server: make state-save debounce timing configurable

server/tests/test_config.py

@@ -10,6 +10,8 @@ def test_load_config_defaults_when_path_none() -> None:
     assert cfg.server.bind_ip == "127.0.0.1"
     assert cfg.network.allow_insecure_ws is True
     assert cfg.storage.state_file == "runtime/items.json"
+    assert cfg.storage.state_save_debounce_ms == 200
+    assert cfg.storage.state_save_max_delay_ms == 1000
     assert cfg.world.grid_size == 41
 
 
@@ -23,3 +25,18 @@ allow_insecure_ws = false
     )
     with pytest.raises(ValueError):
         load_config(config_path)
+
+
+def test_load_config_reads_state_save_timing(tmp_path: Path) -> None:
+    config_path = tmp_path / "config.toml"
+    config_path.write_text(
+        """
+[storage]
+state_file = "runtime/items.json"
+state_save_debounce_ms = 150
+state_save_max_delay_ms = 900
+""".strip()
+    )
+    cfg = load_config(config_path)
+    assert cfg.storage.state_save_debounce_ms == 150
+    assert cfg.storage.state_save_max_delay_ms == 900