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Re-fetched\n// after TTL or on a 401/invalid-crumb miss in handlePrices.\nlet crumbCache: { cookies: string; crumb: string; ts: number } | null = null;\nconst CRUMB_TTL_MS = 10 * 60 * 1000; // 10 minutes\n\nasync function getYahooCrumb(\n forceRefresh = false,\n): Promise<{ cookies: string; crumb: string } | null> {\n if (\n !forceRefresh && crumbCache &&\n Date.now() - crumbCache.ts < CRUMB_TTL_MS\n ) {\n return { cookies: crumbCache.cookies, crumb: crumbCache.crumb };\n }\n try {\n const r1 = await fetch(\"https://fc.yahoo.com\", {\n headers: { \"User-Agent\": UA },\n redirect: \"follow\",\n });\n const raw = r1.headers.get(\"set-cookie\") ?? \"\";\n const cookieStr = raw.split(\",\").map((c: string) => c.trim().split(\";\")[0])\n .join(\"; \");\n const r2 = await fetch(\n \"https://query1.finance.yahoo.com/v1/test/getcrumb\",\n { headers: { \"User-Agent\": UA, \"Cookie\": cookieStr } },\n );\n if (!r2.ok) return null;\n const crumb = (await r2.text()).trim();\n if (!crumb || crumb.includes(\"<\")) return null;\n crumbCache = { cookies: cookieStr, crumb, ts: Date.now() };\n return { cookies: cookieStr, crumb };\n } catch {\n return null;\n }\n}\n\n// ── PRICES ───────────────────────────────────────────────────────\nasync function handlePrices(symbols: string): Promise {\n const fields =\n \"regularMarketPrice,regularMarketChange,regularMarketChangePercent,shortName,fiftyTwoWeekHigh,fiftyTwoWeekLow,regularMarketVolume,averageDailyVolume3Month,fiftyDayAverage,twoHundredDayAverage,trailingPE,forwardPE,beta,trailingAnnualDividendYield\";\n let auth = await getYahooCrumb();\n let lastErr = \"\";\n\n for (let attempt = 0; attempt < 2; attempt++) {\n const crumbParam = auth ? `&crumb=${encodeURIComponent(auth.crumb)}` : \"\";\n const headers: Record = {\n \"User-Agent\": UA,\n \"Accept\": \"application/json\",\n \"Origin\": \"https://finance.yahoo.com\",\n \"Referer\": \"https://finance.yahoo.com/\",\n };\n if (auth) headers[\"Cookie\"] = auth.cookies;\n\n for (\n const base of [\n \"https://query1.finance.yahoo.com\",\n \"https://query2.finance.yahoo.com\",\n ]\n ) {\n try {\n const url = `${base}/v7/finance/quote?symbols=${\n encodeURIComponent(symbols)\n }&fields=${fields}${crumbParam}`;\n const res = await fetch(url, { headers });\n if (res.status === 401 || res.status === 403) {\n lastErr = \"HTTP \" + res.status + \" (crumb)\";\n break; // stale crumb — refresh and retry whole loop\n }\n if (!res.ok) {\n lastErr = \"HTTP \" + res.status;\n continue;\n }\n const data = await res.json();\n const results = data?.quoteResponse?.result ?? [];\n if (!results.length) {\n lastErr = \"0 results\";\n continue;\n }\n const quotes: Record = {};\n for (const q of results) {\n quotes[q.symbol] = {\n price: q.regularMarketPrice,\n change: q.regularMarketChange,\n chgPct: q.regularMarketChangePercent,\n name: q.shortName ?? q.symbol,\n wkHigh: q.fiftyTwoWeekHigh ?? null,\n wkLow: q.fiftyTwoWeekLow ?? null,\n vol: q.regularMarketVolume ?? null,\n avgVol: q.averageDailyVolume3Month ?? null,\n ma50: q.fiftyDayAverage ?? null,\n ma200: q.twoHundredDayAverage ?? null,\n peT: q.trailingPE ?? null,\n peF: q.forwardPE ?? null,\n beta: q.beta ?? null,\n divYield: q.trailingAnnualDividendYield ?? null,\n };\n }\n return ok({\n ok: true,\n quotes,\n source: \"yahoo\",\n fetched: results.length,\n ts: new Date().toISOString(),\n });\n } catch (e: unknown) {\n lastErr = String(e);\n }\n }\n // first pass failed on auth — force a fresh crumb and try once more\n if (attempt === 0) {\n crumbCache = null;\n auth = await getYahooCrumb(true);\n }\n }\n\n // Stooq fallback (prices only — no 52wk/volume, signals degrade gracefully)\n const stooqResult = await fetchFromStooq(symbols);\n if (stooqResult) {\n return ok({\n ok: true,\n quotes: stooqResult,\n source: \"stooq\",\n degraded: true,\n fetched: Object.keys(stooqResult).length,\n ts: new Date().toISOString(),\n });\n }\n\n return ok(\n { ok: false, error: `All price sources failed. Last: ${lastErr}` },\n 502,\n );\n}\n\nfunction toStooq(y: string): string | null {\n // Stooq carries TSX-listed names but NOT Cboe Canada (.NE) CDRs.\n // Returning null signals \"skip this symbol\" so we never serve a wrong match.\n if (y.endsWith(\".NE\")) return null; // CDRs unavailable on Stooq\n if (y.endsWith(\".TO\")) return y.replace(\".TO\", \".CA\");\n if (!y.includes(\".\")) return y + \".US\";\n return y;\n}\n\nasync function fetchFromStooq(\n yahooSymbols: string,\n): Promise | null> {\n try {\n const syms = yahooSymbols.split(\",\").map((s) => s.trim());\n // Keep only symbols Stooq can serve; remember the Yahoo→Stooq pairing.\n const pairs: Array<{ yahoo: string; stooq: string }> = [];\n for (const y of syms) {\n const s = toStooq(y);\n if (s) pairs.push({ yahoo: y, stooq: s });\n }\n if (!pairs.length) return null; // e.g. an all-CDR request — nothing to fall back to\n const res = await fetch(\n `https://stooq.com/q/l/?s=${\n encodeURIComponent(pairs.map((p) => p.stooq).join(\",\"))\n }&f=sd2c&e=json`,\n { headers: { \"User-Agent\": \"Mozilla/5.0\" } },\n );\n if (!res.ok) return null;\n const data = await res.json();\n const rows: Array<{ Symbol: string; Close: string }> = data?.symbols ?? [];\n if (!rows.length) return null;\n const quotes: Record = {};\n for (let i = 0; i < pairs.length; i++) {\n const r = rows[i];\n if (!r) continue;\n const price = parseFloat(r.Close);\n if (!isNaN(price) && price > 0) {\n quotes[pairs[i].yahoo] = {\n price,\n change: null,\n chgPct: null,\n name: pairs[i].yahoo,\n wkHigh: null,\n wkLow: null,\n vol: null,\n avgVol: null,\n ma50: null,\n ma200: null,\n peT: null,\n peF: null,\n beta: null,\n divYield: null,\n stale: true, // previous close, not live\n };\n }\n }\n return Object.keys(quotes).length ? quotes : null;\n } catch {\n return null;\n }\n}\n\n// ── NEWS ─────────────────────────────────────────────────────────\nconst NEWS_POOL = 20; // raised from 6: client-side thesis scoring re-ranks this pool\nconst NEWS_WINDOW = \"when:30d\"; // force recency — RSS otherwise returns all-time-relevant (stale) hits\n\nasync function handleNews(query: string): Promise {\n try {\n // Append a recency operator unless the caller already specified one.\n const q = /\\bwhen:\\d+[dhm]\\b/.test(query)\n ? 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