# Current project handoff profile

This is a documented subset of the existing Mindhall v3 project file, not a new engine or schema migration. Start with the supplied project; preserve unedited fields.

| Field | Meaning |
| --- | --- |
| `project.title` | Whole work name |
| `project.language` | `zh-CN` or `en`; select the same language in the editor |
| `scenes[0].title` | Displayed exhibition name |
| `scenes[0].layoutKey` | `square`, `corridor`, `round` |
| `scenes[0].themeKey` | `gallery`, `memory`, `study`, `birthday` |
| `scenes[0].settings.roundSingleSided` | Must be `true` for this profile's round gallery |
| `scenes[0].settings.hallSubtitle` | Introduction text |
| `scenes[0].settings.hallIntroSchema` | For a plain introduction use `INTRO_LEAD: your introduction` and update it together with `hallSubtitle`. Do not leave it empty: older editor defaults can introduce unrelated demonstration counts. Preserve genuine existing `FIELD_` lines only when relevant and verified. |
| `scenes[0].elements[].id` | Stable ID; preserve for an existing exhibit |
| `elements[].title` | Exhibit name |
| `elements[].year` | Short optional date or caption; do not invent one |
| `elements[].desc` | Main description |
| `elements[].why` | Optional additional context; may be empty |
| `elements[].img` | Embedded raster image data URL, not a filename |

Images are assigned to existing exhibit positions by array order. This workflow does not implement arbitrary object positioning. One scene and up to eight images keeps the handoff inside the verified basic layouts. Project files can store more than one scene, but this profile does not promise a multi-room navigation UI.

To modify only an explanation: locate the exhibit by its ID, change `desc`, keep all other values. To reorder: reorder entire element objects, not just titles. To replace a photo: preserve its ID and other text unless the user requested otherwise.

The editor stores drafts in the current browser. Exporting `.hall.json` keeps a project editable; exporting a web ZIP creates a separate viewer. Hosting that viewer and obtaining a public link is a separate action. Export support does not include the sea or bead workbench.

The included three images are existing Mindhall generated landscape assets, used to test the handoff. Replace them with approved material before treating the work as the user's own exhibition.