Move UART command handlers into main/cmd/ for clearer layout.

Add cmd/ to CMake include paths and update documentation paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

main/CMakeLists.txt

@@ -14,17 +14,17 @@ idf_component_register(
   "uart.c"
   "uart_proto.c"
   "uart_cmd.c"
-  "cmd_handler.c"
-  "cmd_version.c"
-  "cmd_client_info.c"
-  "cmd_accel_deadzone.c"
-  "cmd_espnow_unicast_test.c"
-  "cmd_espnow_find_me.c"
-  "cmd_restart.c"
+  "cmd/cmd_handler.c"
+  "cmd/cmd_version.c"
+  "cmd/cmd_client_info.c"
+  "cmd/cmd_accel_deadzone.c"
+  "cmd/cmd_espnow_unicast_test.c"
+  "cmd/cmd_espnow_find_me.c"
+  "cmd/cmd_restart.c"
   "pod_reboot.c"
-  "cmd_led_ring.c"
-  "cmd_ota.c"
-  "cmd_ota_slave_progress.c"
+  "cmd/cmd_led_ring.c"
+  "cmd/cmd_ota.c"
+  "cmd/cmd_ota_slave_progress.c"
   "ota_uart.c"
   "ota_espnow.c"
   "client_registry.c"
@@ -40,6 +40,7 @@ idf_component_register(
   "proto/pb_common.c"
   INCLUDE_DIRS
   "."
+  "cmd"
   "proto"
   REQUIRES
   esp_wifi