feat: 优化工作流字段化参数配置

- 开始节点固定 user_input 并区分系统入口与自定义参数

- LLM 与知识库节点切换为字段值加上游引用配置

- 单节点调试改为字段预览与上游引用输入模式

easyflow-ui-admin/packages/tinyflow-ui/src/components/utils/paramToken.ts

@@ -2,6 +2,11 @@ export interface ParameterLike {
   name?: string;
   ref?: string;
   refType?: string;
+  resolved?: boolean;
+  disconnected?: boolean;
+  displayName?: string;
+  formLabel?: string;
+  dataType?: string;
   children?: ParameterLike[];
 }
 
@@ -27,6 +32,9 @@ export type TokenPart =
 export interface ParameterCandidate {
   name: string;
   resolved: boolean;
+  disconnected?: boolean;
+  displayName?: string;
+  dataType?: string;
 }
 
 const TOKEN_PATTERN = /\{\{\s*([^{}]+?)\s*}}/g;
@@ -46,6 +54,10 @@ function isParameterResolved(parameter?: ParameterLike): boolean {
     return false;
   }
 
+  if (typeof parameter.resolved === 'boolean') {
+    return parameter.resolved;
+  }
+
   const refType = (parameter.refType || '').trim();
   if (refType === 'fixed' || refType === 'input') {
     return true;
@@ -65,7 +77,13 @@ export function flattenParameterCandidates(
   const candidates: ParameterCandidate[] = [];
   const indexMap = new Map<string, number>();
 
-  const addCandidate = (name: string, resolved: boolean) => {
+  const addCandidate = (
+    name: string,
+    resolved: boolean,
+    disconnected: boolean,
+    displayName?: string,
+    dataType?: string,
+  ) => {
     const normalized = name.trim();
     if (!normalized) {
       return;
@@ -76,13 +94,26 @@ export function flattenParameterCandidates(
       candidates.push({
         name: normalized,
         resolved,
+        disconnected,
+        displayName: displayName?.trim() || normalized,
+        dataType,
       });
       return;
     }
 
     // 同名参数只要有一个可解析，就视为可解析
+    const existingCandidate = candidates[exists]!;
     if (resolved) {
-      candidates[exists].resolved = true;
+      existingCandidate.resolved = true;
+      existingCandidate.disconnected = false;
+    } else if (disconnected && !existingCandidate.resolved) {
+      existingCandidate.disconnected = true;
+    }
+    if (!existingCandidate.displayName && displayName?.trim()) {
+      existingCandidate.displayName = displayName.trim();
+    }
+    if (!existingCandidate.dataType && dataType) {
+      existingCandidate.dataType = dataType;
     }
   };
 
@@ -99,7 +130,18 @@ export function flattenParameterCandidates(
 
       const currentPath = parentPath ? `${parentPath}.${rawName}` : rawName;
       const currentResolved = inheritedResolved && isParameterResolved(item);
-      addCandidate(currentPath, currentResolved);
+      const currentDisconnected = item?.disconnected === true;
+      const displayName =
+        item?.displayName?.trim() ||
+        item?.formLabel?.trim() ||
+        currentPath;
+      addCandidate(
+        currentPath,
+        currentResolved,
+        currentDisconnected,
+        displayName,
+        item?.dataType,
+      );
 
       if (item.children && item.children.length > 0) {
         walk(item.children, currentPath, currentResolved);