feat: synthesize wires for touching-pin connections on component move

When moving a schematic component whose pins directly touch pins of
stationary components (no wire segment, just pin-to-pin contact),
synthesize bridge wires to preserve the electrical connection after
the move. Also fixes duplicate-pin-position collision in old_to_new
map and updates symbol reference assignment to use setAllReferences.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

python/commands/dynamic_symbol_loader.py

@@ -425,6 +425,14 @@ class DynamicSymbolLoader:
     (property "Datasheet" "~" (at {x} {y} 0)
       (effects (font (size 1.27 1.27)) (hide yes))
     )
+    (instances
+      (project "project"
+        (path "/"
+          (reference "{reference}")
+          (unit 1)
+        )
+      )
+    )
   )"""
 
         with open(schematic_path, "r", encoding="utf-8") as f: