Toolchain 0.3.3

Toolchain 0.3.3 strengthens the compile-time and source-quality contracts shared by Tetrodotoxin repositories.

Main update:

Compiler-only facilities now live in explicit Toolchain::Compile headers, while formatter policy makes comment contracts and unsafe data conversions reviewable at their owning boundary.

Features:

• Add Toolchain::Compile::Allocation for arrays that can exist only during constant evaluation.
• Add Toolchain::Compile::SourceLocation as the compiler call-site primitive that consumers wrap with their own string and safety contracts.
• Keep compile and lifetime helpers out of the umbrella header so consumers declare their actual dependencies.
• Require native named casts and bit casts to pass through Perimortem's reviewed Data boundary.
• Reject vague admit-family aliases and check relocation comments against their source, destination, and lifetime responsibilities.
• Require open container capabilities to document every policy hook with its callable shape and local invariant.
• Enforce the canonical value terminology for Vector and Bytes comments.
• Preserve policy signature formatting without treating indented declarations as prose.
• Package and independently verify the new compile headers through the SDK integration boundary.