From c3114db05e94a0b7b78ee043b219293205c4092a Mon Sep 17 00:00:00 2001
From: Claude <claude@kuns.dev>
Date: Fri, 12 Jun 2026 09:06:23 +0000
Subject: [PATCH] fix: Archiv-Zeiten als America/New_York interpretieren (gegen
 RSS kalibriert, +DST)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 src/server/scripts/trump-backfill.ts | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/server/scripts/trump-backfill.ts b/src/server/scripts/trump-backfill.ts
index 5f38e62..32c1e0b 100644
--- a/src/server/scripts/trump-backfill.ts
+++ b/src/server/scripts/trump-backfill.ts
@@ -51,6 +51,23 @@ console.log(`On-chain: ${onchainCount} Events`);
 const pages = Number(args['truth-pages']);
 const candidates: { symbol: string; ts: number; url: string }[] = [];
 let oldestTs = Infinity;
+
+/**
+ * Archiv-Zeiten sind US-Eastern OHNE Zeitzonen-Angabe (gegen RSS-pubDate kalibriert
+ * 2026-06-12: Offset exakt −4h = EDT). Interpretiert den String als America/New_York
+ * inkl. Sommer-/Winterzeit, ohne Dependency.
+ */
+function parseEasternTime(s: string): number {
+  const utcGuess = Date.parse(s + ' UTC');
+  if (Number.isNaN(utcGuess)) return NaN;
+  // Offset von New York zum Zeitpunkt utcGuess bestimmen (±1h Fehler durch DST-Grenze ist hier irrelevant)
+  const nyParts = new Intl.DateTimeFormat('en-US', { timeZone: 'America/New_York', timeZoneName: 'shortOffset' })
+    .formatToParts(new Date(utcGuess))
+    .find((p) => p.type === 'timeZoneName')?.value ?? 'GMT-5';
+  const m = nyParts.match(/GMT([+-]\d+)/);
+  const offsetH = m ? Number(m[1]) : -5;
+  return utcGuess - offsetH * 3600_000; // ET 9:49 PM = UTC 9:49 PM − (−4h) = 01:49 nächster Tag
+}
 for (let p = 1; p <= pages; p++) {
   const res = await fetch(`https://trumpstruth.org/?page=${p}`, { signal: AbortSignal.timeout(20_000) });
   if (!res.ok) { console.warn(`Seite ${p}: HTTP ${res.status} — Truth-Scan endet hier`); break; }
@@ -66,7 +83,7 @@ for (let p = 1; p <= pages; p++) {
     // Post-Text aus status__content (nicht status-info__body — das ist der Autor-/Meta-Bereich)
     const body = block.match(/status__content[^>]*>([\s\S]*?)<\/div>/)?.[1] ?? '';
     if (!url || !timeRaw) continue;
-    const ts = Date.parse(timeRaw);
+    const ts = parseEasternTime(timeRaw);
     if (Number.isNaN(ts)) continue;
     oldestTs = Math.min(oldestTs, ts);
     const text = body.replace(/<[^>]+>/g, ' ').replace(/\s+/g, ' ').trim();