A line and a circle or arc can now be dimensioned to the circle's edge
(ConstraintKind::LineCircleDistance, saved as line_circle_distance): the gap
while the line misses the circle (0 is tangency), or how far the edge reaches
past the line when it cuts through (stored as `inside`).
Rebased onto main as one commit (the branch's own changes; its merges of main
dropped). Conflicts resolved: the test mod lines in cmd/sketch.rs (both kept,
sorted), and README.md, whose feature list main moved to docs/capabilities.md;
the line-to-circle dimension is listed there now.
Claude-Session: https://claude.ai/code/session_01QWhMwdqJYQKQq8RCLSL1LT
Co-authored-by: jyviko <jyviko@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
leValdemar19