feat(channels): 社交渠道 OAuth 改进 + 集成应用重命名 + AI 流程文档

- Facebook/Instagram/TikTok 渠道 OAuth 授权流程改进
- 新增 oauth/credentialstore 包
- 集成应用 OpenAI 重命名为 OpenAI 兼容 (migration 061)
- 消息生命周期与 AI 流程架构文档
- inbox 管理界面 i18n 更新

frontend/app/javascript/dashboard/components/widgets/ChannelItem.vue

@@ -15,18 +15,6 @@ const props = defineProps({
 
 const emit = defineEmits(['channelItemClick']);
 
-const hasFbConfigured = computed(() => {
-  return window.chatwootConfig?.fbAppId;
-});
-
-const hasInstagramConfigured = computed(() => {
-  return window.chatwootConfig?.instagramAppId;
-});
-
-const hasTiktokConfigured = computed(() => {
-  return window.chatwootConfig?.tiktokAppId;
-});
-
 const isActive = computed(() => {
   const { key } = props.channel;
   if (Object.keys(props.enabledFeatures).length === 0) {
@@ -35,39 +23,18 @@ const isActive = computed(() => {
   if (key === 'website') {
     return props.enabledFeatures.channel_website;
   }
-  if (key === 'facebook') {
-    return props.enabledFeatures.channel_facebook && hasFbConfigured.value;
-  }
   if (key === 'email') {
     return props.enabledFeatures.channel_email;
   }
-
-  if (key === 'instagram') {
-    return (
-      props.enabledFeatures.channel_instagram && hasInstagramConfigured.value
-    );
-  }
-
-  if (key === 'tiktok') {
-    return props.enabledFeatures.channel_tiktok && hasTiktokConfigured.value;
-  }
-
   if (key === 'voice') {
     return props.enabledFeatures.channel_voice;
   }
 
-  return [
-    'website',
-    'twilio',
-    'api',
-    'whatsapp',
-    'sms',
-    'telegram',
-    'line',
-    'instagram',
-    'tiktok',
-    'voice',
-  ].includes(key);
+  // All other channels (facebook, instagram, tiktok, whatsapp, sms, api,
+  // telegram, line, etc.) are always clickable. OAuth credentials (App ID,
+  // API tokens, etc.) are collected per-inbox during the channel setup flow,
+  // not gated by global config.
+  return true;
 });
 
 const isComingSoon = computed(() => {