Module graph_builder 

C# GraphBuilder implementation for tier-2 graph coverage.

Migrated to use unified GraphBuildHelper following Phase 2.

Supported Features

• Function/method definitions
• Class definitions
• Interface definitions
• Method definitions (including static methods)
• Function calls
• Method calls
• Static method calls
• Async/await detection
• Namespace handling
• Using directive imports (simple, qualified, static, aliased)
• Class inheritance (Inherits edges)
• Interface implementation (Implements edges)
• Export edges (public and internal types/members)

Structs

CSharpGraphBuilder

Graph builder for C# files.