chore: release v0.4.0

[torabit]

🤖 New release

• vanadis: 0.3.5 -> 0.4.0 (⚠ API breaking changes)

⚠ vanadis breaking changes

--- failure enum_no_repr_variant_discriminant_changed: enum variant had its discriminant change value ---

Description:
The enum's variant had its discriminant value change. This breaks downstream code that used its value via a numeric cast like `as isize`.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html#assigning-discriminant-values
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.50.0/src/lints/enum_no_repr_variant_discriminant_changed.ron

Failed in:
  variant Problem::Home 8 -> 9 in /tmp/.tmpRjqz05/vanadis/src/config.rs:288

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.50.0/src/lints/enum_variant_added.ron

Failed in:
  variant Problem:Shell in /tmp/.tmpRjqz05/vanadis/src/config.rs:280

Changelog

0.4.0 - 2026-09-08

Added

• (hook) print the snippet a shell evaluates to follow an apply (#80)

Other

• (hook) decide how a sourced target follows an apply (#79)

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