* fix(codex): start custom providers with reserved names
Codex rejects custom provider keys such as ollama before a turn starts.
Namespace the generated keys without changing user-facing provider ids.
Keep older sessions discoverable and select the new key explicitly when
resuming them, so the startup fix does not strand existing conversations.
Closes#6874
Co-authored-by: Egg3901 <rainfordmason@gmail.com>
* fix(codex): keep native sessions out of custom provider imports
* fix(providers): align custom provider example with generated config
Correct the documented internal provider key and simplify import filtering while preserving native and legacy session selection.
* fix(codex): exclude native GCP sessions from custom imports
* test(codex): seed sessions through the portable launcher
---------
Co-authored-by: paseo-bot[bot] <266920839+paseo-bot[bot]@users.noreply.github.com>
Co-authored-by: Egg3901 <rainfordmason@gmail.com>