feat!: Initial CSharpCodeBuilder

[samtrion]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces the initial implementation of a CSharpCodeBuilder for constructing C# code snippets with automatic indentation, conditional appending, formatting support, and extensive unit tests.

• Implements CodeBuilderBase and CSharpCodeBuilder with Append, AppendLine, AppendIf, AppendLineIf, AppendFormat, EnsureCapacity, Clear, and XML-doc methods
• Adds over 30 test files covering core behavior, properties, indentation, capacity, conditional logic, formatting, and documentation generation
• Updates project files (Directory.Build.props, Directory.Packages.props), CI workflow, and solution structure to support multi-target frameworks and TUnit

Reviewed Changes

Copilot reviewed 36 out of 36 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/NetEvolve.CodeBuilder/CodeBuilderBase.EnsureIndented.cs	Added indentation helper and indent level APIs
src/NetEvolve.CodeBuilder/CSharpCodeBuilder.Append.cs	Core Append logic with brace-driven indenting
src/NetEvolve.CodeBuilder/CSharpCodeBuilder.AppendLineIf.cs	Conditional line-append overloads
src/NetEvolve.CodeBuilder/CSharpCodeBuilder.AppendFormat.cs	Culture-aware formatting methods
src/NetEvolve.CodeBuilder/CSharpCodeBuilder.Clear.cs	Reset content and indentation
src/NetEvolve.CodeBuilder/CSharpCodeBuilder.Documentation.cs	XML documentation comment methods
tests/NetEvolve.CodeBuilder.Tests.Unit/*.cs	Comprehensive unit tests for all APIs
.github/workflows/cicd.yml	Switched to single-pipeline build step

Comments suppressed due to low confidence (3)

.github/workflows/cicd.yml:34

• The solution path points to HealthChecks.slnx instead of this repository's CodeBuilder.slnx. Update to the correct solution filename.

      solution: ./HealthChecks.slnx

src/NetEvolve.CodeBuilder/CodeBuilderBase.EnsureIndented.cs:3

• The Interlocked API is used but System.Threading is not imported. Add using System.Threading; at the top of the file to resolve compilation errors.

using System.Runtime.CompilerServices;

src/NetEvolve.CodeBuilder/CSharpCodeBuilder.Clear.cs:3

• Interlocked.Exchange is used but System.Threading is not imported. Add using System.Threading; to this file.

public partial record CSharpCodeBuilder