fix: update SPIFFS binary creation and enhance NFC buffer size

src/main.cpp

@@ -19,6 +19,12 @@
 void setup() {
   Serial.begin(115200);
 
+  uint64_t chipid;
+
+  chipid = ESP.getEfuseMac(); //The chip ID is essentially its MAC address(length: 6 bytes).
+  Serial.printf("ESP32 Chip ID = %04X", (uint16_t)(chipid >> 32)); //print High 2 bytes
+  Serial.printf("%08X\n", (uint32_t)chipid); //print Low 4bytes.
+
   // Initialize SPIFFS
   initializeSPIFFS();