liszt v0.2.0

Byte-identical to GNU ls 9.11 under a pinned environment with no extension flag active; faster on every measured workload on both release machines. v0.2 extensions, all off by default: Nerd-Font icons (--icons, LS_ICONS overrides, OSC 66), tree mode (--tree, one fd at any depth), and a dependency-free git status column (--git, index parsed directly, nothing hashed) - each measured 4-16x faster than the eza equivalents (bench/release/ in the tree). Full golden, fuzz, and sanitizer gates green on Linux (glibc, musl), macOS, and FreeBSD.