v0.5.0 Changelog

Added

Added a full Agent UI flow and taxonomy reference covering session/thread lifecycle, composer, run phases, ordered message parts, tool/action loops, artifacts, evidence, task/subagent state, context, permissions, hydration, diagnostics, and validation.
Added a dedicated source index for traceable citations, including Agent Skills specification style, AG-UI events, AI SDK UIMessage parts, assistant-ui parts, LangGraph streaming/HITL, OpenAI ChatKit thread events, Apps SDK tool UI boundaries, Codex, Claude Code, and Lime roadmap research.
Extended the public event schema with taxonomy fields (owner, scope, phase, surface, persistence, control) and additional session, plan, tool, task, agent, context, permission, diagnostics, and metrics event classes.
Added acceptance coverage for task/multi-agent state, context/compaction, diagnostics, and metrics.

Clarified live message part rendering: active turns preserve typed event/part order, so reasoning, tools, and answer text can interleave.
Defined running process visibility and completed process archiving: running tool/reasoning steps stay visible, then collapse into timeline summaries after completion.