feat(chat): refactor chat message handling and introduce private messaging support

- Updated `uni_message_sender.py` to allow for private messaging by removing the mandatory group ID and adding user ID handling.
- Enhanced chat history retrieval and clearing functions in `routes.py` and `service.py` to support both group and private chat scenarios.
- Introduced a new `ChatScrollContext` for managing message scrolling and highlighting in the chat UI.
- Created a `ListItemEditorHookFactory` for rendering a rich UI editor for list items in configuration settings, replacing the previous JSON text display.
- Improved message serialization for consistent display in chat history.
- Added detailed logging for chat history operations and error handling.

Co-authored-by: Copilot <copilot@github.com>

dashboard/src/routes/config/bot/hooks/complexFieldHooks.tsx

@@ -1,15 +1,98 @@
 import { createJsonFieldHook } from './JsonFieldHookFactory'
+import { createListItemEditorHook } from './ListItemEditorHookFactory'
 
-export const ChatTalkValueRulesHook = createJsonFieldHook({
-  emptyValue: [],
-  helperText: '复杂对象数组使用 JSON 编辑。每一项对应一个聊天频率规则对象。',
-  placeholder: '[\n  {\n    "platform": "",\n    "item_id": "",\n    "rule_type": "group",\n    "time": "00:00-23:59",\n    "value": 1.0\n  }\n]',
+const ruleTypeLabel = (rule: unknown) => {
+  if (rule === 'private') return '私聊'
+  if (rule === 'group') return '群聊'
+  return rule ? String(rule) : '未指定'
+}
+
+const platformLabel = (item: Record<string, unknown>) => {
+  const platform = typeof item.platform === 'string' ? item.platform.trim() : ''
+  const itemId = typeof item.item_id === 'string' ? item.item_id.trim() : ''
+  if (!platform && !itemId) return '全局'
+  if (!platform) return itemId
+  if (!itemId) return platform
+  return `${platform}:${itemId}`
+}
+
+const truncate = (text: string, max = 32) => {
+  if (text.length <= max) return text
+  return `${text.slice(0, max)}…`
+}
+
+const collectStringList = (value: unknown): string[] => {
+  if (!Array.isArray(value)) return []
+  return value
+    .map((item) => (typeof item === 'string' ? item.trim() : ''))
+    .filter((item) => item.length > 0)
+}
+
+export const ChatTalkValueRulesHook = createListItemEditorHook({
+  addLabel: '添加发言频率规则',
+  helperText: '可按平台/聊天流/时段分别配置发言频率，留空表示全局。',
+  emptyText: '尚未配置任何规则，将使用全局默认频率。',
+  itemTitle: (item) => {
+    const time =
+      typeof item.time === 'string' && item.time.trim()
+        ? item.time.trim()
+        : '全天'
+    const value =
+      typeof item.value === 'number' ? item.value.toFixed(2) : '—'
+    return `${platformLabel(item)} · ${ruleTypeLabel(item.rule_type)} · ${time} · 频率 ${value}`
+  },
 })
 
-export const ExpressionLearningListHook = createJsonFieldHook({
-  emptyValue: [],
-  helperText: '表达学习配置较复杂，使用 JSON 编辑更稳妥。每一项对应一个学习规则。',
-  placeholder: '[\n  {\n    "platform": "",\n    "item_id": "",\n    "rule_type": "group",\n    "use_expression": true,\n    "enable_learning": true,\n    "enable_jargon_learning": true\n  }\n]',
+export const ExpressionLearningListHook = createListItemEditorHook({
+  addLabel: '添加表达学习规则',
+  helperText: '为不同聊天流单独配置是否启用表达/jargon 学习。',
+  emptyText: '尚未配置任何学习规则。',
+  itemTitle: (item) => {
+    const flags: string[] = []
+    if (item.use_expression) flags.push('表达')
+    if (item.enable_learning) flags.push('优化学习')
+    if (item.enable_jargon_learning) flags.push('jargon')
+    const flagText = flags.length ? flags.join(' / ') : '全部关闭'
+    return `${platformLabel(item)} · ${ruleTypeLabel(item.rule_type)} · ${flagText}`
+  },
+})
+
+export const KeywordRulesHook = createListItemEditorHook({
+  addLabel: '添加关键词规则',
+  helperText: '匹配命中后会用 reaction 内容作为额外上下文。keywords 至少填一条，或使用正则模式。',
+  emptyText: '尚未添加任何关键词规则。',
+  itemTitle: (item) => {
+    const keywords = collectStringList(item.keywords)
+    const regex = collectStringList(item.regex)
+    const reaction =
+      typeof item.reaction === 'string' ? item.reaction.trim() : ''
+    const left = keywords.length
+      ? `关键词 ${keywords.length} 条`
+      : regex.length
+        ? `正则 ${regex.length} 条`
+        : '未配置匹配项'
+    const right = reaction ? `→ ${truncate(reaction)}` : '→ 未填写反应'
+    return `${left} ${right}`
+  },
+})
+
+export const RegexRulesHook = createListItemEditorHook({
+  addLabel: '添加正则规则',
+  helperText: '正则模式按 Python 语法编写，命中时把 reaction 作为提示注入。',
+  emptyText: '尚未添加任何正则规则。',
+  itemTitle: (item) => {
+    const regex = collectStringList(item.regex)
+    const keywords = collectStringList(item.keywords)
+    const reaction =
+      typeof item.reaction === 'string' ? item.reaction.trim() : ''
+    const left = regex.length
+      ? `正则 ${regex.length} 条`
+      : keywords.length
+        ? `关键词 ${keywords.length} 条`
+        : '未配置匹配项'
+    const right = reaction ? `→ ${truncate(reaction)}` : '→ 未填写反应'
+    return `${left} ${right}`
+  },
 })
 
 export const ExpressionGroupsHook = createJsonFieldHook({
@@ -24,18 +107,6 @@ export const ExperimentalChatPromptsHook = createJsonFieldHook({
   placeholder: '[\n  {\n    "platform": "qq",\n    "item_id": "123456",\n    "rule_type": "group",\n    "prompt": "这里填写额外提示词"\n  }\n]',
 })
 
-export const KeywordRulesHook = createJsonFieldHook({
-  emptyValue: [],
-  helperText: '关键词规则为对象数组，建议直接编辑 JSON。',
-  placeholder: '[\n  {\n    "keywords": ["早安"],\n    "regex": [],\n    "reaction": "早安呀"\n  }\n]',
-})
-
-export const RegexRulesHook = createJsonFieldHook({
-  emptyValue: [],
-  helperText: '正则规则为对象数组，建议直接编辑 JSON。',
-  placeholder: '[\n  {\n    "keywords": [],\n    "regex": ["https?://[^\\\\s]+"],\n    "reaction": "检测到链接：[0]"\n  }\n]',
-})
-
 export const MCPRootItemsHook = createJsonFieldHook({
   emptyValue: [],
   helperText: 'MCP Roots 条目为对象数组，使用 JSON 编辑。',