新增智能体收藏、定时任务必须生成MD校验、问答时间显示及账号绑定的常用提示词

- 智能体支持从广场收藏到「我的」（新增 agent_favorites 表与收藏/取消收藏接口）
- 定时任务新增「必须生成Markdown文件」开关：注入提示词并校验生成的 .md 文件且正文超过100字，否则记为失败（存于 execution_context，无需迁移）
- 聊天问答展示时间（年月日 时分）：问题在右下角、回答在左下角
- 常用提示词改为与账号绑定（新增 user_custom_prompts 表与 /api/user-prompts 接口），仅在首页输入框上方以居中标签 + 轮播展示，齿轮置于最右侧管理

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend-web/src/core/skill-display/display-adapter.ts

@@ -10,6 +10,7 @@ export interface DisplaySourceItem {
   type: string;
   snippet: string;
   source?: string;
+  author?: string;
   time?: string;
   url?: string;
   content?: string;
@@ -25,6 +26,7 @@ export const emptyDisplayConfig = (): SkillDisplayConfig => ({
   summaryField: null,
   contentField: null,
   sourceField: null,
+  authorField: null,
   typeField: null,
   timeField: null,
   scoreField: null,
@@ -43,6 +45,7 @@ const candidateFields: Record<string, string[]> = {
   summaryField: ["summary", "snippet", "content_preview", "description", "abstract"],
   contentField: ["content", "page_content", "text", "content_preview", "body"],
   sourceField: ["source", "source_name", "site", "from", "origin"],
+  authorField: ["author", "authors", "creator", "writer", "byline", "publisher", "owner"],
   typeField: ["type", "category", "source_category", "source1"],
   timeField: ["publish_time", "m_publish", "updatedAt", "createdAt", "date", "time"],
   scoreField: ["relevance_score", "rerank_score", "score", "similarity"],
@@ -107,6 +110,7 @@ export function inferDisplayConfig(samplePayload: unknown, skillName?: string):
     inferred.summaryField = inferred.summaryField || "content_preview";
     inferred.contentField = inferred.contentField || "content_preview";
     inferred.sourceField = inferred.sourceField || "source";
+    inferred.authorField = inferred.authorField || pickField(sample, candidateFields.authorField);
     inferred.typeField = inferred.typeField || "source_category";
     inferred.timeField = inferred.timeField || "publish_time";
     inferred.scoreField = inferred.scoreField || "relevance_score";
@@ -127,6 +131,7 @@ function buildDefaultTableColumns(
     config.titleField,
     config.typeField,
     config.sourceField,
+    config.authorField,
     config.timeField,
     config.scoreField,
   ].filter((field): field is string => !!field);
@@ -141,6 +146,16 @@ function buildDefaultTableColumns(
 
 function stringify(value: unknown, fallback = ""): string {
   if (value === null || value === undefined) return fallback;
+  if (Array.isArray(value)) {
+    const parts = value
+      .map((item) =>
+        typeof item === "string" || typeof item === "number" || typeof item === "boolean"
+          ? String(item).trim()
+          : "",
+      )
+      .filter(Boolean);
+    return parts.length > 0 ? parts.join("、") : fallback;
+  }
   return String(value);
 }
 
@@ -174,6 +189,7 @@ export function normalizeDisplaySources(payload: unknown, config: SkillDisplayCo
       snippet: config.summaryField ? stringify(item[config.summaryField]) : "",
       content: config.contentField ? stringify(item[config.contentField]) : undefined,
       source: config.sourceField ? stringify(item[config.sourceField]) : undefined,
+      author: config.authorField ? stringify(item[config.authorField]) : undefined,
       time: config.timeField ? stringify(item[config.timeField]) : undefined,
       score:
         config.scoreField && typeof item[config.scoreField] === "number"

frontend-web/src/core/skill-display/runtime.ts

@@ -499,6 +499,7 @@ export function normalizeDefaultDisplaySources(payload: unknown): DisplaySourceI
     snippet: item.snippet ?? item.content ?? "",
     content: item.content ?? item.snippet,
     source: item.source,
+    author: item.author,
     time: item.published_date ?? item.publishedDate ?? item.date,
     url: item.url,
     raw: item as unknown as Record<string, unknown>,