Fix golangci-lint findings

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Commit

Soph4mo ago

Address errcheck, goconst, and ineffassign warnings surfaced by golangci-lint. Also picks up incidental gofmt realignment in bootstrap.go's Params struct.

Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com Entire-Checkpoint: 49d875e7fe30