Add USB-C, Ethernet, and PoE interface class certifiers (2.61.0).

Dedicated deterministic engines certify class and connection integrity
(CC1/CC2, Rd 5.1 kΩ, VBUS/GND, SuperSpeed if USB3; 10/100 vs GbE
magnetics; PoE only with evidence). Missing evidence is INSUFFICIENT
or N/A, never invented PoE, SuperSpeed, Z, or I. No FEM, no via IPC.

tests/test_si_check.py

@@ -1,6 +1,6 @@
 """G1 SI vs simple_project — no invented millimetres or USBPHY boards.
 
-Favor: real /USB.D+ and /USB.D- pair by suffix; eval stays 3 keys.
+Favor: real /USB.D+ and /USB.D- pair by suffix; eval has no PE-SI keys.
 Against: no .kicad_pcb → no PE-SI-001; 3W is not invented.
 I2C/GPIO/CC are not 50/90 Ω. ImpedenceFinder numbers vs layout_rules only.
 """
@@ -54,7 +54,7 @@ def test_simple_project_without_pcb_has_no_ps_si_001():
 
 def test_simple_project_eval_has_no_si_keys():
     scores = eval_simple_project(SIMPLE)
-    assert scores.finding_count == 3
+    assert scores.finding_count == 10
     assert scores.precision == 1.0
     assert scores.recall == 1.0
     assert not any(