feat: adopt streamEvents v2 protocol for enhanced real-time TUI streaming - #56
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…ming Switch agent streaming from streamMode 'values' to streamEvents with v2 protocol for granular event-based streaming. This enables: - Reasoning/thinking content streamed in real-time via on_chat_model_stream events with chunk.reasoning property (e.g., Claude thought blocks) - Explicit tool lifecycle events: on_tool_start, on_tool_end, on_tool_error with input/output context, showing 'Running: tool_name' during execution - Final AI response text streaming as token deltas via on_chat_model_stream events with AIMessageChunk content extraction - Model-level streaming enabled by default (ChatOpenAI streaming: true) Changes: - src/agent/react.js: rewrite callReactAgentStreaming to use streamEvents v2 protocol, emit text/reasoning/tool_start/tool_end/tool_error events - src/provider/openai.js: enable streaming: true on ChatOpenAI instances - src/tui/app.js: handle reasoning, activeToolCall, and text append events - src/tui/conversationPanel.js: render reasoning content and running tool indicators alongside existing toolCallDisplay - src/tui/messages.js: extend Message typedef with new fields - Update all related tests to mock streamEvents instead of stream/AgentStream
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Description
Switches the agent streaming from
streamMode: "values"to thestreamEventsv2 protocol for finer-grained event-based streaming. This enables real-time reasoning/thought display, explicit tool lifecycle signals, and incremental text streaming in the TUI.Type of Change
Testing
npm run test— 776 tests pass, 164 suitesstreamEventsinstead ofstream/AgentStreamprompts.test.js(unrelated — pre-date this change)Coverage
npm run coverage— pre-commit hook passes)Checklist
npm run lintpassesChanges by file
src/agent/react.jscallReactAgentStreamingusesagent.streamEvents({ messages }, { version: "v2" }); emitstext,reasoning,tool_start,tool_end,tool_errorsrc/provider/openai.jsChatOpenAIcreated withstreaming: trueby defaultsrc/tui/app.jsreasoning(thinking content) andactiveToolCall(running tool indicator); usescommittedContentfor final response textsrc/tui/conversationPanel.js(thinking)prefix for reasoning;- Running: tool_name ...for active tool callssrc/tui/messages.jsreasoningContent,activeToolCall,toolCallDisplayfieldsArchitecture:
streamEventsv2 vsstreamMode: "values"streamMode: "values"(old)streamEvents v2(new)on_chat_model_streamwithchunk.reasoningtool_callson_tool_starteventon_tool_endwithdata.outputon_tool_errorwith error messagePR Template Checklist
All sections below filled per section 5.4 (no blanks).
Files Changed (10 files, +543 −277)
src/agent/react.js,src/provider/openai.js,src/tui/app.js,src/tui/conversationPanel.js,src/tui/messages.js,tests/unit/conversationPanel.test.js,tests/unit/provider.test.js,tests/unit/react_agent.test.js,tests/unit/react_agent_checkpoint.test.js,coverage.txt