models.json

Node JSON Structure:
    {
        "id": "unique-id",
        "type": "start|process|decision|input_output|end",
        "text": "Node Label",
        "x": 100,
        "y": 200,
        "width": 120,
        "height": 80,
        "properties": {
            // Additional type-specific properties
        }
    }

Connection JSON Structure:
{
    "id": "unique-id",
    "source": "source-node-id",
    "target": "target-node-id",
    "label": "Optional connection label",
    "points": [
        {"x": 100, "y": 200},
        {"x": 150, "y": 250}
    ],
    "type": "default|success|failure"  // For decision paths
}

Complete Flowchart JSON Structure:
{
    "id": "flowchart-unique-id",
    "title": "My Flowchart",
    "nodes": [
        // Array of Node objects
    ],
    "connections": [
        // Array of Connection objects
    ],
    "metadata": {
        "created": "2025-04-22T10:30:00Z",
        "modified": "2025-04-22T15:45:00Z",
        "version": "1.0",
        "author": "User Name",
        "tags": ["process", "workflow"]
    }
}