feat: Update status column default value in Instances table

The default value of the `status` column in the `Instances` table has been changed from "up" to "loading". This update ensures that new instances are marked as "loading" by default until their health status is determined.

src/common/db/Database.py

@@ -3111,6 +3111,7 @@ def update_instances(self, instances: List[Dict[str, Any]], method: str, changed
                         hostname=instance["hostname"],
                         port=instance["env"].get("API_HTTP_PORT", 5000),
                         server_name=instance["env"].get("API_SERVER_NAME", "bwapi"),
+                        status="up" if instance.get("health", True) else "down",
                         method=method,
                     )
                 )

src/common/db/model.py

@@ -202,7 +202,7 @@ class Instances(Base):
     hostname = Column(String(256), primary_key=True)
     port = Column(Integer, nullable=False)
     server_name = Column(String(256), nullable=False)
-    status = Column(INSTANCE_STATUS_ENUM, nullable=True, default="up")
+    status = Column(INSTANCE_STATUS_ENUM, nullable=True, default="loading")
     method = Column(METHODS_ENUM, nullable=False, default="manual")
     creation_date = Column(DateTime, nullable=False, server_default=func.now())
     last_seen = Column(DateTime, nullable=True, server_default=func.now(), onupdate=partial(datetime.now, timezone.utc))