chore: 更新项目配置和依赖，优化前后端代码

src/utils/api.js

@@ -1,10 +1,6 @@
 import { API_URL } from './config.js'
 import { useSettingsStore } from '../stores/settings'
 
-const API_KEY = 'your-secret-key-here'
-
-let cachedIP = null
-
 function generateRequestId() {
     if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
         return crypto.randomUUID()
@@ -34,7 +30,6 @@ async function sendCancelRequest(cancelUrl, requestId, reason) {
             method: 'POST',
             headers: {
                 'Content-Type': 'application/json',
-                'X-API-Key': API_KEY,
             },
             body: JSON.stringify({
                 request_id: requestId,
@@ -46,20 +41,6 @@ async function sendCancelRequest(cancelUrl, requestId, reason) {
     }
 }
 
-async function getClientIP() {
-    if (cachedIP) return cachedIP
-    try {
-        const controller = new AbortController()
-        setTimeout(() => controller.abort(), 3000)
-        const res = await fetch('https://api.ipify.org?format=json', { signal: controller.signal })
-        const data = await res.json()
-        cachedIP = data.ip
-        return cachedIP
-    } catch {
-        return null
-    }
-}
-
 export async function fetchSuggestion(prefix, suffix, languageId, signal, apiUrl = API_URL) {
     let normalizedLanguageId = 'markdown'
     if (typeof languageId === 'string' && languageId.trim()) {
@@ -89,18 +70,11 @@ export async function fetchSuggestion(prefix, suffix, languageId, signal, apiUrl
 
     try {
         const settings = useSettingsStore()
-        const clientIP = await getClientIP()
         const headers = {
             'Content-Type': 'application/json',
-            'X-API-Key': API_KEY,
             'X-Request-Id': requestId,
         }
 
-        // Only send IP if privacy mode is OFF
-        if (clientIP && !settings.privacyMode) {
-            headers['X-Client-IP'] = clientIP
-        }
-
         const body = {
             prefix,
             suffix,