fix: make indexed_range::accessor move constructible (#444)

* fix: make indexed_range::accessor move constructible

libc++ 21 implements std::generate with a lambda that takes the
dereferenced iterator by value through an identity projection. This
needs an accessible move constructor on the accessor proxy, so
indexed_test failed to compile with Apple clang 21. The copy
constructor stays private.

Assisted-by: ClaudeCode:claude-fable-5-1

* Apply suggestion from @henryiii

Only use console window size if ioctl(TIOCGWINSZ) succeeded. (#418)

This avoids potentially using uninitialized data if ioctl fails. Also, zero-initialize the winsize struct to begin with.

Only use console window size if ioctl(TIOCGWINSZ) succeeded. (#418)

This avoids potentially using uninitialized data if ioctl fails. Also, zero-initialize the winsize struct to begin with.

Only use console window size if ioctl(TIOCGWINSZ) succeeded. (#418)

This avoids potentially using uninitialized data if ioctl fails. Also, zero-initialize the winsize struct to begin with.

Only use console window size if ioctl(TIOCGWINSZ) succeeded. (#418)

This avoids potentially using uninitialized data if ioctl fails. Also, zero-initialize the winsize struct to begin with.

Only use console window size if ioctl(TIOCGWINSZ) succeeded. (#418)

This avoids potentially using uninitialized data if ioctl fails. Also, zero-initialize the winsize struct to begin with.

Update doc Jamfile (#414)

Update doc Jamfile (#414)

update changelog

update changelog