release: move updater + codegraph downloads to dl.reasonix.io#3926
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The desktop updater, the manifest URLs cmd/sign rewrites at release time, and the codegraph mirror all pointed at the rate-limited pub-*.r2.dev dev subdomain. dl.reasonix.io is the same R2 bucket behind its custom domain (Cloudflare-cached, mainland-reachable), verified to serve the stable + canary pointers and the codegraph bundles with byte-for-byte parity before switching. Already-installed clients keep polling the pub-*.r2.dev endpoint baked into their binary; that URL stays live (same bucket, public dev access stays enabled), and the artifact URLs inside newly published manifests work for old and new clients alike.
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Completes the dl.reasonix.io migration started on the website (#3923): the desktop updater, the manifest URLs rewritten at release time, and the codegraph mirror now all use the R2 bucket's custom domain instead of the rate-limited
pub-*.r2.devdev subdomain.Changes
desktop/updater.go—r2Base→https://dl.reasonix.io. New builds poll the custom domain for both thelatest/andcanary/pointers; the GitHub releases fallback is unchanged..github/workflows/release-desktop.yml—R2_PUBLIC_BASE→https://dl.reasonix.io, so the artifact/sig URLsjqwrites into publishedlatest.jsonmanifests point at the custom domain.internal/codegraph/install.go—officialMirrorBase→https://dl.reasonix.io/codegraph; the GitHub source fallback is unchanged.Compatibility
Already-installed clients have the
pub-*.r2.devmanifest endpoint baked into their binary. That URL keeps working — it is the same bucket, and public dev access stays enabled — and the artifact URLs inside newly published manifests resolve for old and new clients alike. Nothing needs to be dual-published.Verified before switching
dl.reasonix.ioserveslatest/latest.json,canary/latest.json, and all three desktop artifacts with 200; range requests return 206.darwin|linux|win32×x64|arm64) plusSHA256SUMSreturn 200 on the custom domain, matching the dev-subdomain behavior exactly.go build ./...+ codegraph and updater tests pass in both modules; the one failing desktop test (TestUpdateMCPServerSplitsPastedCommandLine) fails identically on cleanmain-v2on this machine and is unrelated.