Rename GitHub org references from onkernel to kernel

[rgarcia]

Summary

• Updates all github.com/onkernel/ references to github.com/kernel/ across the repo
• Go module path: github.com/onkernel/kernel-images/server → github.com/kernel/kernel-images/server
• Go imports: all import paths updated (38 files)
• go.mod replace directive: github.com/onkernel/neko/server → github.com/kernel/neko/server
• go.sum: neko dependency reference updated
• Markdown: GitHub badge, issues link (README.md), upstream remote (CONTRIBUTING.md)

Intentionally unchanged

• KraftCloud image tags (onkernel/chromium-headful, onkernel/chromium-headless, etc.)
• DockerHub image references
• xonkernel GitHub user reference
• Shell script image variables

Test plan

• Verify Go build compiles: cd server && go build ./...
• Verify go mod tidy produces no diff
• Run go test ./... to confirm imports resolve
• Confirm CI passes

🤖 Generated with Claude Code

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Note

Medium Risk
Mostly mechanical org/module-path renames, but changing the Go module path and replace target can break builds or downstream consumers if any references were missed or if tooling still expects the old import path.

Overview
Updates repository references from github.com/onkernel/... to github.com/kernel/... across docs and the Go codebase.

This includes switching the Go module path in server/go.mod, updating all internal import paths in server code/tests/e2e, and repointing the github.com/m1k1o/neko/server replace directive (and go.sum) to github.com/kernel/neko/server.

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[firetiger-agent]

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Any PR that changes the kernel API. Monitor changes to API endpoints (packages/api/cmd/api/) and Temporal workflows (packages/api/lib/temporal) in the kernel repo

Reason: PR updates GitHub org references across the codebase but does not change kernel API endpoints or Temporal workflows; this is a refactoring/rename task rather than a functional API change.

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