Release 1.0.4

Fix MSBuild targets to preserve unprocessed source files

The previous implementation removed ALL source files from compilation
and only included rewritten files. This broke namespace resolution for
types in files without Assert() calls (like PipeMock).

This fix:
- Only removes files that were actually rewritten
- Includes both rewritten files AND unprocessed source files
- Preserves the complete compilation context

Fixes namespace resolution errors like:
CS0103: The name 'PipeMock' does not exist in the current context

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

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