refactor(network): replace nmcli with native D-Bus for Wi-Fi management

This commit fully migrates the Python network service away from external wlan0: connected to Amar 2GNet
	"MEDIATEK MT7921 802.11ax"
	wifi (mt7921e), 2C:98:11:76:9B:2B, hw, mtu 1500
	ip4 default, ip6 default
	inet4 192.168.18.70/24
	route4 192.168.18.0/24 metric 600
	route4 default via 192.168.18.1 metric 600
	inet6 2405:acc0:1306:351c:ac94:2135:f9a8:5c89/64
	inet6 fe80::4057:8edd:a684:5e33/64
	route6 fe80::/64 metric 1024
	route6 2405:acc0:1306:351c::/64 metric 600
	route6 default via fe80::1 metric 600

lo: connected (externally) to lo
	"lo"
	loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536
	inet4 127.0.0.1/8
	inet6 ::1/128

docker0: connected (externally) to docker0
	"docker0"
	bridge, 0A:89:72:7F:4D:75, sw, mtu 1500
	inet4 172.17.0.1/16
	route4 172.17.0.0/16 metric 0

p2p-dev-wlan0: disconnected
	"p2p-dev-wlan0"
	wifi-p2p, hw

enp2s0: unavailable
	"Realtek RTL8111/8168/8211/8411"
	ethernet (r8169), 40:C2:BA:53:D5:E4, hw, mtu 1500

DNS configuration:
	servers: 192.168.18.1
	interface: wlan0

	servers: fe80::1
	interface: wlan0

Use "nmcli device show" to get complete information about known devices and
"nmcli connection show" to get an overview on active connection profiles.

Consult nmcli(1) and nmcli-examples(7) manual pages for complete usage details.
subprocess calls, implementing native D-Bus communication for a more robust and
integrated architecture.

Key changes:
- :
  - Implemented native D-Bus methods for , , and .
  - Updated  to track , , and  state.
  - Fixed a bug where D-Bus  returned a tuple, preventing known networks from being parsed correctly.
- :
  - Wired UI events to the new D-Bus connection methods.
  - Fixed a race condition in  initialization where it missed the synchronous  signal, leaving the UI permanently disabled.
  - Removed the  early-return optimization in  that was preventing the active CSS state from applying to already-known networks.
  - Cleaned up unused variables to satisfy  linting and removed redundant  blocks.
- :
  - Removed the 5-second timeout hack, as the new D-Bus service properly fires callbacks upon connection success/failure.
  - Removed hardcoded WPA2 text to make the dialog security-type agnostic.
- :
  - Cleaned up active state styling so only the SVG icon box highlights (using ) when a network is connected.

src/window/controlcenter/bluetooth.py

@@ -1,6 +1,6 @@
 from enum import Enum, auto
 
-from fabric.utils import Gdk, GLib, Gtk, logger
+from fabric.utils import Gdk, GLib, Gtk, idle_add, logger
 from fabric.widgets.box import Box
 from fabric.widgets.button import Button
 from fabric.widgets.centerbox import CenterBox
@@ -518,7 +518,7 @@ class BluetoothConnections(Box):
             ):
                 self.client.scan()
             # Defer refresh until after the height animation completes
-            GLib.idle_add(self._refresh_after_animation)
+            idle_add(self._refresh_after_animation)
 
     def _cancel_pending_refresh(self):
         if hasattr(self, "_anim_finished_handler") and self._anim_finished_handler: