chore: remove deprecated rand.Seed calls

[Piwriw]

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[cubesandboxbot]

Claude finished @Piwriw's task in 41s —— View job

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PR #339 Review: chore: remove deprecated rand.Seed calls

Progress:

• Gather context and analyze PR changes
• Review code changes
• Post review feedback

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Review Summary

This is a straightforward cleanup removing deprecated rand.Seed() calls. The project uses Go 1.24.8, well past Go 1.20 where math/rand became automatically seeded, making explicit Seed() calls unnecessary.

Changes look correct:

• CubeMaster/cmd/cubemaster/app/main.go (+0/-2): Removes "math/rand" import and rand.Seed(time.Now().UnixNano()) call. The "time" import is correctly retained since it's still used elsewhere (time.Now(), time.Since(), time.Duration, etc.).

• CubeMaster/pkg/base/node/node_test.go (+0/-2): Removes "time" import (was only needed for the Seed() call) and pseudorand.Seed(time.Now().UnixNano()). The pseudorand "math/rand" import is correctly retained since pseudorand.Intn() and pseudorand.Float64() are still used in the same file.

No issues found. This is a clean, minimal change that eliminates the deprecation warnings that Go 1.20+ produces for rand.Seed() calls. Since Go 1.24 now seeds the global random source automatically with a random value, the behavior is equivalent — no runtime impact.

[fslongjin]

LGTM. Removing the deprecated global rand.Seed calls is consistent with the current Go 1.24 toolchain, and the related node randomness test passed locally.