Remove Codex/Gemini Models, Add Pi Live Listing · Entire

Expert Code Review Steps:

1. If no PR number is provided in the args, run gh pr list to show open PRs.
2. If a PR number is provided, run gh pr view <number> --json title,body,author,baseRefName,headRefName,state,additions,deletions,changedFiles,labels to get PR details.
3. Run gh pr diff <number> to get the diff.
4. Analyze the changes and provide a thorough code review that includes:
   • Overview of what the PR does
   • Analysis of code quality and style
   • Specific suggestions for improvements
   • Any potential issues or risks

Focus Areas:

• Code correctness
• Following project conventions
• Performance implications
• Test coverage
• Security considerations

Review Considerations:

• Format your review with clear sections and bullet points.

Scope:

Review the commits unique to this branch vs origin/HEAD, plus any uncommitted changes in the working tree. Ignore code outside this scope.

Checkpoint Context from Commits in Scope:

• Commit (86a03348156e): prompt: Create a separate PR for that. Then come back to this one.

Use entire explain <id> for full checkpoint context, or entire explain <id> --raw-transcript for raw transcripts.

Recent Commits:

• Commit (724f579): Drop fabricated "example" models for codex/gemini.
  The codex/gemini model listers returned hardcoded "example" model ids that looked pickable but weren't guaranteed valid (gpt-5-codex could fail outright). Neither CLI has a model-enumeration command, so remove the listers entirely. The model picker then offers just Default + Custom for those agents (its existing no-models behavior), and --models shows "(no advertised models; pass any value your CLI accepts via --model)". Claude keeps its real, valid aliases (opus/sonnet/haiku). Tests updated.
• Commit (d91d995): Implement Pi live model listing for entire review --models.
  Pi has a real model-enumeration command, so ListModels shells out to pi --list-models and parses the table into provider/model entries. parsePiModelList is split out and unit-tested (no pi binary needed).