feat: add MQTT topic parsing and pipeline config

backend/app/core/config.py

@@ -56,6 +56,17 @@ class Settings(BaseSettings):
     POSTGRES_PASSWORD: str = ""
     POSTGRES_DB: str = ""
 
+    MQTT_HOST: str = "101.35.119.226"
+    MQTT_PORT: int = 1883
+    MQTT_USERNAME: str = ""
+    MQTT_PASSWORD: str = ""
+    MQTT_TOPIC_PATTERN: str = "terminal/+/raw"
+    MQTT_CLIENT_ID: str = "spatialhub-mqtt-ingestor"
+    RAW_HOT_RETENTION_DAYS: int = 90
+    RAW_ARCHIVE_BASE_DIR: str = "/data/archive/gnss"
+    PARSER_BATCH_SIZE: int = 200
+    PARSER_POLL_INTERVAL_MS: int = 300
+
     @computed_field  # type: ignore[prop-decorator]
     @property
     def SQLALCHEMY_DATABASE_URI(self) -> PostgresDsn: