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.
109 lines
3.0 KiB
Go
109 lines
3.0 KiB
Go
package runtime
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import (
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"os"
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"sort"
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core "agent-system-core"
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)
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// seedMeta 是会话转录旁的播种状态：<transcript>.seed.json。
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// Revision 记录上次播种（或重播种）时的上下文结构指纹；Reminded 记录已经
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// 以提醒形式注入过的提示词模块 id（避免逐轮重复注入同一模块正文）。
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type seedMeta struct {
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Revision string `json:"revision"`
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Reminded []string `json:"reminded,omitempty"`
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}
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func seedMetaPath(transcriptPath string) string {
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return transcriptPath + ".seed.json"
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}
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func readSeedMeta(transcriptPath string) *seedMeta {
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raw, err := os.ReadFile(seedMetaPath(transcriptPath))
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if err != nil {
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return nil
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}
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var m seedMeta
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if json.Unmarshal(raw, &m) != nil || m.Revision == "" {
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return nil
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}
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return &m
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}
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func writeSeedMeta(transcriptPath string, m seedMeta) {
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raw, err := json.Marshal(m)
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if err != nil {
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return
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}
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_ = os.WriteFile(seedMetaPath(transcriptPath), raw, 0o644)
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}
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// contextRevision 是「结构分歧指纹」：只随会话结构的显式改写变化——
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// 消息排除（excluded）、变体组选择（regenerate/候选切换）。正常的追加
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// （新的一轮）不改变指纹。指纹变化 ⇒ 转录与消息库已分歧 ⇒ 重播种转录。
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func contextRevision(history []core.Message) string {
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groups := map[string]int{}
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var excluded []string
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for _, m := range history {
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if m.Excluded {
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excluded = append(excluded, string(m.ID))
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}
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if m.VariantGroup != "" && !m.Excluded && m.VariantIndex > groups[m.VariantGroup] {
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groups[m.VariantGroup] = m.VariantIndex
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}
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}
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sort.Strings(excluded)
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keys := make([]string, 0, len(groups))
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for g := range groups {
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keys = append(keys, g)
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}
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sort.Strings(keys)
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h := sha256.New()
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for _, id := range excluded {
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h.Write([]byte("x" + id + ";"))
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}
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for _, g := range keys {
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h.Write([]byte(g + "=" + string(rune('0'+groups[g])) + ";"))
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}
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return hex.EncodeToString(h.Sum(nil))[:16]
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}
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// resetTranscript 丢弃现有转录（分歧重播种）。Store 是无状态句柄
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// （每次操作按路径开文件），删除文件即可；旁挂 meta 一并清理。
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func resetTranscript(transcriptPath string) error {
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if err := os.Remove(transcriptPath); err != nil && !os.IsNotExist(err) {
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return err
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}
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_ = os.Remove(transcriptPath + ".meta.json")
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return nil
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}
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// updateRemindedModules 把本轮命中的提示词模块并进播种状态，返回此前
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// 未注入过（需要经提醒补正文）的模块 id。播种轮的模块正文已在系统段里，
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// 只登记不注入。
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func updateRemindedModules(transcriptPath string, ids []string) []string {
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meta := readSeedMeta(transcriptPath)
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if meta == nil {
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return nil
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}
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known := map[string]bool{}
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for _, id := range meta.Reminded {
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known[id] = true
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}
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var fresh []string
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for _, id := range ids {
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if !known[id] {
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fresh = append(fresh, id)
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meta.Reminded = append(meta.Reminded, id)
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}
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}
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if len(fresh) > 0 {
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writeSeedMeta(transcriptPath, *meta)
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}
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return fresh
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}
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