fix(backthink): 后台思考静默广播——不再把内部推理泄到聊天思维链 + XML 动作/旁白解析
【静默广播修复(bug:思维链露出 backthink 推理)】 - 根因:LoopThinker.Think 复用同一 loop.Loop 且 loop 全局带 OnStream,backthink 后台思考时 把 [background autonomous reflection] 的 thinking/流式事件广播到前端,被当聊天思维链显示。 - loop/mute_ctx.go:WithMutedBroadcast(ctx) + isMutedBroadcast(ctx)——context 上静默标志。 - loop 四处广播抑制(stream.go 流式 / step.go 静默走非流式 agentStep / request.go capacity 事件 / tools.go tool_execution),静默时跳过 UI 广播,推理照常返回结论。 - thinker.go LoopThinker.Think 用 loop.WithMutedBroadcast(ctx),backthink 不再泄 thinking。 【XML 动作/旁白结构化解析】 - cyrene.yaml systemPrompt 加「表达方式:动作与旁白」——动作 <action>…</action>、 旁白 <narration>…</narration>;克制≤1-2个/段、贴合唤醒态、重要信息不加、朗读正文忽略标签。 - 前端 parseContent.ts:ContentPart[](text/action/narration),非贪婪+反向引用、跨行、非法/ 未闭合兜底纯文本不崩;summarizeContent 供思维导图/状态。 - 前端 renderContent.tsx:action/narration → 灰斜体(mu-text-lo italic)句中原位渲染。 - 应用到 chat.tsx UserBubble/AssistantBubble + messages 各 mode body。 go build/vet/test(loop/backthink)绿 + 前端 tsc/vite 绿。
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@@ -275,14 +275,14 @@ func (l *Loop) invokeOne(ctx context.Context, d *tool.Dispatcher, tc agent.ToolC
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if d == nil {
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return ToolOutcome{Err: fmt.Errorf("no tool dispatcher configured for %q", tc.Name), ErrKind: tool.KindExecution}
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}
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l.emitToolExecution(tc.Name, "start")
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l.emitToolExecution(ctx, tc.Name, "start")
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_, toolSpan := l.span(ctx, "tool."+tc.Name, trace.SpanKindTool)
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result, err := d.Invoke(ctx, tc.Name, tc.Args)
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phase := "end"
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if err != nil {
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phase = "end:error"
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}
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l.emitToolExecution(tc.Name, phase)
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l.emitToolExecution(ctx, tc.Name, phase)
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out := ToolOutcome{Result: result, Err: err, ErrKind: errorKind(err)}
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if err != nil {
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l.spanProp(toolSpan, "error", err.Error())
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@@ -297,9 +297,10 @@ func (l *Loop) invokeOne(ctx context.Context, d *tool.Dispatcher, tc agent.ToolC
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// emitToolExecution forwards a tool_execution_update progress event to the
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// frontend when the loop is on the streaming path (OnStream configured); it is a
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// no-op otherwise. phase is a short label like "start" or "end:error".
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func (l *Loop) emitToolExecution(name, phase string) {
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if l.onStream == nil {
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// no-op otherwise (muted internal passes skip it too). phase is a short label
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// like "start" or "end:error".
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func (l *Loop) emitToolExecution(ctx context.Context, name, phase string) {
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if l.onStream == nil || isMutedBroadcast(ctx) {
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return
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}
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l.onStream(model.StreamEvent{Kind: model.StreamKindToolExecution, Delta: phase + ":" + name})
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