Skip PE-PWR/PE-VIA without datasheet current (2.61.1).

Trace-width vs current runs only with I_load/Imax/I_abs. Missing I is a
skip, not INFO INSUFFICIENT, not USB 500 mA, not Iout_max-as-load.

tests/test_pcb_software_bugs.py

@@ -307,7 +307,7 @@ def test_fb1_blm_is_bead_not_dcr_resistor():
     assert getattr(dcr.specs, "value_ohms", None) is None
 
 
-def test_via_current_insufficient_without_i_load():
+def test_via_current_skips_without_i_load():
     from backend.periscopex.models import LayoutStackup
 
     cons = ComponentConstraints(
@@ -339,11 +339,9 @@ def test_via_current_insufficient_without_i_load():
         ],
     )
     findings = check_pcb_via_current(graph, {"LDO1": cons}, layout)
-    assert findings and findings[0].rule_id == "PE-VIA-001"
-    assert findings[0].evidence_status == "INSUFFICIENT"
+    assert findings == []
     pwr = check_pcb_power_traces(graph, {"LDO1": cons}, layout)
-    assert pwr and pwr[0].rule_id == "PE-PWR-001"
-    assert pwr[0].evidence_status == "INSUFFICIENT"
+    assert pwr == []
 
 
 def test_thinking_reasoning_content_echo_still_present():