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Load a branching config

Upload JSON or select a bundled fixture. Valid files replace the current deck.

Upload config JSON

Built-in fixtures

Expected schema

{ "app": { "title": "…", "startCard": "start" }, "cards": [{ "id": "start", "heading": "…", "text": "…", "visual": { "label": "…", "symbol": "compass" }, "left": { "label": "…", "target": "a" }, "right": null }] }