feat: release contextual omnichannel customer platform

Add Telegram, WhatsApp and email account management, realtime messaging, contextual multilingual AI, customer intelligence, knowledge workflows, enterprise controls, a unified design system and complete repository documentation.

server/src/ai.js

@@ -7,7 +7,11 @@ function parseJson(text) {
   return JSON.parse(cleaned)
 }
 
-export async function deepseek(system, user, json = false) {
+export async function deepseek(system, user, jsonOrOptions = false) {
+  const options = typeof jsonOrOptions === 'boolean'
+    ? { json: jsonOrOptions }
+    : { ...(jsonOrOptions || {}) }
+  const json = Boolean(options.json)
   const apiKey = process.env.DEEPSEEK_API_KEY
   if (!apiKey) throw Object.assign(new Error('DEEPSEEK_API_KEY 尚未配置'), { status: 503 })
   const endpoint = `${(process.env.DEEPSEEK_BASE_URL || 'https://api.deepseek.com/anthropic').replace(/\/$/, '')}/v1/messages`
@@ -17,7 +21,10 @@ export async function deepseek(system, user, json = false) {
 
   for (let attempt = 0; attempt < attempts; attempt += 1) {
     const controller = new AbortController()
-    const timeout = setTimeout(() => controller.abort(), Number(process.env.AI_TIMEOUT_MS || 45000))
+    const timeout = setTimeout(
+      () => controller.abort(),
+      Number(options.timeoutMs || process.env.AI_TIMEOUT_MS || 30000),
+    )
     try {
       const response = await fetch(endpoint, {
         method: 'POST',
@@ -29,8 +36,11 @@ export async function deepseek(system, user, json = false) {
         },
         body: JSON.stringify({
           model: process.env.DEEPSEEK_MODEL || 'deepseek-v4-flash',
-          max_tokens: Number(process.env.AI_MAX_TOKENS || 4096),
-          temperature: json ? 0 : 0.3,
+          max_tokens: Number(options.maxTokens || process.env.AI_MAX_TOKENS || 4096),
+          temperature: options.temperature ?? (json ? 0 : 0.3),
+          thinking: options.thinking === true
+            ? { type: 'enabled' }
+            : { type: 'disabled' },
           system,
           messages: [{ role: 'user', content: [{ type: 'text', text: prompt }] }],
         }),
@@ -47,6 +57,11 @@ export async function deepseek(system, user, json = false) {
         lastError = error
         prompt = `${user}\n\n上一次响应不是合法 JSON。请重新生成完整结果：只允许输出一个可被 JSON.parse 直接解析的 JSON 值；不得使用 Markdown；字符串中的双引号、换行和反斜杠必须正确转义。`
       }
+    } catch (error) {
+      if (error?.name === 'AbortError') {
+        throw Object.assign(new Error('AI 响应超时，请稍后重试'), { status: 504 })
+      }
+      throw error
     } finally {
       clearTimeout(timeout)
     }
@@ -54,8 +69,8 @@ export async function deepseek(system, user, json = false) {
   throw Object.assign(new Error('AI 返回格式异常，自动重试后仍无法解析'), { status: 502, cause: lastError })
 }
 
-export function conversationContext(messages) {
-  return messages.slice(-80).map((m) => {
+export function conversationContext(messages, limit = 30) {
+  return messages.slice(-limit).map((m) => {
     const role = m.sender === 'agent' ? '坐席' : m.sender === 'system' ? '系统' : '客户'
     const content = m.originalText || m.attachmentName || `[${m.type || '消息'}]`
     const translation = m.translatedText && m.translatedText !== content ? `（译文：${m.translatedText}）` : ''