Add dataset card and sprite-sheet metadata

README.md

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+---
+pretty_name: Boogu Pets Sprite Sheets
+tags:
+- sprite-sheet
+- sprite-animation
+- pixel-art
+- image-to-image
+- rgba
+---
+
+# Boogu Pets Sprite Sheets
+
+Private dataset of 3,015 RGBA WebP sprite sheets used for the Boogu image-edit training experiments.
+
+## Contents
+
+- images/: 3,015 source sprite sheets, each 576x624 pixels in RGBA format.
+- dataset-index.json: source index with V1/V2 layouts and train/validation row examples. Its input_dir is normalized to images.
+- row-animation-names.json: names for the animation rows.
+- dataset-info.json: compact dataset statistics.
+
+Each source sheet is divided into 192x208 sprite cells. The index describes the variable-length animation rows and the 3x3 packing used by the training pipeline. The dataset contains 28,231 indexed row examples: 27,691 train and 540 validation.
+
+## Row names
+
+V1 has: idle, run right, run left, wave, jump, failed, waiting, running, review.
+
+V2 contains those nine rows plus: look dirs 1-8 and look dirs 9-16.
+
+## License
+
+No license is asserted here. The uploader is responsible for confirming that the source artwork may be redistributed and used under the intended terms.

dataset-info.json

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+{
+  "image_count": 3015,
+  "format": "WebP",
+  "mode": "RGBA",
+  "image_size": [
+    576,
+    624
+  ],
+  "sprite_size": [
+    192,
+    208
+  ],
+  "sheet_versions": {
+    "v1": 9,
+    "v2": 11
+  },
+  "row_example_count": 28231,
+  "train_row_examples": 27691,
+  "validation_row_examples": 540,
+  "layout": "3x3 canvas packing used by the Boogu edit training pipeline"
+}

row-animation-names.json

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+{
+  "v1": {
+    "1": "idle",
+    "2": "run right",
+    "3": "run left",
+    "4": "wave",
+    "5": "jump",
+    "6": "failed",
+    "7": "waiting",
+    "8": "running",
+    "9": "review"
+  },
+  "v2": {
+    "1": "idle",
+    "2": "run right",
+    "3": "run left",
+    "4": "wave",
+    "5": "jump",
+    "6": "failed",
+    "7": "waiting",
+    "8": "running",
+    "9": "review",
+    "10": "look dirs 1-8",
+    "11": "look dirs 9-16"
+  }
+}