thalarch-pythonlisted

# Thalarch Python Use the runtime, package manager, frameworks, typing policy, and quality tools already declared by the repository. Do not force `uv`, Poetry, Ruff, Pyright, FastAPI, Pydantic, or any other modern tool merely because it is popular. ## Preflight Identify: - supported Python versions; - `pyproject.toml`, setup/config files, lockfiles and environment manager; - runtime/framework dependencies; - formatter/linter/type checker configuration; - test runner/plugins; - packaging/distribution contract. Use the repository's existing environment and commands when available. ## Idiomatic Python Prefer clear Python-native constructs: - comprehensions/generator expressions for simple transformations; - `enumerate`, `zip`, `collections`, `itertools`, `pathlib`, context managers, and other standard-library primitives where they clarify intent; - dataclasses/value types when the repository and problem benefit from them; - precise function/type contracts rather than type noise on obvious locals; - EAFP only where the exception is the real boundary signal and failure cost is acceptable. Do not compress complex business logic into clever expressions. A readable loop is better than a dense comprehension with hidden state or difficult branching. Never use mutable default arguments unintentionally. ## Typing Follow the project's configured type checker and Python floor. - Preserve generics and protocols where they encode useful contracts. - Prefer `unknown`-equivalent