Link View: order the peers so the wires stop crossing

The picture was right and unreadable: eleven links round one component
drew twelve wire crossings, because each column was stacked in the order
the file happens to list its links and the lanes were handed out by how
far a wire had to travel.

Both columns are now stacked in the order of the chosen component's own
slots -- what feeds its first slot at the top, what feeds its fifth below
that. Nothing here is read from meta, so the view was always free to put
the peers where they read best, and this is the order that turns the set
of wires on one side into a ladder: both ends run the same way down the
page, so no wire has any reason to cross another.

That leaves which lane each wire turns in. For a ladder there is an order
that cannot produce a crossing, and read off the slots rather than off the
direction the line is drawn in, it is the same on both sides -- two fans,
each nesting outwards from the component's own row:

    reaching a peer slot above its focus slot -> turns nearer the focus
    the higher up the focus it lands

    reaching a peer slot below its focus slot -> turns nearer the focus
    the lower down the focus it lands

Two wires of one fan, the outer going round the inner, pass above and
below its vertical but never through it; and a wire of one fan can never
share a stretch of the page with a wire of the other, so the two fans
reuse each other's lanes and the gap stays as narrow as the picture
allows. Where several wires leave the same slot no order of focus heights
separates them, so the longest branch turns first and the rest carry on
along the shared run beside the pin -- a wiresheet's own fan-out. Where
two slots already line up the wire is one straight line and is settled
before anything has to be fitted past it; the layout is rounded to whole
pixels so that a pair that ought to line up does.

The reasoning is not trusted on its own: every wire is checked against the
ones already routed (routes_meet) and takes the next lane out if it
clashes. One thing genuinely breaks the ladder -- a peer whose own slots
run counter to the focus's, linking its row 4 to row 3 and its row 3 to
row 4. Ends inverted like that have to cross wherever they are drawn,
since neither box's slot order is this view's to change.

Measured over 461 linked components in four real files, 1113 wires: no
wire passes through a box at all, and ten crossings remain in six
components, every one of them an inverted pair of that kind. Before this
the same four files drew 45.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app_state.py

@@ -8,7 +8,7 @@ so later rebinding would only ever be seen by the module that did it.
 import configparser
 import os
 
-VERSION = "0.0.0.055"
+VERSION = "0.0.0.056"
 PROPERTIES_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "editor.properties")
 DEFAULT_GRID_SIZE = 10
 DEFAULT_ADD_TIMESTAMP = True