Clarify WiFi configuration instructions in MQTT_IMPLEMENTATION.md. Updated the documentation to specify that the WiFi password is optional for open networks and emphasized the format for entering SSID and password values. Added notes on value length and formatting requirements for clarity.

MQTT_IMPLEMENTATION.md

@@ -33,7 +33,7 @@ If migrating from an existing node (e.g., a Raspberry Pi gateway), restore the p
 set prv.key <your_64_hex_char_private_key>
 ```
 
-**4. Configure WiFi credentials**
+**4. Configure WiFi credentials** (value is the rest of the line; do not use quotes — see [WiFi Commands](#wifi-commands))
 ```bash
 set wifi.ssid YourWiFiNetwork
 set wifi.pwd YourWiFiPassword
@@ -222,7 +222,7 @@ The MQTT bridge comes with the following defaults for fresh installs:
 - **Slot 2**: `analyzer-eu`
 - **Slots 3-6**: `none` (disabled)
 - **WiFi SSID**: (blank — must be configured)
-- **WiFi Password**: (blank — must be configured)
+- **WiFi Password**: (blank — optional for open networks)
 - **WiFi Power Save**: `none` (no power save)
 - **Timezone**: (blank — uses UTC until configured)
 - **Timezone Offset**: 0 (fallback, no offset)
@@ -383,6 +383,8 @@ These settings apply across all MQTT slots:
 - `set wifi.ssid <ssid>` - Set WiFi SSID
 - `set wifi.pwd <password>` - Set WiFi password
 - `set wifi.powersave none|min|max` - Set WiFi power save mode
+
+> **Note:** The value is everything after the first space (spaces in SSID/password are fine). Do not wrap in quotes — they are stored literally. Max length: 31 characters (SSID), 63 (password). For open networks, use `set wifi.pwd ` with nothing after the space.
   - `none` - No power saving (best performance, highest power consumption)
   - `min` - Minimum power saving (balanced performance and power)
   - `max` - Maximum power saving (lowest power consumption, may affect performance)
@@ -606,6 +608,9 @@ set prv.key <your_64_hex_char_private_key>
 ```
 
 ### Step 3: Configure WiFi
+
+Use the rest of the line as the value (spaces allowed; no quotes). See [WiFi Commands](#wifi-commands).
+
 ```
 set wifi.ssid YourWiFiNetwork
 set wifi.pwd YourWiFiPassword