v1.6.0 — gpt-5.6-sol default

Changed

• Default Codex model is now gpt-5.6-sol (GPT-5.6 Sol, GA 2026-07-09). "latest" and unset model both resolve to it; gpt-5.5 is the documented fallback while Sol rolls out across account tiers.
• Recommended model pair advances from gpt-5.5/gpt-5.4 to gpt-5.6-sol/gpt-5.5 across the README, CLI --model help, MCP tool descriptions, and error tips. Explicitly configured model IDs are still forwarded unchanged (recommend-not-enforce policy).
• MODEL_ERROR fallback tips now derive the alternate model from the recommended list with a case-insensitive comparison, so the tip never recommends the model that just failed.
• @openai/codex-sdk exact pin bumped 0.128.0 → 0.144.0 (bundled Codex CLI 0.144.0), required for Sol.

Notes

• If Sol has not reached your Codex account tier yet, pin {"model": "gpt-5.5"} in .reviewbridge.json — the error tip will point you there too.
• 809 tests, lint, typecheck, build all green; live-verified end-to-end with Sol serving plan, code, and precommit reviews.