Fix PCB software false positives (2.60.11).

KiCad 9/10 name-only nets fill the index. PE-LAY-004 counts tracks, vias,
and pours and skips NC nets. Missing I_load is INSUFFICIENT. EP pads are
not PE-BOM-011; abs-max binds the named pin. Kelvin/EMI/PI ignore NC and
IN±. LQW decodes nH; BLM/FB is a bead, not DCR as Z.

tests/test_pcb_via_not_pad.py

@@ -209,9 +209,9 @@ def test_true_mismatch_24_vs_25_still_fires(tmp_path: Path):
     ids, layout = _bom_ids(
         tmp_path,
         n_pads=24,
-        extra_smd=[(25, 1.8, 1.8, "SIG")],
+        extra_smd=[(30, 1.8, 1.8, "SIG")],
     )
-    assert len(layout.footprints["U1"].pads) == 25
+    assert len(layout.footprints["U1"].pads) == 25  # 24 signal + extra 30
     assert "PE-BOM-011" in ids
 
 
@@ -230,7 +230,7 @@ def test_vias_do_not_hide_true_mismatch(tmp_path: Path):
     ids25, layout25 = _bom_ids(
         tmp2,
         n_pads=24,
-        extra_smd=[(25, 1.8, 1.8, "SIG")],
+        extra_smd=[(30, 1.8, 1.8, "SIG")],
         stitch_via_pads=stitches,
         board_vias=board,
     )