fix(bridge): 漏调 collect_info 时补抽线索

bridge/src/lead-intent.js

@@ -14,11 +14,21 @@ const ASK = {
   en: '\n\nBy the way, could you share your company name and a contact email? That way we can set up your wholesale account and follow up on your request.',
 };
 
+// 公司/联系人信号：客户主动报公司名（含法律后缀）、邮箱、电话、联系人等。
+// 命中它但数量单位不规整（如 "500 stainless steel rings"）时，也要触发 lead 抽取兜底，
+// 否则 LLM 漏调 collect_info 时槽位会为空，商机就建不出来。
+const LEAD_SIGNAL_RE = /(@|\+?\d[\d\s().-]{6,}\d|gmbh|b\.?\s?v\.?\b|ltd\b|llc\b|inc\b|sarl|srl\b|limited\b|company|corporation|we are|we're|our company|contact\s*(?:name|person)?\s*[:：]|\u516c\u53f8|\u8054\u7cfb\u4eba|\u91c7\u8d2d|wholesale|bulk)/i;
+
 function hasBuyingIntent(text) {
   const value = String(text || '');
   return PRODUCT_RE.test(value) && QUANTITY_RE.test(value);
 }
 
+function looksLikeLead(text) {
+  const value = String(text || '');
+  return PRODUCT_RE.test(value) && LEAD_SIGNAL_RE.test(value);
+}
+
 function missingLeadContacts(slots = {}, knownEmail = '') {
   const missing = [];
   if (!slots.company) missing.push('company');
@@ -51,4 +61,4 @@ function appendLeadFollowup(reply, lang) {
   return text + buildLeadFollowup(lang);
 }
 
-module.exports = { hasBuyingIntent, missingLeadContacts, detectLanguage, buildLeadFollowup, alreadyAsksForLead, appendLeadFollowup };
+module.exports = { hasBuyingIntent, looksLikeLead, LEAD_SIGNAL_RE, missingLeadContacts, detectLanguage, buildLeadFollowup, alreadyAsksForLead, appendLeadFollowup };