v0.2.3

[0.2.3] - 2026-06-24

New Features

• Genetic Algorithm Evolution System (Beta): Full GA genome package with Population, Crossover (Inherit/HalfSplit/Uniform modes), TournamentSelection, and strategy mutation engine. Supports deterministic reproduction via seed control, elite preservation, adaptive survival rates, and diversity tracking with fitness sharing. (GA Hardening Plan)
• Autonomous Evolution (Dream Mode v1): Closed-loop evolution orchestration with Dream Cycle (trigger → mutate → evaluate → adopt → record lineage). Includes arena regression testing with Welch's t-test, bandit feedback loop for experience quality optimization, and full genealogy tracking.
• Agent Resurrection & Snapshot System: Pluggable health checking for agent recovery, checkpoint-based resurrection with state restoration from EventStore and MemoryStore.
• Tiered Scoring System: Multi-level scoring pipeline with FailoverScorer integration. Includes scoring cache optimization (atomic hit/miss counters), hybrid scoring with prompt crossover modes, and unevaluated score guardrails.
• JSONL Training Data Pipeline: End-to-end pipeline for agent strategy evolution and experience distillation data export.
• Leader Agent Hardening: Nil validation for all constructor parameters (memory manager, aggregator, parser, planner, dispatcher). Session initialization via sync.Once. Comprehensive error collection during Stop() with joined errors from distillation/streaming goroutines.
• Workflow Engine Hardening: Thread-safe HITL handler/store access via sync.RWMutex. Workflow execution timeout (default 30s) to prevent indefinite blocking. Proper OutputStore.Close() cleanup.
• Event Store Hardening: Errgroup-based compaction with timeout context (30s). Nil compactor/repo guards in all read paths. MemoryEventStore Close() returns ErrEventStoreClosed on double-close for idempotent shutdown.
• LLM Client Validation: Config validation enforces required Provider and BaseURL fields. Close() idempotency via sync.Once. OpenAI adapter properly handles io.ReadAll errors instead of silently discarding them.
• MCP Client Hardening: Nil client guard in tool registration. Godoc-style documentation for all public APIs. SSE transport fixes double-close of resp.Body (deferred close only in receiveLoop).
• Memory Manager Config Validation: Validates MaxTasks, MaxDistilledTasks, DistilledTaskTTL, and VectorDim are positive. Stop() collects all errors and returns them joined.
• Crossover & Selection Validation: Crossover.Validate() and TournamentSelection.Validate() methods for post-construction config invariance checking. Defensive nil checks and enum validation.

Improvements

• Renamed project to ARES (Adaptive Resilient Evolution System)
• Enhanced scoring cache with atomic counters replacing sync.RWMutex
• Improved error visibility with structured error wrapping across all modules
• Added debug logging to TaskDispatcher and planner fallback warnings
• Default DistilledTaskTTL set to 30 days in DefaultMemoryConfig()
• Guarded all CompactableEventStore read paths against nil compactor/repo

Bug Fixes

• Fixed data race in DynamicExecutor recovery path with proper timeout handling
• Fixed MemoryEventStore.Close() idempotency — second+ calls return ErrEventStoreClosed
• Fixed SSE transport double resp.Body.Close() causing panic on shutdown
• Fixed LLM client Close() race condition via sync.Once
• Fixed OpenAI adapter silently swallowing io.ReadAll errors in error paths
• Fixed Population.ScoreAgents panic recovery logging with agent context
• Fixed updateBestEverLocked concurrency safety with deep copy via a.Clone()
• Fixed NewTaskPlanner/NewTaskPlannerWithConfig silent fallback from invalid maxTasks
• Added nil validation in leader.New, NewTaskDispatcher, and NewMCPManager
• fix #33
• fix #32

What's Changed

• 0.2.3 by @Timwood0x10 in #34

Full Changelog: v0.2.2...v0.2.3