Remove skills list extra roots

[xli-oai]

Summary

• Remove perCwdExtraUserRoots / SkillsListExtraRootsForCwd from the skills/list app-server API.
• Drop Rust app-server and codex-core-skills extra-root plumbing so skill scans are keyed by the normal cwd/user/plugin roots only.
• Regenerate app-server schemas and update docs/tests that only existed for the removed extra-roots behavior.

Validation

• just write-app-server-schema
• just fmt
• cargo test -p codex-app-server-protocol
• cargo test -p codex-core-skills
• just fix -p codex-app-server-protocol
• just fix -p codex-core-skills
• just fix -p codex-app-server
• just fix -p codex-tui

Notes

• cargo test -p codex-app-server --test all skills_list ran the edited skills-list cases, but the full filtered run ended on existing skills_changed_notification_is_emitted_after_skill_change timeout after a websocket 401.
• cargo test -p codex-tui --lib compiled the changed TUI callers, then failed two unrelated status permission tests because local /etc/codex/requirements.toml forbids DangerFullAccess.
• Source-truth check found the OpenAI monorepo still has generated/app-server-kit mirror references to the removed field; those should be cleaned up when generated app-server types are synced or in a companion OpenAI cleanup.

[xli-oai]

@codex review

[xli-oai]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

codex/sdk/python/src/codex_app_server/generated/v2_all.py

Lines 3662 to 3667 in 8835b5b

	per_cwd_extra_user_roots: Annotated[
	list[SkillsListExtraRootsForCwd] | None,
	Field(
	alias="perCwdExtraUserRoots",
	description="Optional per-cwd extra roots to scan as user-scoped skills.",
	),

Remove stale extra roots from Python SDK

The Rust v2 SkillsListParams and server handling no longer include perCwdExtraUserRoots, but the generated Python SDK still exposes and documents it. Python clients can keep sending this field and believe extra user roots are scanned, while the server now ignores it, so SDK behavior/documentation is out of sync with the API.

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[xli-oai]

@codex review

[chatgpt-codex-connector]

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

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".