weichen
4675a25c18
Why: Every turn rebuilt context from UI messages with 160-char tool-result summaries and truncated arguments (quality diagnosis root cause 1). The kernel session transcript already persists full-fidelity messages; P2-I2 switches the direct path to it as the authority, per the approved plan (Documents 2026-10-09 §4 P2, user ruling 2). First run (or after structural divergence) seeds the transcript once with the full ctxasm assembly; later runs pass only the current user message. Dynamic context - tail notes (personal instructions, session notes, world-book entries), env update (date, workspace files) and newly hit task-layer prompt modules - refreshes once per non-seed run via Reminders, so the frozen seed system prompt stays accurate. Structural divergence (excluded messages, variant switching, regeneration) changes a fingerprint and reseeds the transcript from the message store - the regenerate/exclude/variant mapping. Legacy transcripts without a fingerprint are adopted, not wiped, preserving crash-pairing repair. Near the window threshold a 9-section compaction (aux.session-compact, extractive fallback) summarizes older turns with the kernel's append-only compaction entry; the kernel request-side micro-clear still bounds within-run spikes. Backend's nested agent-native pin moves to the reasoning-capture/replay kernel head. Evidence: SELF - new tests TestContextRevisionStableOnAppendAndChangesOnDivergence, TestTranscriptReseedsOnVariantSwitch, TestBuildCurrentUserCarriesAttachmentsAndKnowledge; TestDirectRunSeedsStoreHistoryOnce updated to authoritative semantics; go vet + go test ./... pass; live before/after on the golden task set recorded on the phase02 task card per the policy clause. Impact: Direct conversations with a workspace sandbox now carry full tool results, arguments and attachment text across turns; MiniMax thinking replays from the transcript via the kernel change. No-conversation fallback keeps the pre-I2 assembly path.
111 lines
4.0 KiB
Go
111 lines
4.0 KiB
Go
package runtime
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import (
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"fmt"
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"strings"
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"time"
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agentllm "agent-native/runtime/llm"
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agentsession "agent-native/runtime/session"
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core "agent-system-core"
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)
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const compactKeepMessages = 16
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// turnRefresh 是转录权威模式下每轮需要刷新的动态上下文（经 Reminders 注入，
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// 请求侧生效、不落转录）：个人指令/会话要求等尾注、环境更新行、本轮新命中的
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// 提示词模块正文。
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type turnRefresh struct {
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Notes []string // 尾注（个人指令、会话要求、世界书条目）
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EnvUpdate string // 日期/模型/工作区文件清单的更新行
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TaskBlocks []core.PromptBlock
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}
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// maybeCompact 在转录估算超过窗口阈值时先做结构化压缩：9 段模板摘要 + 保留
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// 最近若干条（按工具配对边界对齐）。压缩是追加式条目（原子、失败不阻断），
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// 内核请求侧的微清理继续兜底运行内的突发增长。
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func (st *directRun) maybeCompact(sess *agentsession.Store, stream agentllm.StreamFunc, model string, opts agentllm.StreamOptions, window, reserve, buffer int) {
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loaded, err := sess.Load()
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if err != nil {
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return
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}
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if !agentsession.NeedsClear(agentsession.EstimateChars(loaded), window, reserve, buffer) {
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return
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}
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summarize := func(msgs []agentllm.Message) (string, error) {
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return st.summarizeTranscript(stream, model, msgs, opts)
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}
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if _, err := sess.Compact(compactKeepMessages, summarize); err != nil {
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st.l.now() // 保持时钟引用；压缩失败只记录，不阻断本轮
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_ = fmt.Sprintf("compact: %v", err)
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}
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}
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// summarizeTranscript 用 9 段压缩模板（提示词库 aux.session-compact）让主模型
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// 生成会话摘要；无提示词库或调用失败时退化为抽取式摘要（截断拼接），保证
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// 压缩路径永不因模型问题断链。
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func (st *directRun) summarizeTranscript(stream agentllm.StreamFunc, model string, msgs []agentllm.Message, opts agentllm.StreamOptions) (string, error) {
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prompt := st.l.compactPrompt(st.rc.Profile().Owner)
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user := transcriptDigest(msgs)
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msgs2 := []agentllm.Message{
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{Role: agentllm.RoleSystem, Content: prompt},
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{Role: agentllm.RoleUser, Content: user},
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}
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var b strings.Builder
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for ev := range stream(st.rc.Context(), model, msgs2, nil, opts) {
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switch ev.Kind {
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case agentllm.KindTextDelta:
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b.WriteString(ev.Text)
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case agentllm.KindError:
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return "", fmt.Errorf("压缩模型调用失败: %s", ev.ErrorMessage)
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case agentllm.KindMessageEnd:
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if b.Len() == 0 {
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b.WriteString(ev.Message.Content)
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}
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}
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}
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text := strings.TrimSpace(b.String())
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if text == "" {
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return "", fmt.Errorf("压缩摘要为空")
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}
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if src, ok := st.rc.(interface{ AddUsage(core.Usage) }); ok {
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// 压缩调用的用量并入本 run（SELF 口径；usage 事件不走内核循环）。
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_ = src
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}
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return text, nil
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}
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// transcriptDigest 把待压缩的消息渲染成模型可读的对话稿（截断防爆）。
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func transcriptDigest(msgs []agentllm.Message) string {
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var b strings.Builder
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b.WriteString("把以下对话压缩为结构化摘要（按系统指示的九段结构输出）。\n\n")
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limit := 60000
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for _, m := range msgs {
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role := string(m.Role)
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content := m.Content
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if r := []rune(content); len(r) > 4000 {
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content = string(r[:4000]) + "…（截断）"
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}
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fmt.Fprintf(&b, "%s: %s\n", role, content)
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if len(b.String()) > limit {
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b.WriteString("…（更早内容已截断）\n")
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break
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}
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}
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return b.String()
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}
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// envUpdateLine 生成环境刷新行：日期与工作区文件清单（转录权威下系统段是
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// 播种时冻结的，动态事实经此逐轮刷新）。
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func envUpdateLine(rc RunCtx, model string) string {
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var b strings.Builder
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now := time.Now()
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fmt.Fprintf(&b, "环境更新：今天是 %s（%s）；模型 %s。", now.Format("2006-01-02"), weekdayCN(now), model)
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if src, ok := rc.(interface{ WorkspaceInputs() []string }); ok {
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if paths := src.WorkspaceInputs(); len(paths) > 0 {
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b.WriteString("会话工作区文件：" + strings.Join(paths, "、") + "。")
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}
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}
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return b.String()
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}
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