fix: 收敛 Agent 设计器导航与记忆配置

- 增加返回智能体列表入口

- 移除旧消息数压缩参数并保持令牌阈值配置

easyflow-ui-admin/app/src/views/ai/agents/composables/useAgentDesignerState.ts

@@ -76,6 +76,14 @@ function normalizeBindingToolName(binding: AgentToolBinding) {
   return resolveToolName(kind, resource);
 }
 
+function tokenOnlyCompressionParameter(
+  parameter?: Record<string, any>,
+): Record<string, any> {
+  const normalized = { ...parameter };
+  delete normalized.msgThreshold;
+  return normalized;
+}
+
 export function createEmptyAgent(): AgentInfo {
   return {
     name: '未命名智能体',
@@ -88,7 +96,6 @@ export function createEmptyAgent(): AgentInfo {
     memoryConfigJson: {
       compressionParameter: {
         enabled: true,
-        msgThreshold: 12,
         lastKeep: 8,
         minCompressionTokenThreshold: 6000,
       },
@@ -101,10 +108,11 @@ export function createEmptyAgent(): AgentInfo {
 function normalizeAgent(agent?: AgentInfo): AgentInfo {
   const source = agent || {};
   const memoryConfig = source.memoryConfigJson || {};
-  const compressionParameter = memoryConfig.compressionParameter || {};
+  const compressionParameter = tokenOnlyCompressionParameter(
+    memoryConfig.compressionParameter,
+  );
   const defaultCompressionParameter =
     createEmptyAgent().memoryConfigJson?.compressionParameter || {};
-  const legacyMsgThreshold = memoryConfig.maxAttachedMessageCount;
   return {
     ...createEmptyAgent(),
     ...source,
@@ -121,10 +129,6 @@ function normalizeAgent(agent?: AgentInfo): AgentInfo {
       compressionParameter: {
         enabled: true,
         ...compressionParameter,
-        msgThreshold:
-          compressionParameter.msgThreshold ??
-          legacyMsgThreshold ??
-          defaultCompressionParameter.msgThreshold,
         lastKeep:
           compressionParameter.lastKeep ?? defaultCompressionParameter.lastKeep,
         minCompressionTokenThreshold:
@@ -353,9 +357,13 @@ export function useAgentDesignerState() {
 
   function buildPayloadAgent(): AgentInfo {
     const memoryConfigJson = state.agent.memoryConfigJson || {};
-    const compressionParameter = memoryConfigJson.compressionParameter || {};
-    const { maxAttachedMessageCount, ...restMemoryConfigJson } =
-      memoryConfigJson;
+    const compressionParameter = tokenOnlyCompressionParameter(
+      memoryConfigJson.compressionParameter,
+    );
+    const {
+      maxAttachedMessageCount: _maxAttachedMessageCount,
+      ...restMemoryConfigJson
+    } = memoryConfigJson;
     return {
       ...state.agent,
       interactionConfigJson: buildInteractionConfigPayload(