ExperienceEngine v0.1.2

Highlights\n- Codex default learning loop and managed install flow improvements\n- Retrieval pipeline upgrades: hybrid fusion, reranking stage, contextual query rewriting, uncertainty-aware routing\n- Organic experience convergence and priority-candidate lifecycle\n- Claude marketplace runtime-state detection hardened with explicit marker + hook/MCP heartbeats\n- OpenClaw finalize dedup and packaging fixes\n- Onboarding and install guidance polish\n- MIT license added and repository metadata completed