Count thermal vias in the courtyard against min_via_count.

Skip without courtyard geometry or a numeric count — no pad-radius default. Tests use simple_project plus explicit coordinates as parameters.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_placement_check.py

@@ -1,7 +1,8 @@
-"""G2 placement vs simple_project — no invented 15 mm / 2 mm boards.
+"""G2 placement vs simple_project — no invented millimetre boards.
 
 Favor: real U1 + caps on +3V3 exist; eval stays 3 keys.
-Against: no .kicad_pcb → no PS-PLC-001; no 3 mm default.
+Against: no .kicad_pcb → no PS-PLC-001 / PS-PLC-002; no 3 mm default;
+thermal vias skip without courtyard geometry.
 """
 
 from __future__ import annotations
@@ -10,7 +11,7 @@ from pathlib import Path
 
 from backend.pinscopex.eval_report import eval_simple_project
 from backend.pinscopex.models import DesignGraph
-from backend.pinscopex.placement_check import check_placement
+from backend.pinscopex.placement_check import _in_poly, check_placement
 
 SIMPLE = Path(__file__).resolve().parents[1] / "simple_project"
 
@@ -29,10 +30,10 @@ def test_simple_project_has_ldo_and_3v3_caps():
     assert caps, "simple_project must keep decoupling caps on +3V3"
 
 
-def test_simple_project_without_pcb_has_no_ps_plc_001():
+def test_simple_project_without_pcb_has_no_ps_plc():
     findings = check_placement(_graph(), {}, None)
     assert findings == []
-    assert all(f.rule_id != "PS-PLC-001" for f in findings)
+    assert all(not (f.rule_id or "").startswith("PS-PLC-") for f in findings)
 
 
 def test_simple_project_eval_has_no_placement_keys():
@@ -41,3 +42,14 @@ def test_simple_project_eval_has_no_placement_keys():
     assert scores.precision == 1.0
     assert scores.recall == 1.0
     assert not any(k.startswith("PS-PLC-") for k in scores.extra_keys)
+
+
+def test_via_count_is_calculated_from_courtyard_and_min_parameter():
+    courtyard = [(0.0, 0.0), (1.0, 0.0), (1.0, 1.0), (0.0, 1.0)]
+    via_xy = [(0.5, 0.5), (10.0, 10.0)]
+    inside = sum(1 for x, y in via_xy if _in_poly(x, y, courtyard))
+    min_via_count = 2
+    assert inside == 1
+    assert inside < min_via_count
+    assert _in_poly(0.5, 0.5, courtyard) is True
+    assert _in_poly(10.0, 10.0, courtyard) is False