Updated binary format spec for v0.3.0 type system changes:
- Section 3 (Types): concept, sub_concept, concept_comparison encoding
- Section 4 (Characters): Value/Expression discriminant renames
- Section 5 (Templates): species_base field for inheritance
- Section 12 (Life Arcs): required_fields with type annotations
- Section 13 (Enums): note on sub_concept enum distinction
- Changelog and version history updated
Also fixed clippy/import issues in LSP semantic tokens module.
