llm_cost_tracker 0.7.3

Tracks token usage, latency, and estimated costs for RubyLLM, OpenAI, Anthropic, Google Gemini, OpenRouter, DeepSeek, and OpenAI-compatible APIs. Works through Rails SDK integrations, Faraday middleware, or explicit track/track_stream helpers, with ActiveRecord storage, tag-based attribution, price sync tasks, and budget guardrails.