feat: 增加智能体对话体验配置

- 支持欢迎语、猜你想问和输入提示的编辑、草稿预览与发布态展示

- 补充配置校验、发布快照持久化和发布后回显修复

easyflow-ui-admin/app/src/views/ai/agents/interaction-config.ts

@@ -0,0 +1,120 @@
+import type {
+  AgentInfo,
+  AgentInteractionConfig,
+  AgentValidationIssue,
+} from './types';
+
+export const MAX_WELCOME_MESSAGE_LENGTH = 300;
+export const MAX_SUGGESTED_QUESTION_COUNT = 6;
+export const MAX_SUGGESTED_QUESTION_LENGTH = 80;
+export const MAX_INPUT_PLACEHOLDER_LENGTH = 40;
+export const DEFAULT_INPUT_PLACEHOLDER = '输入消息';
+
+export function createEmptyInteractionConfig(): AgentInteractionConfig {
+  return {
+    inputPlaceholder: '',
+    suggestedQuestions: [],
+    welcomeMessage: '',
+  };
+}
+
+export function normalizeInteractionConfig(
+  source?: Partial<AgentInteractionConfig> | Record<string, unknown>,
+): AgentInteractionConfig {
+  return {
+    inputPlaceholder:
+      typeof source?.inputPlaceholder === 'string'
+        ? source.inputPlaceholder
+        : '',
+    suggestedQuestions: Array.isArray(source?.suggestedQuestions)
+      ? source.suggestedQuestions.filter(
+          (question): question is string => typeof question === 'string',
+        )
+      : [],
+    welcomeMessage:
+      typeof source?.welcomeMessage === 'string' ? source.welcomeMessage : '',
+  };
+}
+
+export function buildInteractionConfigPayload(
+  source?: Partial<AgentInteractionConfig> | Record<string, unknown>,
+): AgentInteractionConfig {
+  const normalized = normalizeInteractionConfig(source);
+  return {
+    inputPlaceholder: normalized.inputPlaceholder.trim(),
+    suggestedQuestions: normalized.suggestedQuestions
+      .map((question) => question.trim())
+      .filter(Boolean),
+    welcomeMessage: normalized.welcomeMessage.trim(),
+  };
+}
+
+export function resolveInteractionDisplay(agent?: AgentInfo) {
+  const config = buildInteractionConfigPayload(agent?.interactionConfigJson);
+  const agentName = String(agent?.name || '').trim() || '智能体';
+  return {
+    inputPlaceholder: config.inputPlaceholder || DEFAULT_INPUT_PLACEHOLDER,
+    suggestedQuestions: config.suggestedQuestions,
+    welcomeMessage:
+      config.welcomeMessage || `你好，我是 ${agentName}，有什么可以帮你？`,
+  };
+}
+
+export function validateInteractionConfig(
+  source?: Partial<AgentInteractionConfig> | Record<string, unknown>,
+): AgentValidationIssue[] {
+  const config = normalizeInteractionConfig(source);
+  const issues: AgentValidationIssue[] = [];
+  if (config.welcomeMessage.trim().length > MAX_WELCOME_MESSAGE_LENGTH) {
+    issues.push({
+      field: 'interaction.welcomeMessage',
+      message: '欢迎语不能超过 300 个字符',
+      nodeId: 'agent-base',
+    });
+  }
+  if (/\r|\n/.test(config.inputPlaceholder)) {
+    issues.push({
+      field: 'interaction.inputPlaceholder',
+      message: '输入提示仅支持单行文本',
+      nodeId: 'agent-base',
+    });
+  } else if (
+    config.inputPlaceholder.trim().length > MAX_INPUT_PLACEHOLDER_LENGTH
+  ) {
+    issues.push({
+      field: 'interaction.inputPlaceholder',
+      message: '输入提示不能超过 40 个字符',
+      nodeId: 'agent-base',
+    });
+  }
+
+  const questions = config.suggestedQuestions
+    .map((question, index) => ({ index, value: question.trim() }))
+    .filter((item) => item.value);
+  if (questions.length > MAX_SUGGESTED_QUESTION_COUNT) {
+    issues.push({
+      field: 'interaction.suggestedQuestions',
+      message: '猜你想问最多配置 6 条',
+      nodeId: 'agent-base',
+    });
+  }
+  const seenQuestions = new Set<string>();
+  for (const question of questions) {
+    if (question.value.length > MAX_SUGGESTED_QUESTION_LENGTH) {
+      issues.push({
+        field: `interaction.suggestedQuestions.${question.index}`,
+        message: `第 ${question.index + 1} 条猜你想问不能超过 80 个字符`,
+        nodeId: 'agent-base',
+      });
+    }
+    if (seenQuestions.has(question.value)) {
+      issues.push({
+        field: `interaction.suggestedQuestions.${question.index}`,
+        message: `第 ${question.index + 1} 条猜你想问与已有内容重复`,
+        nodeId: 'agent-base',
+      });
+    }
+    seenQuestions.add(question.value);
+  }
+  return issues;
+}