fix(desktop): upgrade electron-builder to 26.15.1, use FUSE-free AppI…

[razzeee]

…mage runtime

Closes #2505

What Changed

Update electron builder in order to use newer appimage runtime

Why

Modern linux systems don't have fuse2 anymore, so the appimage is unusable.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

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Note

Medium Risk
Changes only the desktop release toolchain, but a major electron-builder bump can alter Linux AppImage/macOS DMG/Windows artifact output and break CI or unsigned-build flags if config isn’t aligned with 26.15.x.

Overview
Upgrades the desktop app’s electron-builder dev dependency from 26.8.1 to 26.15.1 in apps/desktop/package.json, with a matching pnpm-lock.yaml refresh.

The lockfile moves the packaging stack to 26.15.x (app-builder-lib, dmg-builder, builder-util, electron-publish, etc.) and drops several older 26.8.1–only transitive packages (e.g. dmg-license and related macOS-only helpers). Newer builder pieces pull in updated signing/crypto and archive helpers (@peculiar/webcrypto, pkijs, unzipper, aws4 on publish).

electron-builder-squirrel-windows remains pinned at 26.8.1 in the resolved tree, so Windows Squirrel packaging still rides the older submodule while the top-level CLI is on 26.15.1.

^{Reviewed by Cursor Bugbot for commit 51a4576. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Upgrade electron-builder to 26.15.1 with FUSE-free AppImage support

Updates the electron-builder devDependency in apps/desktop/package.json from 26.8.1 to 26.15.1 and updates the lockfile accordingly. The new version adds support for FUSE-free AppImage builds, removing the FUSE kernel module requirement for Linux packaging.

^{Macroscope summarized 51a4576.}

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[macroscopeapp]

Approvability

Verdict: Approved

This PR upgrades electron-builder from 26.8.1 to 26.15.1, a build-time dependency version bump. The change is limited to package.json and the generated lockfile, with no runtime code modifications.

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Dismissing prior approval to re-evaluate 51a4576

[juliusmarminge]

Closing as superseded by merged PR #3790, which updates the same electron-builder files to a newer version.