feat: stabilize multi-region runtime sync and worker orchestration

domain-api/tests/test_settings_service.py

@@ -1,6 +1,11 @@
 import unittest
 
-from app.services.settings_service import _normalize_thread_count, resolve_thread_count
+from app.services.settings_service import (
+    _normalize_process_count,
+    _normalize_thread_count,
+    resolve_process_count,
+    resolve_thread_count,
+)
 
 
 class SettingsServiceTests(unittest.TestCase):
@@ -26,6 +31,25 @@ class SettingsServiceTests(unittest.TestCase):
         self.assertEqual(512, resolved["effective_thread_count"])
         self.assertEqual("node_override", resolved["source"])
 
+    def test_normalize_process_count_rejects_non_positive_values(self) -> None:
+        with self.assertRaises(ValueError):
+            _normalize_process_count(0)
+
+    def test_resolve_process_count_uses_large_node_override(self) -> None:
+        payload = {
+            "process_count": 80,
+            "node_process_counts": {
+                "mainland-controller-01": 96,
+            },
+        }
+
+        resolved = resolve_process_count(node_code="mainland-controller-01", settings_payload=payload)
+
+        self.assertEqual(80, resolved["default_process_count"])
+        self.assertEqual(96, resolved["override_process_count"])
+        self.assertEqual(96, resolved["effective_process_count"])
+        self.assertEqual("node_override", resolved["source"])
+
 
 if __name__ == "__main__":
     unittest.main()