Get Feature Flags

Resolved boolean feature flags for the requesting user.

Field naming follows the canonical agent names in the product:

• research_agent_enabled: Deep-research / multi-step research agent (Datadog key research_agent_enabled; renamed from the legacy auto_agent_enabled).
• mle_agent_enabled: Claude-powered MLE chat agent.
• continuous_adaptation_agent_enabled: Autonomous fine-tuning loop (Datadog key continuous_adaptation_agent_enabled; renamed from the legacy data_engine_agent_enabled).
• usage_insights_ui_enabled: Customer-facing usage-aware clustering insights UI (ENG-2110). Decoupled from the backend classify pipeline so the UI can be hidden while the backend keeps computing insights.
• observability_enabled: Coding-agent cost Observability page and the /observability API. Off by default; enabled per-team via Datadog targeting (local dev bypasses the gate).
• pioneer_openrouter_provider_enabled: Whether the OpenRouter provider is allowed for inference registration and routing (Datadog key pioneer_openrouter_provider_enabled). Surfaced here so OpenRouter-specific synthetics can self-gate against the same flag (ENG-4977): when the flag is off, probes that exercise the OpenRouter path exit green rather than paging on a policy-disabled provider.