)
• Add development scripts and update tooling configuration (c207dcc)
• Update project metadata and add AI acknowledgments (8b418db)
• Optimize list operations and refine coding standards (2792807)
• Finalize automated CI/CD pipeline and structural refinements (975ba63)
• Refine CI/CD pipeline and strengthen project rules (102b9a2)
• Enforce pure unit tests and implement 'Internal for Testing' pattern (851d442)
• Introduce WinEnvEdit.Core and migrate core logic (e617f02)
• Migrate to xUnit and align tests with Core architecture (110cc9d)
• UI refinement, documentation cleanup, and CI restoration (b07c8eb)
• Consolidate build scripts and modernize installer (b334f3b)
• Configure framework-dependent deployment for WinUI 3 app (5221a0b)
• Document deployment architecture and update build instructions (306ef84)
• Remove unused imports from Core services (81624fc)
• Refactor test infrastructure and improve test data builders (adedbad)
• Clean up UI layer and remove unused imports (ed8aecc)
• Update CI/CD pipeline and tooling configuration (bfe98b7)
• Polish documentation and improve readability (c858d0f)
• Prepare for winget community repository submission (6731c87)