Fix build: SD.h includes, enum/macro collisions (HEX/INPUT), usb_host string stub, BAUDS link

src/modules/usbsniffer.cpp

@@ -6,7 +6,7 @@
 // Filter by device class, log to /logs/usb_*.log with timestamps and raw hex.
 
 class UsbSniffer : public Module {
-  enum FilterType { ALL_DEVICES, STORAGE, INPUT, COMM } filter = ALL_DEVICES;
+  enum FilterType { FLT_ALL, FLT_STORAGE, FLT_INPUT, FLT_COMM } filter = FLT_ALL;
   bool active = false;
   uint32_t packetCount = 0;
   uint32_t dataBytes = 0;