(docs) list of agrf_* options for manifest

Author: ahyangyi

doc/manifest_json.md

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+# AGRF Manifest Options
+
+Below are extra options you can put in a `gorender` `manifest.md` that will be instead consumed by AGRF, controlling various aspects of rendering behavior.
+
+The current list is AI-generated summary, which is still better than nothing since one sometimes just needs such a list. I will update this list when I have time.
+
+## Sprite Configuration
+
+### `agrf_subset`
+- **Type**: Array or special value
+- **Description**: Controls which sprites/indices to use from the spritesheet
+
+### `agrf_unnaturalness`
+- **Type**: Number
+- **Description**: Controls sprite dimension adjustments for non-standard sizes
+
+### `agrf_scale`
+- **Type**: Number
+- **Description**: Scale factor applied to sprites
+
+### `agrf_scales`
+- **Type**: Array of Numbers
+- **Description**: List of scale values for sprites
+
+### `agrf_zdiff`
+- **Type**: Number
+- **Description**: Z-axis offset for sprite positioning
+
+### `agrf_real_x`
+- **Type**: Number
+- **Description**: Real X dimension (used in road mode calculations)
+
+## Rendering Modes
+
+### `agrf_road_mode`
+- **Type**: Boolean
+- **Description**: Enable road-specific rendering mode
+- **Example**: `"agrf_road_mode": true`
+
+### `agrf_cargo_mode`
+- **Type**: Boolean
+- **Description**: Enable cargo-specific rendering mode
+- **Example**: `"agrf_cargo_mode": true`
+
+## Palette Configuration
+
+### `agrf_palette`
+- **Type**: String
+- **Description**: Path to palette file for rendering
+- **Example**: `"agrf_palette": "path/to/palette.pal"`
+
+## Sprite Positioning and Offsets
+
+### `agrf_deltas`
+- **Type**: Array
+- **Description**: Delta values for spritesheet positioning
+
+### `agrf_ydeltas`
+- **Type**: Array
+- **Description**: Y-delta values for spritesheet positioning
+
+### `agrf_offsets`
+- **Type**: Array
+- **Description**: Offset values for spritesheet positioning
+
+### `agrf_yoffsets`
+- **Type**: Array
+- **Description**: Y-offset values for spritesheet positioning
+
+### `agrf_bpps`
+- **Type**: Array
+- **Description**: Bits per pixel values for sprites
+
+### `agrf_bbox_joggle`
+- **Type**: Number or Array
+- **Description**: Bounding box adjustment
+
+## Child Sprite Configuration
+
+### `agrf_childsprite`
+- **Type**: Array or Object
+- **Description**: Child sprite configuration for complex objects
+
+### `agrf_relative_childsprite`
+- **Type**: Boolean
+- **Description**: Use relative positioning for child sprites
+- **Example**: `"agrf_relative_childsprite": true`
+
+## Cropping Configuration
+
+### `agrf_manual_crop`
+- **Type**: Boolean
+- **Description**: Enable manual cropping mode
+- **Example**: `"agrf_manual_crop": true`
+
+### `agrf_manual_crop_keep_br_space`
+- **Type**: Boolean
+- **Description**: Keep bottom-right space when manually cropping
+- **Example**: `"agrf_manual_crop_keep_br_space": true`
+
+## Mask Configuration
+
+### `agrf_no_mask`
+- **Type**: Boolean
+- **Description**: Disable masking for sprites
+- **Example**: `"agrf_no_mask": true`