# Data dictionary

Compatibility schemas are taken from the captured official JSONs: text SHA `8fd30206e8571d6a27e62f216a6c9d0e2201170623123b261360bfb088a460fe`, table SHA `55ab7be293c6622522750a063d556efd8677dec98aa171272c6ef5e52dac585f`. The original table file is heterogeneous; optional fields occur on only some original records. Preserve original values. Unknown generated human ratings, annotation identities and annotation timing are `null`, never synthesized.

## Main JSON fields

|Field|Type|Meaning|
|---|---|---|
|`id`|integer|Persistent numeric ID; never renumber previously allocated IDs or recycle holes|
|`image_input`|string|Package-relative source image path|
|`image_output`|string|Package-relative edited target image path; output names must be unique|
|`instruction`|string|Frozen edit instruction, unchanged by packaging|
|`data_source`|string or retained original value|Source document category; not a license or generator identity|
|`label_output`|list of rectangle objects|Edited evaluation regions in an annotation canvas; see provenance for annotation method|
|`instruction type`|string; text JSON|`text replace`, `text addition` or `text deletion`|
|`language`|string; text JSON|Original/recorded language value; generated Chinese is normalized to `simplified_chinese`|
|`edit_type`|string; table JSON|`text modify`, `text addition`, `text deletion` or `table structure edit`|
|`lang`|string or null; table JSON|Original/recorded language value; some original records lack it|
|`label_input`|list or null; table JSON|Original input annotation or documented automatically derived source-coordinate region|
|`data_id`, `annotator`, `annotation_id`|original type or null; table JSON|Historical annotation identifiers; no invented generated identities|
|`score_instruction`, `score_realism`, `score_satisfaction`, `score_background`|original type or null; table JSON|Historical ratings; generated examples have no fabricated ratings|
|`created_at`, `updated_at`, `lead_time`|original type or null; table JSON|Historical annotation timing, not inferred generation time|

The text JSON has eight fields. The table schema is the union of the19 field names listed above. Formatting compatibility does not mean unavailable original optional values were reconstructed.

## Rectangle object and mask sidecars

`x`, `y`, `width`, `height` are percentages of `original_width`/`original_height`. `rotation` is0 for the exported generated rectangles. `rectanglelabels` retains the official compatible label list. Pixel boxes in sidecars use `[x0,y0,x1,y1]`, origin at top-left, with exclusive right/bottom endpoints. Percentage conversion can produce a one-pixel integer truncation difference in the official image reader; preserve the float canvas mapping.

Keep these distinct: `planned_target_bbox_xyxy` is the pre-generation plan; `allowed_mask`/`approved_roi_rectangles_xyxy` describe allowed restoration regions; `actual_difference_mask` and `actual_edit_bbox_xyxy` describe current source-versus-output pixel changes. Generated main annotations follow the existing allowed-ROI enclosing-rectangle export convention; actual changed-pixel boxes/masks remain sidecars. Do not redefine the main annotation of an existing ID during this packaging step. Old942/600 annotation semantics remain historical and must not silently be relabeled as exact current-difference boxes. Where native rasters differ from annotation canvas, retain both dimensions; do not silently assume identical frames.

## Provenance sidecars

Per-record evidence should bind `id`, original stable task ID, stratum/route, source document group, source dataset/category, public source citation, license text/reference and its evidence status, actual generation model/version when available, immutable instruction/input/output SHA256, annotation origin/canvas, current review SHA, postprocess method and masks, and validation scope. Generated `human_verified` remains false. `null` means unknown/not available, not zero or failure. Source paper license and dataset license must be stored separately.

Generation metadata for successful attempts must refer to the selected output SHA; transport archive versions are not successful HTTP200 counts. Preserve failed/unused versions as evidence outside the selected3506 main entries. Public sidecars must remove credentials, request authentication, internal service URLs and machine-specific absolute paths; use package-relative references and public citations. Public source URLs are not a substitute for license evidence.

## Publication metadata sanitization
For this release, data_id, annotator, annotation_id, created_at, updated_at and lead_time are null. Public source citations and document content are preserved. Output filenames use numeric IDs. Image bytes can change after metadata removal, but decoded pixels, dimensions, instructions and annotation coordinates are identical. Current image hashes are recorded separately from upstream hashes.