v1.1.0 - Sliding-Window Rate Governor & Nexus Aegis G2 Bridge

What's New in v1.1.0

• Sliding-Window TPM & RPM Rate Governor (synapse_router.rate_limiter):
  • RateGovernor engine with eager timestamp pruning across configurable rolling windows (default 60s).
  • Exact retry_after_seconds calculation on request (RPM) or token throughput (TPM) quota saturation.
  • Per-endpoint custom rate profiles with burst_multiplier support.
  • Preemptive candidate down-ranking to prevent HTTP 429 provider rate-limit storms.
• Nexus Aegis G2 Bridge (synapse_router.aegis_bridge):
  • Canonical G2_BUDGET_ROUTING attestation payload generator with RFC 6962 SHA-256 leaf digest (0x00 prefix).
  • Direct integration method SynapseRouter.export_aegis_g2(receipt).
• MCP Server Expansion:
  • Added synapse_rate_limit_status and synapse_export_aegis_g2 tools.
• 77 Verified Tests passing in 0.15s on GitHub Actions CI.

v1.0.0 — Cost-Aware Multi-Model AI Agent Router & Cascade Gateway

synapse-router v1.0.0

• TaskComplexityClassifier: Sub-millisecond deterministic prompt & tool-schema complexity scoring (FAST_LOCAL, BALANCED, FRONTIER_REASONING).
• SynapseRouter: Pareto utility endpoint selection + confidence-gated cascade escalation + HMAC-SHA256 signed RoutingDecisionReceipt.
• EndpointHealthRegistry: 3-state rolling circuit breaker (CLOSED -> OPEN -> HALF_OPEN) with HTTP 429 fast-trip & EMA latency tracking.
• SemanticPromptCache & TokenBudgetGovernor: 64-bit Locality-Sensitive SimHash semantic cache (Hamming <= 3) with tool-context isolation + 80% soft-cap tier downgrade.
• MCP Server & CLI Benchmark Suite: JSON-RPC 2.0 MCP server and 500-request benchmark demonstrating 90.59% USD cost reduction and 100% provider failover recovery.