SAGE Router Adds a SELF/COLLABORATE/HANDOFF Decision Layer Above A2A Discovery, 677 Stars in Two Days

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wang2122/sprix-sage-router argues that agent discovery answers which agents exist but not who should work with whom after execution has already begun, and evaluates three routes in one auditable objective: SELF when existing capability and context suffice, COLLABORATE when a small complementary team covers missing requirements, and HANDOFF when specialist advantage exceeds context-transfer loss. It then assigns task-DAG roles, schedules dependencies and learns from execution evidence under permission, budget and deadline constraints. MIT-licensed Python 3.10+, labeled a research preview, and climbing at roughly 338 stars a day.