chore: release v0.1.2

[github-actions]

🤖 New release

• bx: 0.1.1 -> 0.1.2

Changelog

0.1.2 - 2026-10-03

Added

• add bx self-upgrade
• (install) print the latest release with --latest

Fixed

• restore green CI on clippy 1.99.0 and pin the Rust toolchain (#149)
• (cli) report build details from -V and --version

Other

• (deps) remove dependencies nothing references (#157)
• run cargo-mutants on each pull request diff (#156)
• derive the no-user-specific-data needles from the running machine (#155)
• read source-scanning tests' files by module directory walk (#154)
• correct top-level documentation to the shipped behaviour (#153)
• bring CI, mise and hk gates into parity and keep coverage profiles out of the tree (#152)
• gate file length at 3743 lines against a shrinking baseline (#151)
• (readme) document bx self-upgrade
• (release) forward the commit date into the cross build

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