Add platform-specific packaging workflow

[beNative]

Summary

• replace the legacy CI workflow with a packaging-focused workflow that targets macOS, Windows (x64/ia32), and Linux (x64/arm64/armv7l)
• add npm scripts for each platform so the workflow can invoke platform-aware electron-builder commands with the correct flags
• configure caching, environment variables, and artifact handling to improve build stability across runners

Testing

• not run (workflow change)

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https://chatgpt.com/codex/tasks/task_e_68f2684d8aec8332ab0f61be2f64b940

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Linux packaging job installs non‑existent libfuse2 on ubuntu‑latest

The new workflow unconditionally installs libfuse2 before packaging. ubuntu-latest runners now use Ubuntu 24.04 where the package was renamed to libfuse2t64, so apt-get install --no-install-recommends -y rpm libarchive-tools libfuse2 exits with “Unable to locate package libfuse2” and the entire Linux matrix (x64/arm64/armv7l) fails before any build occurs. Consider installing libfuse2t64 or falling back when libfuse2 is unavailable so the workflow runs on current runners.

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