Vixiv AI patch notes

## [1.4.0] - 2026-02-09

### Added

#### Sign In with Google
- **One-Click Google Login**: Sign in or sign up instantly with your Google account
  - No need to remember another password
  - Automatically links to your existing account if you've already registered with the same email
  - Your email is verified instantly

#### Volume Selection for Lattice Regions
- **New Volume Selection Tool**: Define exactly where you want lattice structures in your part
  - **Precise Control Panel**: Fine-tune your lattice region with exact values
  - Adjust position, rotation, and scale with sliders or direct number input
  - Values shown in millimeters matching your STL file

#### Vixiv Solution Recommendations
- **Smart Result Filtering**: Get a curated shortlist of the best optimization results
  - Toggle between recommended solutions and full results list
  - Recommendations highlight the optimal solutions for your goals (stiffness, mass reduction, etc.)
  - Save time by focusing on the best options first

#### New Printer & Material Support
- **Prusa CORE One+**: Now available as a printer option
- **Atomic Filament PETG PRO**: New material choice for Prusa CORE One+
- **Smart Material Selection**: Materials automatically filter based on your selected printer
- **New FDM Cell Type**: Full support for Vixiv FDM Special lattice structures with visualization and conformal generation

### Changed

#### Improved Results Display
- **Star Ratings for Confidence**: Optimization results now show confidence levels as star ratings instead of numbers
  - Easier to quickly identify high-quality results at a glance
  - More intuitive visual representation

## [1.2.0] - 2026-01-05

### Added

- Peformance confidence (Coefficient of Variance) column added to result table. New column displays the Coefficient of Variance (CV) metric in the results table, providing quantitative assessment of performance confidence and variability for each design solution.
- **V3-59**: Ability to change name and download location of exported mesh. Users can now customize the filename and storage path for exported mesh files, providing enhanced control over file management.
- **V3-137**: Adding demo STL files to every user's folder. Automated distribution of sample STL files into each user's folder for onboarding, tutorials, and feature demonstration purposes.
- User can now define the start point of voxel network

### Changed

- **V3-93**: Conformal lattice as default setting. Changed the application's default configuration to make conformal lattice the standard setting, streamlining workflows for new projects and users.
- **V3-73**: Get rid of/change # of voxels for solutions with conformal latticing enabled. Removed or modified the voxel count display/calculation for solutions when conformal latticing is enabled, resulting in performance improvements, reduced file sizes, or better model quality.
- **V3-138**: Change visualization shrink point. Modified the visualization shrink point parameter, affecting how visualizations are rendered and the visual representation of models.
- **V3-92**: Get rid of stiffness optimization when conformal lattice is enabled. Removed stiffness optimization calculations when conformal lattice feature is active, simplifying the optimization process for conformal lattice solutions.
- **V3-105**: Time difference between generating z direction and non-z direction visualization. Fixed inconsistency in visualization generation timing between z-direction and non-z-direction rendering, ensuring consistent visualization behavior.

### Fixed

- **V3-84**: Designs with high voxel numbers not exporting. Fixed export functionality that was failing for designs containing high voxel counts, ensuring all designs can be successfully exported regardless of complexity.
- **V3-112**: Correct mass reduction calculation for conformal lattice. Fixed the accuracy of mass reduction calculations specifically for conformal lattice features, ensuring correct weight/mass reporting for conformal lattice solutions.
- **V3-78**: "?" Explanation for tolerance. Added or improved explanation/help text for tolerance parameters, clarifying what tolerance means and how it affects the design process.

### Removed

- **V3-97**: Instanced mesh for beam visualization. Work item removed from sprint scope - instanced mesh optimization for beam visualization has been deferred to a future release.

## [1.1.0] - 2025-11-17

### Added

- **Conformal Latticing**: New toggle to switch between conformal and traditional lattice structures for improved part performance
- **Enhanced Visualization**: Better visualization capabilities for optimized parts
- **Improved Export Options**: Enhanced export functionality for optimized designs
- **Smart Error Messages**: Clear warnings and helpful guidance when optimization constraints cannot be met, including:
  - Part size compatibility checks
  - Load capacity validation
  - Stiffness target feasibility alerts

### Changed

- **Optimized Voxel Alignment**: Voxel arrangement now automatically aligns with your part geometry for better results
- **Symmetry Preservation**: The system now detects and preserves symmetry in your input parts
- **Smarter Voxel Placement**: Voxel packing now starts from the part's center of mass for improved structural integrity

### Fixed

- Large file uploads (up to 100 MB) now complete the optimization process successfully
- Token usage is now only deducted when optimization results are generated

## [1.0.0] - 2025-10-01

### Added

- Initial production release with core optimization features