v3.9.0

Added

• RubyLLM::Agents.track block API — Group multiple agent executions into a single tracked request with request_id and tags. Includes Tracker and TrackReport classes for aggregated cost/token analytics
• Requests dashboard — New dashboard page for viewing and filtering tracked request groups with per-request detail views
• Convenience query API — RubyLLM::Agents.executions, .recent, .for_agent, .for_model class-level query methods for accessing execution data from host apps
• doctor generator — rails generate ruby_llm_agents:doctor validates installation, configuration, database tables, and RubyLLM connectivity
• demo generator — rails generate ruby_llm_agents:demo scaffolds a working example agent with demo rake task
• Structured logging & pipeline tracing — Middleware base class now provides structured log_info/log_warn/log_error helpers with trace context for debugging pipeline execution
• Trackable results — All Result subclasses register with the active tracker for automatic request-level aggregation
• Wiki guide — "Using Data In Your App" wiki page documenting the convenience query API

Changed

• Modernized generators — Agent and install generators produce cleaner, DSL-focused templates with better inline documentation
• Improved error messages — Actionable error messages for common configuration mistakes (missing API key, missing model, etc.)
• README quickstart — Streamlined golden-path getting started section
• Bumped ruby_llm dependency to v1.13.2

Fixed

• Tenant API keys — Use RubyLLM::Context#chat instead of passing context as keyword arg, fixing tenant-scoped API key isolation
• Test isolation — Fixed verify_partial_doubles issues in specs