Official OpenAI hosts and models.dev entries without an api field left
Astra falling back to reasoning effort none and empty Fast tiers. Persist
complete per-model metadata, advertise Astra reasoning/Fast locally, and
surface partial sync warnings when image models remain incomplete.
Co-authored-by: Cursor <cursoragent@cursor.com>
避免 Codex OAuth 模型归一化把 gpt-5.5-pro 降级为 gpt-5.5。\n\n同时补充 GPT-5.5 Pro 的计费回退与长上下文计费策略,保证保留上游模型名后仍使用现有 GPT-5.5/GPT-5.4 计费规则。\n\n验证:\n- go test ./internal/service/...\n- go build ./cmd/server/