Terminal construction previously accepted GhosttyTerminalOptions with
dimensions and one scrollback byte limit. Remove the options struct from
the ABI and make ghostty_terminal_new accept columns and rows directly.
Add byte and line limit options to ghostty_terminal_set and forward them
to the runtime Terminal setters. NULL removes a limit, while zero bytes
disables scrollback. Update type metadata, tests, and all API examples.
This updates simdutf to my fork which has a SIMDUTF_NO_LIBCXX option
that removes all libc++ and libc++ ABI dependencies.
From there, the hand-written simd code we have has been updated to also
no longer use any libc++ features. Part of this required removing utfcpp
since it depended on libc++ (`<iterator>`).
libghostty-vt now only depends on libc.
The xcframework now generates its own headers directory with a
GhosttyVt module map instead of reusing include/ directly, which
contains the GhosttyKit module map for the macOS app. The generated
directory copies the ghostty headers and adds a module.modulemap
that exposes ghostty/vt.h as the umbrella header.
A new swift-vt-xcframework example demonstrates consuming the
xcframework from a Swift Package. It creates a terminal, writes
VT sequences, and formats the output as plain text, verifying
the full round-trip works with swift build and swift run.
