Conciseness

The body is entirely imperative operational constraints and executable commands with zero concept explanation or padding — e.g., 'Copy encrypted rows without decrypting them', 'roll back failed writes' — every token earns its place. Not 4 since there are no instances of over-explanation to trim.

Actionability

Fully executable, copy-paste-ready bash blocks with env-var guards (`: "${MIGRATION_PROFILE:?...}"`) covering the primary ChatGPT initialize/copy/verify sequence and the restore path, and both referenced scripts exist with matching flags. Not 4 because the common cases are complete and runnable, with only the secondary Google verification left in prose.

Workflow Clarity

The destructive-operation validation requirement is met: 'inspect each exit', required `status=verified` with `login_verified=true`, explicit exit-code semantics (2 unconfirmed, 1 tool error), rollback of failed writes, interrupted-initialization resume rules, and a restore feedback loop with pre-restore checks. Not 4 because validation checkpoints and error-recovery loops are explicit throughout, not merely present.

Progressive Disclosure

Sections are well organized and both bundle scripts (`copy-cookies.py`, `verify-chatgpt-profile.mjs`) are referenced exactly where invoked, one level deep with no nested references. Not 5 because ~80 lines of inlined operational policy (restore semantics, exit codes, safety constraints) could partly move to a reference file to keep SKILL.md a leaner overview; not 3 since what is inlined is clearly signaled and navigable.

Specificity

The description lists multiple concrete actions — 'Copies selected-site cookies between local profiles', 'Google and ChatGPT/OpenAI site selections, destination backups and restore, and expected-account verification' — comprehensively covering the skill's capabilities with no vague filler.

Completeness

It explicitly answers both 'what' (cookie copy between profiles with site selection, backup/restore, and account verification) and 'when' via the 'Use for cookie copy, 复制 Cookie, 搬登录态 or reusing an existing ChatGPT session' trigger clause. Not 4 because the 'when' is explicit with concrete trigger phrases, not merely implied.

Trigger Term Quality

Natural triggers are present ('cookie copy', '复制 Cookie', '搬登录态', 'reusing an existing ChatGPT session in an isolated profile'), including multilingual synonyms, but common English variations like 'transfer login', 'migrate session', or 'Chrome profile cookies' are missing. Not 3 since keyword coverage is genuinely good with several natural phrasings.

Distinctiveness Conflict Risk

A clear niche — same-machine macOS Chrome cookie transfer for Google/ChatGPT/OpenAI sites — with distinct, specific triggers that would not plausibly fire for another skill. Not 4 since there is no meaningful overlap risk with closely related skills.