fix(network): don't show a saved SSID when Wi-Fi is disconnected on macOS

[ykworx]

Problem

On macOS, scripts/network.sh derives the candidate Wi-Fi name (wifi_network) from:

networksetup -listpreferredwirelessnetworks "$ifname" | awk 'NR==2 && sub("\t","") { print; exit }'

listpreferredwirelessnetworks lists saved / preferred networks, not the current association. It is used as the fallback when getairportnetwork reports "You are not associated with an AirPort network."

So when Wi-Fi is off but the machine is online via Ethernet, the host ping passes, getairportnetwork correctly returns "not associated", and the module falls back to the first saved network — showing a stale SSID (e.g. an old phone hotspot) the machine is not connected to.

Closes #396.

Fix

Gate the Darwin Wi-Fi branch on the interface actually being associated, before consulting any SSID source:

if [[ "$(ifconfig "$ifname" 2>/dev/null | awk '/status:/ {print $2}')" != "active" ]]; then
  echo "$ethernet_label"
  return
fi

ifconfig "$ifname" reports status: active only when the interface is associated to an AP (inactive when Wi-Fi is off or unassociated). This signal stays readable even though the SSID itself is gated behind Location Services on macOS 15+.

The existing #370 SSID resolution (getairportnetwork + the listpreferredwirelessnetworks/ipconfig fallback) is left untouched, so there is no behavior change for users currently on Wi-Fi — only the not-associated case stops surfacing a saved name.

Testing

macOS 26.3, Wi-Fi off + online via Ethernet:

• Before: module shows the first saved network (e.g. an old hotspot name).
• After: module shows Ethernet.

bash -n scripts/network.sh passes.

[ethancedwards8]

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