Update the module Go directive and release Docker build images from Go 1.26.2 to Go 1.26.4 so local, CI, hotfix, and release builds use the same patched toolchain.
Keep ordinary Go module requirements and replacements unchanged; this intentionally avoids a third-party dependency refresh while allowing container system packages to refresh through the newer golang Alpine base image and existing apk resolution.
Update the security advisory index to record the Go 1.26.4 toolchain bump alongside the earlier Go 1.26.2 security update.
Verified with go build ./..., go vet ./cmd/, and focused cmd tests. go mod tidy -diff was attempted as a read-only dependency drift check but could not complete because proxy.golang.org timed out while fetching uncached transitive test modules.
Co-authored-by: Codex <codex@openai.com>
Update go.mod and all golang build images from 1.26.1 to 1.26.2 to pick up the upstream 2026-04-07 security release.
This includes fixes for CVE-2026-32280 / CVE-2026-32281 in crypto/x509, CVE-2026-32283 in crypto/tls, and the related toolchain and standard library security fixes shipped in go1.26.2, without changing any unrelated dependencies.
Feng Ruohang