Treat KiCad /net vs schematic net as one hierarchy finding.

Pad-net compare strips leading slash and nested sheet path so /ESP32_EN
matches ESP32_EN. If every mismatch is only that prefix, emit PE-LAY-003
once instead of per-pad reconnect errors.

backend/periscopex/placement_pack.py

@@ -14,6 +14,7 @@ from pydantic import BaseModel
 
 from backend.periscopex.functional_groups import FunctionalGroupsReport, PlacementIcGroup
 from backend.periscopex.models import DesignGraph, LayoutGraph, LayoutPad
+from backend.periscopex.pcb_net_match import kicad_nets_match
 
 SkipReason = Literal[
     "no_pcb_footprints",
@@ -179,7 +180,7 @@ def _anchor_pad(
                                 return pad
                         # No matching pad number — pick any pad on that net.
                         for pad in fp.pads:
-                            if pad.net and pad.net == net:
+                            if pad.net and kicad_nets_match(pad.net, net):
                                 return pad
     # Prefer a pad on a power-looking net shared with decoupling sats.
     for pad in fp.pads: