Parse the switch with pydantic TypeAdapter(bool) so 1/true/yes/on and 0/false/no/off all work, and treat an unparseable value as unset instead of off. PYTHON_ONLY and RUST_REQUIRED still ignore both switches
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Replace the per-route enablement helpers (rust_enabled, rust_ocr_enabled, RUST_CHAT_COMPLETIONS_PROVIDERS, FallbackMode) with a single rule table in litellm/rust_bridge/catalog.py that maps a Context(route, provider, model, delivery) to one of four rollout tiers, and a pure decide() that turns tier plus process/env switches into a Decision. runtime.run/arun own the only fallback path: Python for PYTHON, native then Python on missing binding or admission decline for RUST_WITH_FALLBACK, raise for RUST_REQUIRED. OCR is the first route on the shared runtime; chat completions, Anthropic messages, and Responses websocket policy checks now read the catalog.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>