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_review.py

@@ -515,9 +515,44 @@ def test_power_trace_skips_without_i_load():
     graph.components["U1"].specs.values["i_load_a"] = None  # type: ignore[union-attr]
     graph.components["U1"].specs = None
     findings = check_pcb_power_traces(graph, cmap, layout)
+    assert findings == []
+
+
+def test_power_trace_skips_iout_max_as_load():
+    from backend.periscopex.pcb_power_thermal import check_pcb_power_traces
+
+    graph, cmap, layout = _ldo_graph_layout(i_load=10)
+    graph.components["U1"].specs.values.clear()  # type: ignore[union-attr]
+    graph.components["U1"].specs.values["iout_max_a"] = 10.0  # type: ignore[union-attr]
+    graph.components["U1"].specs.values["tj_max"] = 150.0  # type: ignore[union-attr]
+    findings = check_pcb_power_traces(graph, cmap, layout)
+    assert findings == []
+
+
+def test_power_trace_uses_imax_when_i_load_absent():
+    from backend.periscopex.pcb_power_thermal import check_pcb_power_traces
+
+    graph, cmap, layout = _ldo_graph_layout(i_load=10)
+    vals = graph.components["U1"].specs.values  # type: ignore[union-attr]
+    vals.pop("i_load_a", None)
+    vals["i_max"] = 10.0
+    findings = check_pcb_power_traces(graph, cmap, layout)
     assert findings
     assert findings[0].rule_id == "PE-PWR-001"
-    assert findings[0].evidence_status == "INSUFFICIENT"
+    assert findings[0].status == "ERROR"
+
+
+def test_power_trace_uses_i_abs_when_i_load_absent():
+    from backend.periscopex.pcb_power_thermal import check_pcb_power_traces
+
+    graph, cmap, layout = _ldo_graph_layout(i_load=10)
+    vals = graph.components["U1"].specs.values  # type: ignore[union-attr]
+    vals.pop("i_load_a", None)
+    vals["i_abs"] = 10.0
+    findings = check_pcb_power_traces(graph, cmap, layout)
+    assert findings
+    assert findings[0].rule_id == "PE-PWR-001"
+    assert findings[0].status == "ERROR"
 
 
 def test_kelvin_sense_pin_on_shared_net():