Implement compatibility for applet links in /bin directory by mirroring sbin applet links. Update configuration to enable watchdog support.

build.sh

@@ -109,6 +109,18 @@ for f in "${libbusybox_candidates[@]}"; do
   ln -sf "$(basename "${f}")" "${INSTALL_DIR}/lib/libbusybox.so" 2>/dev/null || true
 done
 
+# Compatibility layout: mirror sbin applet links into /bin
+# so environments expecting everything under /bin (like the target console)
+# can resolve applets such as /bin/watchdog.
+if [ -d "${INSTALL_DIR}/sbin" ] && [ -d "${INSTALL_DIR}/bin" ]; then
+  shopt -s nullglob
+  for s in "${INSTALL_DIR}/sbin"/*; do
+    name="$(basename "${s}")"
+    ln -sf "busybox" "${INSTALL_DIR}/bin/${name}"
+  done
+  shopt -u nullglob
+fi
+
 echo "Build completed successfully."
 echo "Binary: ${BUSYBOX_DIR}/busybox"
 echo "Shared library: ${BUSYBOX_DIR}/libbusybox.so"

config/.config

@@ -832,7 +832,7 @@ CONFIG_UBIRSVOL=y
 CONFIG_UBIUPDATEVOL=y
 CONFIG_UBIRENAME=y
 # CONFIG_VOLNAME is not set
-# CONFIG_WATCHDOG is not set
+CONFIG_WATCHDOG=y
 
 #
 # Networking Utilities