Release v3.0.0

- Bump version to 3.0.0 and update docs

- Fix Debian payload to include TUI and install /usr/bin/sensorpajen-tui wrapper

- Make systemd unit upgrades safer and ignore deb build artifacts

tests/test_config.py

@@ -34,6 +34,35 @@ def test_sensor_config_load(tmp_path):
     assert sensor_cfg.get_name("AA:BB:CC:DD:EE:FF") == "Living Room"
     assert sensor_cfg.get_name("UNKNOWN") == "UNKNOWN"
 
+
+def test_sensor_config_comment_load_and_clear(tmp_path):
+    import json
+    import sensorpajen.config as config
+
+    config_file = tmp_path / "sensors.json"
+    config_file.write_text(
+        json.dumps(
+            {
+                "sensors": [
+                    {"mac": "AA:BB:CC:DD:EE:FF", "name": "Living Room", "comment": "hello"},
+                ]
+            },
+            indent=2,
+        )
+    )
+
+    sensor_cfg = config.SensorConfig(config_file=str(config_file))
+    assert sensor_cfg.get_comment("AA:BB:CC:DD:EE:FF") == "hello"
+
+    # Clear comment explicitly (empty string means remove comment key)
+    sensor_cfg.add_sensor("AA:BB:CC:DD:EE:FF", "Living Room", "")
+    assert sensor_cfg.get_comment("AA:BB:CC:DD:EE:FF") is None
+
+    saved = json.loads(config_file.read_text())
+    assert saved["sensors"][0]["mac"] == "AA:BB:CC:DD:EE:FF"
+    assert saved["sensors"][0]["name"] == "Living Room"
+    assert "comment" not in saved["sensors"][0]
+
 def test_sensor_config_add_remove(tmp_path):
     import sensorpajen.config as config
     config_file = tmp_path / "sensors.json"
@@ -47,10 +76,12 @@ def test_sensor_config_add_remove(tmp_path):
     # Add
     sensor_cfg.add_sensor("AA:BB:CC:DD:EE:FF", "Living Room", "Test comment")
     assert sensor_cfg.sensors["AA:BB:CC:DD:EE:FF"] == "Living Room"
+    assert sensor_cfg.get_comment("AA:BB:CC:DD:EE:FF") == "Test comment"
     
     # Verify persistence
     sensor_cfg2 = config.SensorConfig(config_file=str(config_file))
     assert sensor_cfg2.sensors["AA:BB:CC:DD:EE:FF"] == "Living Room"
+    assert sensor_cfg2.get_comment("AA:BB:CC:DD:EE:FF") == "Test comment"
     
     # Remove
     sensor_cfg.remove_sensor("AA:BB:CC:DD:EE:FF")