v0.15.0

Added

• Shell completions for bash, zsh, and fish (completions/), covering both git-hunk and git hunk invocation forms, with live hunk-hash completion from list --porcelain --oneline (staged hashes for reset), --ref completion from git refs, and --file path completion. Release tarballs now ship them and the Homebrew formula installs them.
• zig build fuzz — a brute-force mutating fuzzer for the diff parser (src/fuzz_driver.zig), plus a corpus-seeded fuzz test in src/diff.zig that replays deterministic regression inputs under zig build test. 8 million mutated inputs survived clean at time of writing. (Coverage-guided zig build test --fuzz is blocked on a Zig 0.16.0 stdlib bug.)
• zig build docs — CLI documentation facts (commands, flags, arguments, examples) are now single-sourced in src/spec.zig. --help and top-level usage render from it at comptime; the man page's COMMANDS/GLOBAL OPTIONS sections are generated from it; and the skill reference plus all three shell completions are coverage-checked against it. zig build docs -- --check runs in CI as a drift gate.

Changed

• --help flag display normalized to short-form-first (-h, --help, -u, --include-untracked); example columns aligned consistently across commands.
• count now documents its accepted no-op flags (--porcelain, --no-color, -v); top-level help now documents -V, --version.
• The version string is single-sourced from build.zig.zon (build.zig imports it; release builds still override via -Dversion from the tag).

Fixed

• Help and man page no longer claim --ref "combines with --staged" on add, reset, and restore — those commands reject --staged.
• Skill reference (commands.md): added previously missing --ref and --3way flag documentation across seven commands; corrected the stale claim that --file paths must match diff output exactly (they resolve relative to the current directory since 0.10.2).