Time unification

inventory-server/scripts/import/utils.js

@@ -58,7 +58,12 @@ async function setupConnections(sshConfig) {
     "SELECT TIMESTAMPDIFF(SECOND, NOW(), UTC_TIMESTAMP()) as utcDiffSec"
   );
   const mysqlOffsetMs = -utcDiffSec * 1000;  // MySQL UTC offset in ms (e.g., -21600000 for CST)
-  const driverOffsetMs = -5 * 3600 * 1000;   // Driver's -05:00 in ms (-18000000)
+  // Driver offset from the actual config (e.g. '-06:00' in winter, '-05:00'
+  // in summer — set dynamically in import-from-prod.js).
+  const tzMatch = /^([+-])(\d{2}):(\d{2})$/.exec(sshConfig.prodDbConfig.timezone || '');
+  const driverOffsetMs = tzMatch
+    ? (tzMatch[1] === '-' ? -1 : 1) * (Number(tzMatch[2]) * 3600 + Number(tzMatch[3]) * 60) * 1000
+    : -5 * 3600 * 1000;
   const tzCorrectionMs = driverOffsetMs - mysqlOffsetMs;
   // CST (winter): -18000000 - (-21600000) = +3600000 (1 hour correction needed)
   // CDT (summer): -18000000 - (-18000000) = 0 (no correction needed)
@@ -79,8 +84,13 @@ async function setupConnections(sshConfig) {
   }
   prodConnection.adjustDateForMySQL = adjustDateForMySQL;
 
-  // Setup PostgreSQL connection pool for local
-  const localPool = new Pool(sshConfig.localDbConfig);
+  // Setup PostgreSQL connection pool for local.
+  // Pin the session timezone to business time (see docs/TIME.md) so import
+  // writes and any CURRENT_DATE/NOW()::date logic mean Chicago dates.
+  const localPool = new Pool({
+    options: '-c TimeZone=America/Chicago',
+    ...sshConfig.localDbConfig,
+  });
 
   // Test the PostgreSQL connection
   try {