Add 'Connecting' state to WiFi indicator in launcher

[nchapman]

Current Behavior

The WiFi indicator in the launcher only shows two states:

• WiFi icon visible = connected
• No WiFi icon = disconnected

Problem

After boot or when connecting to a network, there's a period where WiFi is enabled and trying to connect, but the launcher shows no indicator. Users can't tell if WiFi is working or if it failed.

Desired Behavior

Add a third state to match the WiFi pak's status indicator:

• Connected - Solid WiFi icon (current behavior)
• Connecting - Animated or different WiFi icon (flashing, different color, or "?" overlay)
• Disconnected - No icon (current behavior)

Context

The WiFi.pak already properly detects three states:

• Status: Connected - interface operstate is "up" with IP address
• Status: Connecting... - interface operstate is not "down" but no IP yet (dormant/lowerlayerdown)
• Status: Disconnected - interface operstate is "down"

The launcher should use the same detection logic.

Suggested Implementation

In the launcher WiFi indicator code:

const char* operstate = read_file("/sys/class/net/wlan0/operstate");
if (!operstate || strcmp(operstate, "down") == 0) {
    // No icon (disconnected)
} else if (strcmp(operstate, "up") == 0) {
    // Check for IP address
    if (has_ip_address()) {
        // Show connected icon
    } else {
        // Show connecting icon (no IP yet)
    }
} else {
    // operstate is dormant/lowerlayerdown/etc
    // Show connecting icon
}

This provides better UX feedback during the background connection process.