Align coding-agent metadata sources

[Stephen Belanger (Qard)]

Summary

• set Codex root metadata.source to the stable codex agent identity
• record Codex SessionStart lifecycle values in metadata.session_source
• preserve the existing Pi, OpenCode, and Antigravity stable source identities, covered by their translator tests

Testing

• cargo fmt --manifest-path bt-daemon/Cargo.toml -- --check
• cargo test --manifest-path bt-daemon/Cargo.toml --test codex_translator --test claude_translator --test pi_translator --test opencode_translator --test antigravity_translator

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-01T13:32:43.734899Z	dd25c9d	PR opened

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[Abhijeet Prasad (AbhiPrasad)]

should we write a note in the skill about this?

[Stephen Belanger (Qard)]

Nah, it's generally best to avoid bloating skills with implementation details. Better to just ensure there's test coverage validating consistency across coding agents.