b696842570
- Added serviceTier option to OpenAI providers for controlling processing priority and cost across agent, completions, responses, and codex APIs. - Added providerPayload field to messages for transport-native history reconstruction in OpenAI Responses and Codex APIs. - Added /fast slash command and serviceTier setting to coding-agent for toggling OpenAI priority mode with fast mode indicator. - Added remote compaction support with encrypted reasoning preservation for OpenAI models in coding-agent. - Removed usage caching layer across all providers and refactored UsageFetchContext to eliminate cache and now dependencies. - Fixed OpenAI Codex streaming service_tier inclusion, provider retry logic with exponential backoff, and email-based credential deduplication.