kami
82674e85c4
Add CapabilityAwareRoutingStrategy — it hard-filters to providers that declare every required capability (like FirstAvailable) but ranks the matches by summed required-capability score; ties keep list order, so it is a strict superset of first-available. The server now wires it as the routing policy. The orchestrator augments a stage's required capabilities with ModelCapability.ToolCalling when the stage grants tools, so tool-heavy stages route to the best tool-calling model rather than whichever healthy provider comes first. Scores come from each provider's declared capabilities(); observed per-model reliability (GET /metrics/tool-reliability) can feed in later as an additional weight. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>