Standardize API UART parity and update docs

docs/SERIAL_COMMANDS.md

@@ -364,3 +364,53 @@ Returns complete runtime status including:
 - Alarms
 - Network state
 - System information
+
+
+---
+
+# WiFi Serial Commands
+
+## wifi status
+
+Print current WiFi status.
+
+## wifi list
+
+Print saved WiFi networks, priorities, and whether passwords are set.
+
+## wifi clear
+
+Clear saved STA WiFi networks.
+
+## wifi ssid <ssid>
+
+Set primary WiFi SSID.
+
+## wifi pass <password>
+
+Set primary WiFi password.
+
+## wifi add <ssid>|<password>|<priority>
+
+Add a saved WiFi network.
+
+Example:
+
+    wifi add Starlink|starlink_password|1
+    wifi add WardAP|Ward5213|2
+    wifi save
+    wifi connect
+
+Lower priority numbers are tried first.
+
+## wifi save
+
+Save WiFi configuration.
+
+## wifi connect
+
+Attempt STA WiFi connection using saved networks by priority.
+
+AP remains available at:
+
+    192.168.4.1