diff --git a/internal/config/config.go b/internal/config/config.go
index 2daa55ab..4cbfe060 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -99,9 +99,6 @@ type MultiAgentConfig struct {
 	// SubAgentUserContextMaxRunes caps user-context supplement for sub-agent task descriptions.
 	// 0 (default) preserves all user turns verbatim; >0 caps total runes; negative disables injection.
 	SubAgentUserContextMaxRunes int `yaml:"sub_agent_user_context_max_runes,omitempty" json:"sub_agent_user_context_max_runes,omitempty"`
-	// UserVerbatimAnchorMaxRunes injects all user turns verbatim into system prompt (survives summarization refresh).
-	// 0 (default) = no cap; >0 = total rune cap; negative disables anchor injection.
-	UserVerbatimAnchorMaxRunes int `yaml:"user_verbatim_anchor_max_runes,omitempty" json:"user_verbatim_anchor_max_runes,omitempty"`
 	// EinoSkills configures CloudWeGo Eino ADK skill middleware + optional local filesystem/execute on DeepAgent.
 	EinoSkills MultiAgentEinoSkillsConfig `yaml:"eino_skills,omitempty" json:"eino_skills,omitempty"`
 	// EinoMiddleware wires optional ADK middleware (patchtoolcalls, toolsearch, plantask, reduction) and Deep extras.
@@ -110,11 +107,6 @@ type MultiAgentConfig struct {
 	EinoCallbacks MultiAgentEinoCallbacksConfig `yaml:"eino_callbacks,omitempty" json:"eino_callbacks,omitempty"`
 }
 
-// UserVerbatimAnchorMaxRunesEffective returns max runes for user verbatim anchor; 0 = unlimited; negative = disabled.
-func (c MultiAgentConfig) UserVerbatimAnchorMaxRunesEffective() int {
-	return c.UserVerbatimAnchorMaxRunes
-}
-
 // SubAgentUserContextMaxRunesEffective returns max runes for sub-agent task supplement; 0 = unlimited; negative = disabled.
 func (c MultiAgentConfig) SubAgentUserContextMaxRunesEffective() int {
 	return c.SubAgentUserContextMaxRunes
diff --git a/internal/handler/project_context.go b/internal/handler/project_context.go
index ca2664bc..cc0e6830 100644
--- a/internal/handler/project_context.go
+++ b/internal/handler/project_context.go
@@ -7,7 +7,8 @@ import (
 	"go.uber.org/zap"
 )
 
-// agentSessionContextBlock 注入会话工作目录、项目黑板与用户原文锚点（用于 system prompt 追加块）。
+// agentSessionContextBlock 注入会话工作目录与项目黑板（用于 system prompt 追加块）。
+// 用户输入由 message history 承载；压缩后由 summarization 摘要指令保留关键约束。
 func (h *AgentHandler) agentSessionContextBlock(conversationID string) string {
 	var parts []string
 	if ws := h.buildWorkspaceBlock(conversationID); ws != "" {
@@ -16,9 +17,6 @@ func (h *AgentHandler) agentSessionContextBlock(conversationID string) string {
 	if bb := h.projectBlackboardBlock(conversationID); bb != "" {
 		parts = append(parts, bb)
 	}
-	if uv := h.userVerbatimAnchorBlock(conversationID); uv != "" {
-		parts = append(parts, uv)
-	}
 	return strings.Join(parts, "\n\n")
 }
 
@@ -70,29 +68,6 @@ func (h *AgentHandler) projectBlackboardBlock(conversationID string) string {
 	return strings.TrimSpace(block)
 }
 
-// userVerbatimAnchorBlock 从 messages 表构建用户各轮原文锚点（压缩后仍由 summarization Finalize 刷新）。
-func (h *AgentHandler) userVerbatimAnchorBlock(conversationID string) string {
-	if h == nil || h.db == nil || h.config == nil {
-		return ""
-	}
-	conversationID = strings.TrimSpace(conversationID)
-	if conversationID == "" {
-		return ""
-	}
-	maxRunes := h.config.MultiAgent.UserVerbatimAnchorMaxRunesEffective()
-	if maxRunes < 0 {
-		return ""
-	}
-	msgs, err := h.db.GetMessages(conversationID)
-	if err != nil {
-		if h.logger != nil {
-			h.logger.Warn("构建用户原文锚点失败", zap.String("conversationId", conversationID), zap.Error(err))
-		}
-		return ""
-	}
-	return project.BuildUserVerbatimAnchorBlockFromMessages(msgs, maxRunes)
-}
-
 // conversationProjectID 返回对话绑定的项目 ID；未绑定或查询失败时返回空字符串。
 func (h *AgentHandler) conversationProjectID(conversationID string) string {
 	if h == nil || h.db == nil {