Enhance CONTRIBUTING.md, README.md, and global_index.json with updated file requirements and status definitions. Added optional fields for notes and status in metadata, clarified accepted file formats, and included details on images for photogrammetry.

CONTRIBUTING.md

@@ -16,12 +16,14 @@ Create a folder named with the **hold ID** (e.g. `0000000002`) at the root of th
 
 Include:
 
-| File           | Description                          | Required |
-|----------------|--------------------------------------|----------|
-| `hold.glb`     | Web-ready 3D model                   | Yes      |
-| `hold.blend`   | Source file for Blender              | Yes      |
-| `texture.png`  | Texture image (PNG or JPG)           | Optional |
-| `metadata.json`| Hold specifications (see below)      | Yes      |
+| File or folder    | Description                                                           |
+|-------------------|----------------------------------------------------------------------|
+| `hold.glb`        | Web-ready 3D model (or `.obj`, `.stl`)                               |
+| `hold.blend`      | Source file for Blender                                              |
+| `texture.png`     | Texture image (PNG, JPG, TGA, BMP, WebP, etc.)                       |
+| `images/`         | Photos used for photogrammetry, reference images (e.g., dimensions)  |
+| `metadata.json`   | Hold specifications (see below)                                      |
+
 
 ### 2. Naming and IDs
 
@@ -33,14 +35,17 @@ Include:
 - Use **Unix timestamps** (seconds) for `created_at` and `last_update`.
 - Set **timezone_offset** (e.g. `"+01:00"`, `"UTC"`) so dates can be interpreted correctly.
 - Fill in as many fields as possible: `type`, `labels`, `color_of_scan`, `available_colors`, `manufacturer`, `model`, `size`, etc.
+- **note** (optional): free-text notes or comments about the hold for contributors.
+- **status** (optional): workflow state — `to_render` (only photos, no mesh yet), `to_clean` (mesh present but not cleaned), `to_identify` (brand/model not in allowed references).
 
 Refer to the example in the [README](README.md#-structure).
 
 ### 4. File formats
 
-- **GLB** — standard for web and SetRsoft; export from Blender with scale and orientation consistent with existing holds.
-- **Blend** — keep the source file so others can edit or re-export.
-- **Texture** — PNG or JPG; avoid unnecessary large resolutions.
+- **3D mesh** — GLB, GLTF, OBJ, or STL; at least one required for a complete hold. GLB is standard for web and SetRsoft; export from Blender with scale and orientation consistent with existing holds.
+- **Blend** — keep the source file so others can edit or re-export (optional).
+- **Texture** — PNG, JPG, JPEG, TGA, BMP, WebP; avoid unnecessarily large resolutions.
+- **images/** — place photos used for generation and reference images (e.g. dimensions) in this subfolder; any common image format.
 
 ## Submitting changes
 

README.md

@@ -33,16 +33,26 @@ The dataset follows a strict directory-based structure to ensure portability and
 ```text
 data/
 ├── [hold_id]/
-├──── hold.glb # Web-ready 3D model
-├──── hold.blend # Source file for editing in Blender
-├──── texture.png
-└──── metadata.json # Hold specifications (brand, model, size, etc.)
+├──── hold.glb          # Web-ready 3D model (or .obj, .stl)
+├──── hold.blend        # Source file for editing in Blender (optional)
+├──── texture.png       # Texture (PNG, JPG, etc.)
+├──── images/           # Optional: photos for generation, reference images (e.g. dimensions)
+├────   └── *.png, *.jpg, ...
+└──── metadata.json     # Hold specifications (brand, model, size, status, note, etc.)
 ```
 
+**Accepted file formats in each hold directory:**
+
+- **3D mesh:** `.glb`, `.gltf`, `.obj`, `.stl` (at least one required for a complete hold).
+- **Textures:** `.png`, `.jpg`, `.jpeg`, `.tga`, `.bmp`, `.webp` (optional).
+- **images/** subfolder: photos used for generation and reference images (e.g. dimensions); any common image format.
+
 Example of metadata.json :
 
 Use **timestamps** (Unix epoch in seconds) for `created_at` and `last_update`, please specify the **timezone offset** `timezone_offset`).
 
+Optional fields: **note** (contributor notes or text about the hold), **status** (workflow state: `to_render`, `to_clean`, or `to_identify`).
+
 ```json
 {
   "id": 1,
@@ -56,10 +66,14 @@ Use **timestamps** (Unix epoch in seconds) for `created_at` and `last_update`, p
   "available_colors": ["#FF3200"],
   "manufacturer": "trikit",
   "model": "unknown",
-  "size": "XL"
+  "size": "XL",
+  "note": "Optional notes about this hold.",
+  "status": "to_clean"
 }
 ```
 
+**Status values:** `to_render` (only photos, no mesh yet), `to_clean` (GLB/Blend present but hold not cleaned), `to_identify` (brand or model not in allowed references).
+
 # ⚖️ License & Intellectual Property
 Dataset License: CC-BY-SA-4.0.
 

global_index.json

@@ -14,6 +14,11 @@
       "pinch",
       "volume",
       "unknown"
+    ],
+    "status": [
+      "to_render",
+      "to_clean",
+      "to_identify"
     ]
   },
   "stats": {
@@ -24,6 +29,7 @@
     "invalid_hold_type_reference": [],
     "invalid_manufacturer_reference": [],
     "invalid_metadata": [],
+    "invalid_status_reference": [],
     "missing_mesh": [],
     "unknown_hold_type": [
       "0000000003",