diff --git a/agent/tools.go b/agent/tools.go
index 621b27c..c9b4350 100644
--- a/agent/tools.go
+++ b/agent/tools.go
@@ -419,8 +419,7 @@ func (t *ToolSet) graphOverviewData() map[string]any {
 	// (below), not the flat recent_* lists. `covered` maps member id → its digest id.
 	// §6 render-time revival check: a covered member that has become hot again (a new
 	// intent derived from it) must reappear this round — so `hidden` folds a member out
-	// only when it is covered AND still cold. covered_members (built from hidden) lets a
-	// parents/yields id pointing into a live fold stay resolvable (§6.5 dangling lineage).
+	// only when it is covered AND still cold.
 	covered, _ := t.ts.CoveredMembers()
 	// Hot set at render time serves two §6 needs: (1) a covered member that revived
 	// (now hot) must reappear this round; (2) the 60-cap must never truncate hot
@@ -466,58 +465,16 @@ func (t *ToolSet) graphOverviewData() map[string]any {
 	out["facts"] = len(factNodes)                      // 探索事实/结论数（含否定结论）
 	// findings 是任务里最高价值的产物、单任务通常也不多 → 直接全量带进概览（不像 facts 那样
 	// 只给最近窗口），让 planner 每轮判目标时一眼看全所有确认漏洞，无需再调 list_findings。
-	// 每条只留 {id, summary, evidence?, from_intent?, assets?}：evidence 是 report_finding 的
-	// PoC 文本（payload.evidence.poc）；from_intent 是产生本漏洞的意图；assets 直接给受影响资产
-	// 的可读内容（url/域名/ip:port 等，不再是裸 id）——锚定关系存于 exploration_anchors、经 findings
-	// 表回填。vulnclass/severity/state 等仍可用 list_findings / node_detail(id) 取。
-	var findingMeta map[int64]db.FindingMeta // node_id -> 锚定资产等；仅任务上下文可查
-	assetByID := map[int64]*db.Asset{}
-	if t.as != nil && t.taskID > 0 {
-		findingMeta, _ = t.as.FindingMetaByNodeID(t.taskID)
-		idSet := map[int64]struct{}{}
-		for _, meta := range findingMeta {
-			for _, aid := range meta.AssetIDs {
-				idSet[aid] = struct{}{}
-			}
-		}
-		if len(idSet) > 0 {
-			ids := make([]int64, 0, len(idSet))
-			for aid := range idSet {
-				ids = append(ids, aid)
-			}
-			if assets, err := t.as.GetByIDs(ids); err == nil {
-				for _, a := range assets {
-					assetByID[a.ID] = a
-				}
-			}
-		}
-	}
+	// 每条只留 {id, summary, from_intent?}：from_intent 是产生本漏洞的意图。
+	// evidence/assets/vulnclass/severity/state 等仍可用 list_findings / node_detail(id) 取。
 	findingList := make([]map[string]any, 0, len(vulnNodes))
 	for _, n := range vulnNodes {
 		var fp map[string]any
 		_ = json.Unmarshal(n.Payload, &fp)
 		m := map[string]any{"id": n.ID, "summary": fp["summary"]}
-		if ev, ok := fp["evidence"].(map[string]any); ok {
-			if poc, ok := ev["poc"].(string); ok && poc != "" {
-				m["evidence"] = poc
-			}
-		}
 		if from := factFrom[n.ID]; from > 0 {
 			m["from_intent"] = from // 本漏洞由哪个意图产生
 		}
-		if meta, ok := findingMeta[n.ID]; ok && len(meta.AssetIDs) > 0 {
-			assets := make([]string, 0, len(meta.AssetIDs))
-			for _, aid := range meta.AssetIDs {
-				if a := assetByID[aid]; a != nil {
-					if v := assetValue(a); v != "" {
-						assets = append(assets, v)
-						continue
-					}
-				}
-				assets = append(assets, fmt.Sprintf("#%d", aid)) // 资产已删/查不到 → 退回 id 标记，别丢信息
-			}
-			m["assets"] = assets // 受影响资产的可读内容
-		}
 		findingList = append(findingList, m)
 	}
 	out["finding_list"] = findingList
@@ -568,23 +525,9 @@ func (t *ToolSet) graphOverviewData() map[string]any {
 		compactIntents(doneHot, parentsOf, yieldsOf),
 		compactIntents(doneCold[:keepColdDone], parentsOf, yieldsOf)...)
 	out["recent_facts"] = append(recentFactsHot, recentFactsCold[:keepColdFacts]...) // {id, summary, from_intent, confidence?}；详情用 node_detail(id)
-	// cold-digest §6.1/§6.2: the folded cold region + the per-asset directory that
-	// collapses independent directions, plus the dangling-lineage resolver map.
-	if cds, cidx := t.coldDigestOverview(); len(cds) > 0 {
+	// cold-digest §6.1: the folded cold region as flat digest bodies.
+	if cds := activeDigestBodies(t.ts); len(cds) > 0 {
 		out["cold_digests"] = cds // [{id, body, member_count}] —— 直接读 body (§6.1)
-		out["cold_index"] = cidx  // [{asset, asset_id, digest_ids}] —— 按资产收敛方向 (§6.2)
-	}
-	if len(covered) > 0 {
-		cm := make(map[string]int64, len(covered))
-		for member, dig := range covered {
-			if hotAtRender[member] {
-				continue // revived → shown live this round, not a dangling folded id
-			}
-			cm[strconv.FormatInt(member, 10)] = dig
-		}
-		if len(cm) > 0 {
-			out["covered_members"] = cm // 悬空血缘 id → 它属于哪个 digest；用 expand_digest 展开 (§6.5)
-		}
 	}
 	// the original task (root) so the planner always has it, not just the
 	// decomposed goals.
@@ -597,9 +540,9 @@ func (t *ToolSet) graphOverviewData() map[string]any {
 	out["related_tasks"] = t.relatedTaskOverviews()
 	// coverage：粗略的资产测试覆盖度参考——范围(task_scope)内的资产里，被 fact 碰过的
 	// 占比 + by_type(按类型的 总数/已测)。要看未测的具体资产由 agent 按需调 list_untested_assets 自行判断。仅任务上下文有。
-	// 资产覆盖度功能关闭时(coverageDisabled)：只保留 scope/hosts(范围边界与目标主机的
-	// 感知信息，company 关联经由 scope 在此浮现)，丢弃 denominator/tested/pct/by_type/note
-	// 等覆盖度度量，避免污染上下文、也不诱导已隐藏的 add_task_scope/list_untested_assets。
+	// 资产覆盖度功能关闭时(coverageDisabled)：只保留 host_count(目标主机数的感知信息)，
+	// 丢弃 denominator/tested/pct/by_type/note 等覆盖度度量，避免污染上下文、也不诱导
+	// 已隐藏的 add_task_scope/list_untested_assets。
 	if t.as != nil && t.ts != nil && t.taskID > 0 {
 		{
 			m := map[string]any{}
@@ -617,65 +560,6 @@ func (t *ToolSet) graphOverviewData() map[string]any {
 					}
 				}
 			}
-			// scope：当前测试范围的根资产（task_scope 原始行），让 agent 知道这个任务到底
-			// 圈定了哪些目标（不是全部测试资产，而是范围边界本身）。覆盖度开关无关，始终提供。
-			if rows, err := t.as.ListTaskScopeWithSources(t.taskID); err == nil && len(rows) > 0 {
-				scope := make([]map[string]any, 0, len(rows))
-				for _, r := range rows {
-					e := map[string]any{"kind": r.Kind, "source": r.Source, "task_id": r.TaskID}
-					if r.TaskID != t.taskID {
-						inheritedMap(e, r.TaskID)
-					}
-					switch {
-					case r.Domain != "":
-						e["value"] = r.Domain
-					case r.Net != "":
-						e["value"] = r.Net
-					case r.Value != "":
-						e["value"] = r.Value
-					case r.CompanyID != nil:
-						e["company_id"] = *r.CompanyID
-						if t.cs != nil {
-							if company, err := t.cs.GetCompany(*r.CompanyID); err == nil && company != nil {
-								e["company_name"] = company.Name
-							}
-							if rules, err := t.cs.GetScope(*r.CompanyID); err == nil {
-								keywords := make([]string, 0)
-								companyScope := make([]map[string]any, 0, len(rules))
-								for _, rule := range rules {
-									value := rule.Raw
-									if value == "" {
-										switch rule.Kind {
-										case "domain":
-											value = rule.Domain
-										case "ip", "cidr":
-											value = rule.Net
-										default:
-											value = rule.Value
-										}
-									}
-									entry := map[string]any{"kind": rule.Kind, "value": value}
-									if rule.Reason != "" {
-										entry["reason"] = rule.Reason
-									}
-									companyScope = append(companyScope, entry)
-									if rule.Kind == "keyword" && rule.Raw != "" {
-										keywords = append(keywords, rule.Raw)
-									}
-								}
-								if len(companyScope) > 0 {
-									e["company_scope"] = companyScope
-								}
-								if len(keywords) > 0 {
-									e["company_keywords"] = keywords
-								}
-							}
-						}
-					}
-					scope = append(scope, e)
-				}
-				m["scope"] = scope
-			}
 			if hosts, err := t.as.HostsByTaskWithSources(t.taskID); err == nil {
 				// 只给主机总数，不再把 host 列表平铺进 graph_overview（大范围任务里那是每轮
 				// 都重复携带的大量字符串，对规划决策价值有限）；具体主机按需 list_assets 查。
@@ -1014,35 +898,6 @@ func compactNode(n *db.Node) map[string]any {
 	return m
 }
 
-// assetValue distills an asset to its most identifying human-readable string
-// (url / domain / ip[:port] / app / service name) so finding_list can show the
-// affected asset's content inline instead of a bare id. Empty when nothing
-// identifying is set (caller falls back to #id).
-func assetValue(a *db.Asset) string {
-	switch {
-	case a.URL != "":
-		if a.Method != "" {
-			return a.Method + " " + a.URL // 接口：带上 HTTP 方法
-		}
-		return a.URL
-	case a.Domain != "":
-		if a.Port != nil {
-			return fmt.Sprintf("%s:%d", a.Domain, *a.Port)
-		}
-		return a.Domain
-	case a.IP != "":
-		if a.Port != nil {
-			return fmt.Sprintf("%s:%d", a.IP, *a.Port)
-		}
-		return a.IP
-	case a.AppName != "":
-		return a.AppName
-	case a.ServiceName != "":
-		return a.ServiceName
-	}
-	return ""
-}
-
 // compactFinding is compactNode plus the vuln-specific vulnclass/severity.
 func compactFinding(n *db.Node) map[string]any {
 	var p map[string]any
@@ -2196,7 +2051,7 @@ func (t *ToolSet) PlannerTools() []actool.CoreTool {
 	return []actool.CoreTool{
 		t.graphOverview(), t.listFindings(), t.listFacts(), t.nodeDetail(),
 		// cold-digest §6.1: restore folded cold nodes (digest body → members → detail).
-		t.expandDigest(), t.expandIndex(),
+		t.expandDigest(),
 		t.getWorkerOutput(), t.getWorkerTrace(), t.searchAllWorkerTraces(), t.listGoals(), t.addIntent(), t.proveGoal(), t.goalMet(),
 		t.killWorkTool(), t.steerWorkTool(),
 		// report_finding：规划态势研判时若自身已确证漏洞，可直接登记（与 worker 同工具）。
diff --git a/agent/tools_digest.go b/agent/tools_digest.go
index b127bb2..10fcd63 100644
--- a/agent/tools_digest.go
+++ b/agent/tools_digest.go
@@ -2,122 +2,19 @@ package agent
 
 // cold-digest §6: graph_overview folding + the restore tools.
 //
-//	coldDigestOverview — builds the folded cold region for graph_overview:
-//	  cold_digests (flat {id, body, member_count}) and cold_index (§6.2, the
-//	  per-asset directory that collapses independent directions).
-//	expand_digest(id)     — level-1 restore: a digest's member compact list.
-//	expand_index(asset_id) — level-0 restore: the digests under one asset.
+//	activeDigestBodies — builds the folded cold region for graph_overview:
+//	  cold_digests (flat {id, body, member_count}).
+//	expand_digest(id)  — level-1 restore: a digest's member compact list.
 
 import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"sort"
 
 	"github.com/Autumn-27/artex/db"
 	actool "github.com/Autumn-27/norma/tool"
 )
 
-// coldDigestOverview returns the folded cold region for graph_overview: the flat
-// digest bodies and the asset-grouped index (§6.1/§6.2). covered is unused here
-// (kept for symmetry with the caller's coverage computation).
-func (t *ToolSet) coldDigestOverview() (digests []map[string]any, index []map[string]any) {
-	ads, err := t.ts.ActiveDigests()
-	if err != nil || len(ads) == 0 {
-		return nil, nil
-	}
-	memByDigest := map[int64][]int64{}
-	var allMembers []int64
-	for _, d := range ads {
-		ms, _ := t.ts.DigestMembers(d.ID)
-		memByDigest[d.ID] = ms
-		allMembers = append(allMembers, ms...)
-	}
-	assetsByNode, _ := t.ts.NodeAssets(allMembers)
-
-	digests = make([]map[string]any, 0, len(ads))
-	for _, d := range ads {
-		var p struct {
-			Body string `json:"body"`
-		}
-		_ = json.Unmarshal(d.Payload, &p)
-		digests = append(digests, map[string]any{
-			"id":           d.ID,
-			"body":         p.Body,
-			"member_count": len(memByDigest[d.ID]),
-		})
-	}
-
-	// index (§6.2): asset → digests. Each digest lands in EXACTLY ONE bucket — its
-	// representative asset = the asset anchored on the most of its members (mode;
-	// tie-break lowest id). This is what makes the index converge: bucketing a digest
-	// into every asset its members touch would duplicate it across dozens of buckets
-	// and blow up the top-level count instead of shrinking it (asset_ids are fine-
-	// grained — a real task has ~144 of them). A digest whose members anchor no asset
-	// falls into the 0 bucket ("(未锚定资产)").
-	byAsset := map[int64]map[int64]bool{} // asset id → set of digest ids
-	assetSet := map[int64]bool{}
-	for dID, ms := range memByDigest {
-		counts := map[int64]int{}
-		for _, m := range ms {
-			for _, a := range assetsByNode[m] {
-				counts[a]++
-			}
-		}
-		rep, best := int64(0), 0
-		for a, c := range counts {
-			if c > best || (c == best && (rep == 0 || a < rep)) {
-				rep, best = a, c
-			}
-		}
-		if byAsset[rep] == nil {
-			byAsset[rep] = map[int64]bool{}
-		}
-		byAsset[rep][dID] = true
-		if rep != 0 {
-			assetSet[rep] = true
-		}
-	}
-	labels := map[int64]string{}
-	if t.as != nil && len(assetSet) > 0 {
-		ids := make([]int64, 0, len(assetSet))
-		for a := range assetSet {
-			ids = append(ids, a)
-		}
-		if assets, err := t.as.GetByIDs(ids); err == nil {
-			for _, a := range assets {
-				if v := assetValue(a); v != "" {
-					labels[a.ID] = v
-				}
-			}
-		}
-	}
-	index = make([]map[string]any, 0, len(byAsset))
-	for a, dset := range byAsset {
-		dids := make([]int64, 0, len(dset))
-		for d := range dset {
-			dids = append(dids, d)
-		}
-		sort.Slice(dids, func(i, j int) bool { return dids[i] < dids[j] })
-		entry := map[string]any{"digest_ids": dids}
-		if a == 0 {
-			entry["asset"] = "(未锚定资产)"
-		} else {
-			entry["asset_id"] = a
-			if l := labels[a]; l != "" {
-				entry["asset"] = l
-			} else {
-				entry["asset"] = fmt.Sprintf("#%d", a)
-			}
-		}
-		index = append(index, entry)
-	}
-	sort.Slice(index, func(i, j int) bool {
-		return fmt.Sprint(index[i]["asset"]) < fmt.Sprint(index[j]["asset"])
-	})
-	return digests, index
-}
-
 // digestMemberEntry builds the compact per-member view expand_digest returns —
 // same shape as recent_facts / recent_done_intents (§6.1 middle level). store is
 // the digest's OWNING store (the current task, or a read-only source task §2).
@@ -200,7 +97,7 @@ func (t *ToolSet) expandDigest() actool.CoreTool {
 		map[string]any{
 			"type": "object",
 			"properties": map[string]any{
-				"id": map[string]any{"type": "integer", "description": "digest 节点 id（来自概览 cold_digests / cold_index / covered_members）"},
+				"id": map[string]any{"type": "integer", "description": "digest 节点 id（来自概览 cold_digests）"},
 			},
 			"required": []any{"id"},
 		},
@@ -240,60 +137,3 @@ func (t *ToolSet) expandDigest() actool.CoreTool {
 			return jsonResult(out)
 		})
 }
-
-// expandIndex returns the active digests under one asset (§6.2 level-0), each
-// with its body + member count — so the planner can drill an asset directory down
-// to its directions without reading every digest globally.
-func (t *ToolSet) expandIndex() actool.CoreTool {
-	return t.writeExpTool("expand_index",
-		"展开冷区某个资产条目（来自概览 cold_index）：返回该资产名下的 cold digest 列表（id/body/member_count）。再往下看某个 digest 的成员用 expand_digest(id)。",
-		map[string]any{
-			"type": "object",
-			"properties": map[string]any{
-				"asset_id": map[string]any{"type": "integer", "description": "资产 id（来自概览 cold_index 的 asset_id；传 0 或省略取未锚定资产桶）"},
-			},
-		},
-		func(ctx context.Context, raw json.RawMessage) (actool.Result, error) {
-			var in struct {
-				AssetID int64 `json:"asset_id"`
-			}
-			_ = json.Unmarshal(raw, &in)
-			ads, _ := t.ts.ActiveDigests()
-			out := make([]map[string]any, 0)
-			for _, d := range ads {
-				members, _ := t.ts.DigestMembers(d.ID)
-				assetsByNode, _ := t.ts.NodeAssets(members)
-				match := in.AssetID == 0
-				for _, m := range members {
-					for _, a := range assetsByNode[m] {
-						if a == in.AssetID {
-							match = true
-						}
-					}
-					if match {
-						break
-					}
-				}
-				// asset_id==0 means "unanchored bucket": include only digests with no asset.
-				if in.AssetID == 0 {
-					anchored := false
-					for _, m := range members {
-						if len(assetsByNode[m]) > 0 {
-							anchored = true
-							break
-						}
-					}
-					match = !anchored
-				}
-				if !match {
-					continue
-				}
-				var p struct {
-					Body string `json:"body"`
-				}
-				_ = json.Unmarshal(d.Payload, &p)
-				out = append(out, map[string]any{"id": d.ID, "body": p.Body, "member_count": len(members)})
-			}
-			return jsonResult(map[string]any{"asset_id": in.AssetID, "digests": out})
-		})
-}
diff --git a/agent/tools_insert.go b/agent/tools_insert.go
index 273d55c..dde9eaf 100644
--- a/agent/tools_insert.go
+++ b/agent/tools_insert.go
@@ -664,7 +664,7 @@ func (t *ToolSet) WorkerTools() []actool.CoreTool {
 func (t *ToolSet) MainAgentTools() []actool.CoreTool {
 	return []actool.CoreTool{
 		t.graphOverview(), t.listFindings(), t.listFacts(), t.nodeDetail(),
-		t.expandDigest(), t.expandIndex(), // cold-digest §6.1
+		t.expandDigest(), // cold-digest §6.1
 		t.getWorkerOutput(), t.getWorkerTrace(), t.searchAllWorkerTraces(), t.addHint(), t.addIntent(),
 		// steer_work：人可对某条正在运行的意图(work)实时注入纠偏指令（不打断、不丢进展）。
 		t.steerWorkTool(),