feat: port quality, escalation, KB version, site-map KB, experiments and metrics

bridge/src/faq-refiner.js

@@ -0,0 +1,26 @@
+'use strict';
+
+// 信息型页面 LLM 提炼成 FAQ（旧 bridge faq/llmRefiner.js 的移植）。
+function createFaqRefiner(llm) {
+  const SYSTEM = `You turn website page content into a clean FAQ knowledge base entry.
+Rules: output 3-8 "### Q: ..." / answer pairs based ONLY on the page content; never invent facts, numbers, or policies; answers 1-4 sentences; English; output only the FAQ body, no code fences.`;
+
+  async function refineToFaq(rawMarkdown, category) {
+    const text = String(rawMarkdown || '').slice(0, 6000);
+    if (!text.trim()) return null;
+    const res = await llm.chat({
+      messages: [
+        { role: 'system', content: SYSTEM },
+        { role: 'user', content: `Page category: ${category || 'general'}\n\nRaw page content:\n${text}` },
+      ],
+      temperature: 0.2,
+      maxTokens: 800,
+    });
+    const faq = String(res.content || '').trim();
+    return faq.includes('### Q:') ? faq : null;
+  }
+
+  return { refineToFaq };
+}
+
+module.exports = { createFaqRefiner };