## Why
`just log` derived the logs database path from `CODEX_HOME`, so it could read
the wrong database when `sqlite_home` or `CODEX_SQLITE_HOME` selected a
different location.
## What changed
- Move `logs_client` into `codex-cli` so it can resolve the shared
`SqliteConfig` through the standard configuration loader.
- Keep `--db` as a direct override that skips config loading and preserves
native path bytes.
- Update the `just log` recipes to run the client from its new crate.
## Testing
- Add coverage for bypassing invalid Codex config with `--db`.
- Add Unix coverage for non-UTF-8 database paths.
GitOrigin-RevId: fabd64a66543be26a6f5d3b5e509016c3270350e
