feat: Add wire.breakout element for bus fan-out diagrams

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Introduces wire.breakout: a 45° diagonal line of configurable length
(default 1em) that starts at a given (x, y) and exposes a port anchor
<id>-port-<id> at its end point so wires can attach to it as if it were
a block port. A synthesized <id>.center anchor is placed opposite the
configured port-side so wire.wire with style "u-shape" can auto-detect
the port's cardinal side.
- x/y accept number, (rel:, to:) and (from:) forms; (from:) sets the
  start point to the referenced anchor's coordinate.
- direction: one of north-east/north-west/south-east/south-west.
- Optional label positioned via name-pos (NE/NW/SE/SW); when name-pos is
  opposite to direction, the label falls back to the start point so it
  never covers the diagonal line. Label padding matches wire.wire (3pt).
Also adds three examples (breakout, breakout-label, breakout-wire) in
doc/examples.typ referenced from the docstring so tidy auto-renders
them in the manual, and a gallery entry (gallery/test_breakout.typ)
demonstrating orthogonal bus fan-out with breakouts in all four
directions.

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David Stadelmann committed 2026-08-26 09:45:24 +02:00

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commit 6070ce7fe3

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