fix: hide Codex subagent lifecycle events

[MattPua]

Problem

Codex subagent wait and close operations appear in the conversation tool list, exposing internal orchestration details.

Changes

• Filter Codex wait and closeAgent tool calls before they reach conversation state
• Apply the filter to live events and session history replay

How did you test this?

• pnpm exec vitest run src/adapters/codex-app-server/mapping.test.ts
• pnpm exec biome lint src/adapters/codex-app-server/mapping.ts
• pnpm typecheck

Automatic notifications

• Publish to changelog?
• Alert Sales and Marketing teams?

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Created with PostHog Code

[github-actions]

React Doctor found no issues in the changed files. 🎉

_{Reviewed by React Doctor for commit d6ba9a4.}

[trunk-io]

😎 Merged directly without going through the merge queue, as the queue was empty and the PR was up to date with the target branch - details.

[github-actions]

Trivial display filter — returning null for internal lifecycle tool names prevents them from rendering in the UI. No production risk.

[greptile-apps]

_{Reviews (1): Last reviewed commit: "fix: hide Codex subagent lifecycle event..." | Re-trigger Greptile}

[posthog]

👋 Visual changes detected for this PR.

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