fix: address M3 verifier findings on soak invariants and probe tests

tests/unit/test_soak_scoreboard.py

@@ -52,3 +52,22 @@ class TestErrorsClassified:
         rows = [_row(error="KeyError: 'oops'")]
         with pytest.raises(AssertionError, match="未分类"):
             inv_errors_classified(rows, _KNOWN)
+
+
+class TestRssAbsolute:
+    def test_within_bound(self):
+        from tools.soak.scoreboard import inv_rss_absolute
+
+        inv_rss_absolute([120.0, 180.0, 150.0], max_mb=500.0)
+
+    def test_peak_exceeds(self):
+        from tools.soak.scoreboard import inv_rss_absolute
+
+        with pytest.raises(AssertionError, match="峰值"):
+            inv_rss_absolute([120.0, 690.0, 200.0], max_mb=500.0)  # verifier I1 实测形态
+
+    def test_empty_rejected(self):
+        from tools.soak.scoreboard import inv_rss_absolute
+
+        with pytest.raises(AssertionError):
+            inv_rss_absolute([], max_mb=500.0)