fix: stabilize test suite by ensuring proper test DB isolation and initialization

tests/test_ini_spaces.py

@@ -0,0 +1,27 @@
+from decnet.ini_loader import load_ini_from_string
+
+def test_load_ini_with_spaces_around_equals():
+    content = """
+[general]
+interface = eth0
+
+[omega-decky]
+services = http, ssh
+"""
+    cfg = load_ini_from_string(content)
+    assert cfg.interface == "eth0"
+    assert len(cfg.deckies) == 1
+    assert cfg.deckies[0].name == "omega-decky"
+    assert cfg.deckies[0].services == ["http", "ssh"]
+
+def test_load_ini_with_tabs_and_spaces():
+    content = """
+[general]
+interface	=	eth0
+
+[omega-decky]
+services	=	http, ssh
+"""
+    cfg = load_ini_from_string(content)
+    assert cfg.interface == "eth0"
+    assert cfg.deckies[0].services == ["http", "ssh"]