3.9.0

Highlights

☁️ My Cloud Projects — browse, open, and deep-link (#751)

Full cloud project management from the desktop app:

• Paginated project list with refresh, delete confirmation, and upload shortcut
• Per-project file browser — inspect manifest files, open the main mesh, or download selectively
• qtmesh:// deep links — qtmesh://cloud/open?owner=…&project=… opens the file browser directly (Linux/Windows/macOS/snap URL handler registration included)
• Cloud import material fix — embedded textures rebind correctly after download so meshes no longer render white
• CLI/MCP — fetchAllProjects() pagination for qtmesh cloud list and MCP cloud tools

🔍 Real-ESRGAN texture upscaling (ONNX) (#405, #749)

AI super-resolution for material textures at 2× and 4×:

• Material Editor — upscale the active diffuse texture with progress/cancel UI
• CLI — qtmesh material --texture low.png --upscale 4 -o high.png
• MCP — upscale_texture tool
• Reuses the #404 ONNX infrastructure; models auto-download on first use from the QtMeshEditor-models HuggingFace repo

Notes

• ONNX upscaling and PBR synthesis remain disabled on Windows MinGW builds (MSVC ONNX Runtime only); Linux and macOS release builds include ONNX.
• Cloud deep-link handler is registered automatically on Linux .deb install; use scripts/register-qtmesh-url-handler.sh for local dev builds.

Full changelog: 3.8.1...3.9.0