feat(cli): manage access tokens under project keys

[tkkhq]

Why

• Project access tokens are managed under cloud access-tokens, while other project keys are grouped under projects keys.

Summary

• add projects keys access-tokens with create, list, get, usage, and revoke through the existing access-token commands
• keep cloud access-tokens and its alias available
• update CLI docs and test API routing, help, and next-page output for the new path

Verification

• go test ./internal/cmd/project ./internal/cmd/accesstokens ./internal/cmd/root -count=1
• make check

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[tkkhq]

@codex review

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-26T01:08:59.826799Z	afc5eef	Manual request
🔒 Security Review	✅ Completed 2026-09-26T01:09:45.625119Z	afc5eef	Manual request

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 🎉

Reviewed commit: afc5eefdab

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🛡️ Codex Security Review · Automatically triggered

Security review completed. No security issues were found in this pull request.

Reviewed commit: afc5eefdab

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