updates: add Windows appcast plumbing#61
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Add a Windows update proxy route and a small winsparkler utility that generates WinSparkle appcasts plus mirrored installer assets for Helium Windows releases.
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Summary
Adds the Windows-side appcast plumbing needed by the companion
helium-windowsupdater work forimputnet/helium-windows#58./updates/winproxy routing alongside the existing macOS update routeutil/winsparkler/to generate WinSparkle appcasts for x64/arm64 Helium releasesValidation
Ran locally:
git diff --checkdocker build ./util/winsparklerCompanion PR
Notes
Opening this as draft because it is coupled to the companion Windows PR.
This intentionally keeps the initial rollout small: full-installer feeds only, no delta generation yet.
This also does not yet add signed Windows appcast metadata with parity to the macOS Sparkle pipeline. The current end-to-end verification remains HTTPS transport plus client-side Authenticode verification of the downloaded installer.
AI assistance disclosure
Assisted by the pi coding harness, including parallel pi subagent review passes. Models used during the work included
anthropic/claude-opus-4-6,anthropic/claude-sonnet-4-5,openai-codex/gpt-5.4,openai-codex/gpt-5.4-mini, andopenai-codex/gpt-5.3-codex.I manually reviewed and curated the final diff.