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Evaluate all operands in logical AND

- Evaluate both operands of & (expectations) and && (booleans) even when
the left operand fails. This shows all failures at once instead of
stopping at the first one, similar to FluentAssertions' AssertionScope.

- Rendering now reports "Both operands were false" when applicable.

Update migration doc with proximity assertion syntax

Document string patterns, collection ordering/uniqueness, and object …

…equivalency

Tidy up CONSTITUTION.md

Fix(build): Correct MSBuild targets for cross-platform compatibility

Add project brief

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>

Fix project paths

Fix publish flow for new package structure