{
    "summary": [
        {
            "name": "sessions",
            "title": "Active Sessions",
            "primary": "id",
            "catelog": "entity"
        }
    ],
    "fields": [
        {
            "name": "id",
            "title": "Session ID",
            "type": "str",
            "length": 32,
            "nullable": "no",
            "comments": "Primary key - UUID format"
        },
        {
            "name": "session_id",
            "title": "Session ID (External)",
            "type": "str",
            "length": 64,
            "nullable": "no",
            "comments": "External session identifier from Hermes service"
        },
        {
            "name": "session_name",
            "title": "Session Name",
            "type": "str",
            "length": 255,
            "nullable": "yes",
            "comments": "User-friendly session name"
        },
        {
            "name": "service_id",
            "title": "Service ID",
            "type": "str",
            "length": 32,
            "nullable": "no",
            "comments": "Reference to hermes_services table"
        },
        {
            "name": "service_name",
            "title": "Service Name",
            "type": "str",
            "length": 255,
            "nullable": "no",
            "comments": "Name of the Hermes service"
        },
        {
            "name": "message_count",
            "title": "Message Count",
            "type": "long",
            "nullable": "no",
            "default": "0",
            "comments": "Number of messages in the session"
        },
        {
            "name": "created_at",
            "title": "Created At",
            "type": "timestamp",
            "nullable": "no",
            "comments": "Session creation timestamp"
        },
        {
            "name": "updated_at",
            "title": "Updated At",
            "type": "timestamp",
            "nullable": "no",
            "comments": "Last update timestamp"
        },
        {
            "name": "status",
            "title": "Status",
            "type": "str",
            "length": 32,
            "nullable": "no",
            "default": "active",
            "comments": "Session status: active, inactive, archived"
        },
        {
            "name": "user_id",
            "title": "User ID",
            "type": "str",
            "length": 32,
            "nullable": "yes",
            "comments": "Associated user ID for RBAC"
        }
    ],
    "indexes": [
        {
            "name": "idx_sessions_service_id",
            "idxtype": "index",
            "idxfields": ["service_id"]
        },
        {
            "name": "idx_sessions_status",
            "idxtype": "index",
            "idxfields": ["status"]
        },
        {
            "name": "idx_sessions_user_id",
            "idxtype": "index",
            "idxfields": ["user_id"]
        },
        {
            "name": "idx_sessions_created_at",
            "idxtype": "index",
            "idxfields": ["created_at"]
        }
    ]
}