vibe-types

Add a vibe-types quick index to a CLAUDE.md file for always-on type safety guidance

Lean 4 compile-time safety techniques — dependent types, inductive types, type classes, termination checking, propositions as types, proof automation. Use this skill whenever the user writes Lean 4 code, mentions dependent types, asks about theorem proving, discusses inductive types, type classes, tactics (simp, omega, decide), subtypes, termination proofs, or any Lean type system feature. Also use when formalizing invariants, writing proof-carrying code, or porting type patterns from Scala, Rust, or Haskell to Lean.

Python type-checking constraint techniques — annotations, Union, Literal, TypedDict, Protocol, generics, TypeGuard, Final, dataclasses. Use this skill whenever the user writes Python with type hints, mentions mypy or pyright, asks about typing module features, discusses Protocol, TypedDict, NewType, dataclasses, Literal, overload, ParamSpec, or any type annotation. Also use when adding types to untyped code or debugging type checker errors.

Rust compile-time safety techniques — ownership, borrowing, lifetimes, traits, generics, Send/Sync, const generics. Use this skill whenever the user writes Rust code, mentions ownership or borrowing, asks about lifetime errors, discusses trait bounds, Send/Sync, derive macros, PhantomData, newtype patterns, or any Rust type system feature. Also use when debugging borrow checker errors or porting type patterns from Scala, Python, or Haskell to Rust.

Scala 3 compile-time safety techniques — opaque types, enums/ADTs/GADTs, givens, match types, inline, capture checking. Use this skill whenever the user writes Scala 3 code, mentions type safety, asks about compiler errors, discusses ADTs, opaque types, given instances, context functions, match types, extension methods, or any Scala type system feature. Also use when porting type patterns from Rust, Python, or Haskell to Scala 3.