Insight for: [Feature]: Cross-session fair queueing plus per-channel in-flight caps make multi-tenant deployment a first-class concern

This feature request addresses a critical architectural requirement for OpenSquilla's multi-tenant viability: robust resource management and fair allocation. The introduction of cross-session fair queueing and per-channel in-flight caps directly tackles the risk of resource exhaustion by a single tenant or channel, a common pitfall in shared infrastructure. This design ensures predictable performance and prevents "noisy neighbor" scenarios, which are detrimental to enterprise-grade SaaS offerings. By explicitly making multi-tenant deployment a "first-class concern," OpenSquilla is positioning itself for broader adoption in environments where resource isolation and equitable access are paramount. This move from basic concurrency to sophisticated queueing mechanisms is essential for scaling the platform and delivering on its promise of efficiency and intelligence in complex, shared operational contexts.