Fix multi-month scrape coverage and add duo MUSIC EXCHANGE

- Extend 8 scrapers (liquid-room, shibuya-o, club-quattro, meets-otsuka,
  nishieifuku-jam, fever-shindaita, fad-yokohama, and new duo-music-exchange)
  to fetch 3 calendar months instead of 1-2, covering the full 65-day window
- Add duo MUSIC EXCHANGE scraper (渋谷, ~700 cap, /schedule/YYYY/index_YYYY-MM.html)
- Add npm test: Node.js built-in test runner verifies each scraper fetches
  all required month URLs via mocked fetch (10 tests, no extra deps)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 66 insertions, 50 deletions

diff --git a/app/scrapers/meets-otsuka.ts b/app/scrapers/meets-otsuka.ts
index 0b56251..0acc925 100644
--- a/app/scrapers/meets-otsuka.ts
+++ b/app/scrapers/meets-otsuka.ts
@@ -21,60 +21,76 @@ export const venue: VenueMeta = {
   capacity: 100,
 };
 
+function parseHtml(html: string): EventInput[] {
+  const $ = cheerio.load(html);
+  const events: EventInput[] = [];
+
+  $("div.blog-entry.event-wrap").each((_, el) => {
+    const $el = $(el);
+
+    const date = $el.attr("event-date") ?? "";
+    if (!date.match(/^\d{4}-\d{2}-\d{2}$/)) return;
+
+    const $link = $el.find("h2 a").first();
+    const title = $link.text().trim();
+    if (!title) return;
+
+    const detailPath = $link.attr("href") ?? null;
+    const sourceUrl = detailPath ? `${venue.url}${detailPath}` : null;
+
+    const artist = $el.find("p.act span").map((_, s) => $(s).text().trim()).get().join("、") || null;
+
+    const timeText = $el.find("p.time").first().text();
+    const openMatch = timeText.match(/OPEN\s*(\d{2}:\d{2})/i);
+    const startMatch = timeText.match(/START\s*(\d{2}:\d{2})/i);
+
+    const price = $el.find("span.ticket-price__label").first().text().trim() || null;
+
+    const bgStyle = $el.find("div.image-bg").attr("style") ?? "";
+    const imgMatch = bgStyle.match(/url\(["']?([^"')]+)["']?\)/);
+    const imageUrl = imgMatch?.[1] ?? null;
+
+    const ticketUrl =
+      $el.find("a[href*='livepocket'], a[href*='eplus'], a[href*='pia'], a[href*='ticket']")
+        .first().attr("href") ?? null;
+
+    events.push({
+      venue_id: venue.id,
+      title,
+      artist,
+      date,
+      open_time: openMatch?.[1] ?? null,
+      start_time: startMatch?.[1] ?? null,
+      price,
+      ticket_url: ticketUrl,
+      image_url: imageUrl,
+      source_url: sourceUrl,
+    });
+  });
+
+  return events;
+}
+
 export const scraper: Scraper = {
   venue,
   async scrape(): Promise<EventInput[]> {
-    const res = await fetch("https://meets.rinky.info/events");
-    if (!res.ok) throw new Error(`HTTP ${res.status}`);
-    const $ = cheerio.load(await res.text());
-    const events: EventInput[] = [];
-
-    $("div.blog-entry.event-wrap").each((_, el) => {
-      const $el = $(el);
-
-      const date = $el.attr("event-date") ?? "";
-      if (!date.match(/^\d{4}-\d{2}-\d{2}$/)) return;
-
-      const $link = $el.find("h2 a").first();
-      const title = $link.text().trim();
-      if (!title) return;
-
-      const detailPath = $link.attr("href") ?? null;
-      const sourceUrl = detailPath
-        ? `${venue.url}${detailPath}`
-        : null;
-
-      const artist = $el.find("p.act span").map((_, s) => $(s).text().trim()).get().join("、") || null;
-
-      const timeText = $el.find("p.time").first().text();
-      const openMatch = timeText.match(/OPEN\s*(\d{2}:\d{2})/i);
-      const startMatch = timeText.match(/START\s*(\d{2}:\d{2})/i);
-
-      const price = $el.find("span.ticket-price__label").first().text().trim() || null;
-
-      // background-image: url("...")
-      const bgStyle = $el.find("div.image-bg").attr("style") ?? "";
-      const imgMatch = bgStyle.match(/url\(["']?([^"')]+)["']?\)/);
-      const imageUrl = imgMatch?.[1] ?? null;
-
-      const ticketUrl =
-        $el.find("a[href*='livepocket'], a[href*='eplus'], a[href*='pia'], a[href*='ticket']")
-          .first().attr("href") ?? null;
-
-      events.push({
-        venue_id: venue.id,
-        title,
-        artist,
-        date,
-        open_time: openMatch?.[1] ?? null,
-        start_time: startMatch?.[1] ?? null,
-        price,
-        ticket_url: ticketUrl,
-        image_url: imageUrl,
-        source_url: sourceUrl,
-      });
+    const now = new Date();
+    const urls = [0, 1, 2].map((offset) => {
+      const d = new Date(now.getFullYear(), now.getMonth() + offset, 1);
+      const ym = `${d.getFullYear()}/${String(d.getMonth() + 1).padStart(2, "0")}`;
+      return `https://meets.rinky.info/events?date=${encodeURIComponent(ym)}`;
     });
 
-    return events;
+    const htmls = await Promise.all(
+      urls.map((url) => fetch(url).then((r) => (r.ok ? r.text() : "")))
+    );
+
+    const seen = new Set<string>();
+    return htmls.flatMap(parseHtml).filter((e) => {
+      const key = `${e.date}|${e.title}`;
+      if (seen.has(key)) return false;
+      seen.add(key);
+      return true;
+    });
   },
 };