HAOS Add-on: s6-overlay Fix

- init: false in config.yaml → s6-overlay deaktiviert, CMD läuft als PID 1
- CMD: python3 /app/main.py direkt (kein run.sh + bashio mehr nötig)
- main.py: liest /data/options.json (HA Add-on Options) statt Env-Vars via bashio

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

haos-addon/src/main.py

@@ -18,6 +18,7 @@ logging.basicConfig(
 log = logging.getLogger(__name__)
 
 CONFIG_PATH = "/data/config.json"
+HA_OPTIONS_PATH = "/data/options.json"
 WEB_DIR = os.path.join(os.path.dirname(__file__), "web")
 
 app = Flask(__name__, static_folder=WEB_DIR)
@@ -35,23 +36,31 @@ class State:
 
 
 def load_config() -> Dict[str, Any]:
+    # Defaults
     cfg: Dict[str, Any] = {
-        "modbus_ip": os.environ.get("MODBUS_IP", "10.10.20.190"),
-        "modbus_port": int(os.environ.get("MODBUS_PORT", "502")),
-        "modbus_address": int(os.environ.get("MODBUS_ADDRESS", "1")),
-        "inverter_model": os.environ.get("INVERTER_MODEL", "MIC_1500_TL_X"),
-        "mqtt_broker": os.environ.get("MQTT_BROKER", "core-mosquitto"),
-        "mqtt_port": int(os.environ.get("MQTT_PORT", "1883")),
-        "mqtt_user": os.environ.get("MQTT_USER", ""),
-        "mqtt_pass": os.environ.get("MQTT_PASS", ""),
-        "mqtt_topic_prefix": os.environ.get("MQTT_TOPIC_PREFIX", "growatt/shinelanx"),
-        "update_interval": int(os.environ.get("UPDATE_INTERVAL", "30")),
+        "modbus_ip": "10.10.20.190",
+        "modbus_port": 502,
+        "modbus_address": 1,
+        "inverter_model": "MIC_1500_TL_X",
+        "mqtt_broker": "core-mosquitto",
+        "mqtt_port": 1883,
+        "mqtt_user": "",
+        "mqtt_pass": "",
+        "mqtt_topic_prefix": "growatt/shinelanx",
+        "update_interval": 30,
     }
+    # HA add-on options (set via UI/config.yaml options)
+    if os.path.exists(HA_OPTIONS_PATH):
+        try:
+            with open(HA_OPTIONS_PATH) as f:
+                cfg.update(json.load(f))
+        except Exception as e:
+            log.warning("HA options konnten nicht gelesen werden: %s", e)
+    # Web UI overrides (gespeichert via /api/config POST)
     if os.path.exists(CONFIG_PATH):
         try:
             with open(CONFIG_PATH) as f:
-                saved = json.load(f)
-                cfg.update(saved)
+                cfg.update(json.load(f))
         except Exception as e:
             log.warning("Config-Datei konnte nicht gelesen werden: %s", e)
     return cfg