flows logs does not render Codex transcripts (only frame placeholders) #541

Problem

flows logs <run> --step <agent-step> renders Claude transcripts, but not Codex transcripts. For a Codex step it prints only frame placeholders:

LOG f92bf832-…  step agent-17  199,195 bytes  complete
── attempt 1 · 199,121 bytes ──
  frame  thread.started (76 chars, not rendered here — see --raw)
  frame  item.completed (43,944 chars, not rendered here — see --raw)
  …
  frame  turn.completed (166 chars, not rendered here — see --raw)

In the software-factory preset the reviewer steps run on Codex, so the most important verdict in the run cannot be read without --raw plus hand parsing. The verdict here was "One P2 remains … review.clean was not created".

Proposal

Teach packages/sdk/src/cloud-transcript.ts (parseAgentTranscript / renderAgentTranscript) the Codex JSONL vocabulary:

• thread.started, turn.started and turn.completed (with usage)
• item.started / item.completed for these item types: agent_message, reasoning, command_execution (command, exit code, bounded output), file_change (paths), mcp_tool_call, and error

Render it in the same shape as Claude transcripts: numbered tool calls with bounded arguments and result sizes, and agent messages printed in full (redacted). The final agent message is the step's answer.

The flows status --cloud step summary already counts Codex tool calls (tools: command_execution ×13), so the parser partly knows the shape. Only logs rendering is missing.

Acceptance

• A fixture Codex transcript renders its commands, file changes and final agent message.
• Unknown frame types still fall back to the placeholder line.
• Redaction applies to every rendered string.
• Mutation-prove the renderer.