feat(G1,P16A,P16B): 收口主数据核心与节假日日历增强

server/src/config.js

@@ -92,6 +92,7 @@ function getConfig() {
     ocrTimeoutMs: Number(process.env.OCR_TIMEOUT_MS ?? 5000),
 
     invoiceVerificationEnabled: process.env.INVOICE_VERIFICATION_ENABLED === "true",
+    leaveHolidayCalendarEnabled: process.env.LEAVE_HOLIDAY_CALENDAR_ENABLED === "true",
     invoiceVerificationFlagEnv: process.env.INVOICE_VERIFICATION_ENABLED ?? "false",
     verificationProvider: process.env.VERIFICATION_PROVIDER ?? "mock",
     verificationPollCron: process.env.VERIFICATION_POLL_CRON ?? "* * * * *",