Set up type checking with mypy or pyright and strict config #25
Description
Context
Configure static type checking. The codebase will use Pydantic heavily, so type checker compatibility with Pydantic is important.
Options
- mypy with Pydantic plugin - mature, widely used
- pyright - faster, better inference, VS Code native
- both - belt and suspenders
Acceptance Criteria
- Type checker chosen and configured in pyproject.toml
- Strict mode enabled
- Pydantic plugin/support configured
- Initial codebase passes type checks
Dependencies
- Add design specification, license, and project setup #2 (project structure)