[codex] Remove redundant plugin app auth state

[xl-openai]

Summary

• remove the redundant needsAuth field from AppSummary and generated app-server schemas
• stop plugin/read from querying Apps MCP solely to hydrate unused connector auth state
• preserve plugin/install.appsNeedingAuth membership and app/list.isAccessible as the authentication signals

Why

Codex App and TUI do not consume plugin/read.plugin.apps[].needsAuth. Hydrating it could establish an Apps MCP connection and discover tools on a cold plugin/read request, adding avoidable latency. The plugin APIs are still marked under development, so removing this wire field is preferable to retaining a misleading default.

Verification

• just write-app-server-schema
• just fmt
• just test -p codex-app-server-protocol
• just test -p codex-app-server plugin_install_uses_remote_apps_needing_auth_response
• just test -p codex-app-server plugin_install_returns_apps_needing_auth
• just test -p codex-app-server plugin_read_returns_plugin_details_with_bundle_contents
• just test -p codex-tui plugin_detail_popup_snapshot_shows_install_actions_and_capability_summaries
• $xin-build simplify and debug reviews

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 8e0cb42464

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".

[chatgpt-codex-connector]

Keep Python v2 models in sync with AppSummary

Removing needs_auth leaves generated Python v2 models requiring needsAuth, so plugin app responses fail to parse for Python clients. Check this app-server API break per guidance.

Useful? React with 👍 / 👎.

[xl-openai]

python sdk has its own pipeline.