Sprung FEA v0.2.1

This patch release fixes the Linux AppImage's dependency on the legacy FUSE 2 library. The installer now embeds the static AppImage runtime with FUSE 3 support, so modern Ubuntu users do not need to install libfuse2 or libfuse2t64 to mount it.

The build remains on stable electron-builder 26.15.3, with AppImage toolset 1.0.3 explicitly selected. No prerelease dependency is introduced. Application features are unchanged from v0.2.

Install

The tag and application version are v0.2.1 and 0.2.1.

Platform	Download	Installation
macOS, Apple Silicon	Sprung-FEA-0.2.1-arm64.dmg	Open the DMG and drag Sprung FEA to Applications.
Windows, x64	Sprung-FEA-Setup-0.2.1.exe	Run the installer; it installs for your user without administrator rights.
Linux, x64	Sprung-FEA-0.2.1-x86_64.AppImage	Run chmod +x Sprung-FEA-0.2.1-x86_64.AppImage, then launch it.

Everything needed to mesh and solve is bundled. Builds are unsigned (macOS is ad-hoc signed, without notarization). On macOS, use System Settings → Privacy & Security → Open Anyway if launch is blocked. On Windows, use More info → Run anyway if SmartScreen appears.

Validation and sources

Built from commit d3e37a2e45414eb1a7e9d87c91723ee4e63255b8 in Build run 37730021841. All three platforms passed direct-solver comparisons and static/frequency solves using their packaged engine and solver. The downloaded Linux installer was also checked byte-for-byte against the pinned static FUSE 3 runtime. The local production build passed; no local test suites were rerun.

Sprung-FEA-v0.2.1-sources.tar.gz includes the tagged application, upstream sources, build recipes and patches, including the new static AppImage runtime and its FUSE 3 source. SHA256SUMS.txt covers all installers and the source bundle. Windows and Linux bundle Intel oneMKL in the separate sprung-solve program, with its redistribution license and notices.

See the README for usage and limitations, and v0.2 for the preceding feature release.