Add HueForge 3D Fuel filament library integration

- Added HueForge folder with 3D Fuel filament library (127 filaments)
- Created 3d-fuel.json with complete filament specifications
- Added comprehensive README with installation instructions
- Updated wiki submodules with latest changes
- Provides accurate color/transmissivity data for HueForge projects

HueForge/README.md

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+# HueForge 3D Fuel Filament Library
+
+This folder contains the official 3D Fuel filament library for HueForge, providing accurate color and transmissivity data for 127+ 3D Fuel filaments.
+
+## What's Included
+
+- **3d-fuel.json** - Complete filament library with:
+  - 127 filament entries from 3D Fuel and 3D Fuel Tough lines
+  - Accurate hex color codes
+  - Transmissivity values for realistic light simulation
+  - Both PLA+ and PCTG material types
+  - Unique UUIDs for proper filament identification
+
+## Steps for Adding to Your HueForge
+
+1. **Download the File**
+   - Download the `3d-fuel.json` file from this folder
+
+2. **Locate Your HueForge Installation**
+   - Navigate to your HueForge application folder
+   - Find the `Filaments` subfolder
+
+3. **Navigate to Vendor Libraries**
+   - Inside the `Filaments` folder, locate the `Vendor Libraries` subfolder
+   - If it doesn't exist, create it
+
+4. **Install the Library**
+   - Copy the `3d-fuel.json` file into the `Vendor Libraries` folder
+   - The complete path should look like:
+
+     ```text
+     [HueForge Install]/Filaments/Vendor Libraries/3d-fuel.json
+     ```
+
+5. **Restart HueForge**
+   - Close and reopen HueForge
+   - The 3D Fuel brand should now appear in your filament selection
+
+## Using the Filaments
+
+Once installed, you'll see "3D-Fuel" and "3D-Fuel Tough" as available brands in HueForge's filament selector. Each filament includes:
+
+- **Accurate Colors**: Real hex color codes from 3D Fuel's specifications
+- **Transmissivity Data**: For realistic light transmission in your models
+- **Material Types**: Properly categorized as PLA+ or PCTG
+- **Complete Range**: From opaques to transparents, metallics to fluorescents
+
+## Filament Highlights
+
+- **Transparent Options**: Clearly Natural, Transparent Ruby Red, Transparent Lime Green
+- **Metallics**: Gold, Silver, Copper variations
+- **Fluorescents**: High-visibility colors for standout prints
+- **Standard Colors**: Complete spectrum of everyday printing colors
+- **Specialty Colors**: LulzBot Green, Bitcoin Orange, and more
+
+## Community Integration
+
+This library was created for the 3D Print Meetup community to enhance HueForge projects with accurate 3D Fuel filament data. Perfect for:
+
+- Multi-color lithophanes
+- Transparent art pieces
+- Color-accurate prototyping
+- Community challenge projects
+
+## Support
+
+For questions about this filament library or HueForge integration, contact the 3D Print Meetup organizers or visit our community resources.
+
+---
+
+*Last Updated: October 2025*  
+*Source: 3D Fuel Official Shopify Database*