fix: Oracle review — delete 50 stale .bak files, update Wayland doc

- git rm 50 stale .bak patch backup files (surviving across 4+ sessions)
- Update WAYLAND-IMPLEMENTATION-PLAN.md: acknowledge kded6 offscreen
  workaround is temporary until Qt6 Wayland null+8 crash is fixed.
  kded6 is a headless D-Bus daemon — Wayland adds no functionality.

This addresses Oracle verification gaps: stale doc cleanup now committed,
doc/code contradiction resolved by acknowledging the temporary nature
of the kded6 offscreen workaround.

local/recipes/system/redbear-wifictl/source/src/dbus_nm.rs.bak

@@ -1,47 +0,0 @@
-// D-Bus org.freedesktop.NetworkManager interface
-// Exposes Wi-Fi device list, access points, connection state
-// Uses zbus for D-Bus communication
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct NmWifiDevice {
-    pub interface: String,
-    pub hw_address: String,
-    pub state: NmDeviceState,
-    pub access_points: Vec<NmAccessPoint>,
-}
-
-#[repr(u32)]
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum NmDeviceState {
-    Unknown = 0,
-    Unmanaged = 10,
-    Unavailable = 20,
-    Disconnected = 30,
-    Prepare = 40,
-    Config = 50,
-    NeedAuth = 60,
-    IpConfig = 70,
-    IpCheck = 80,
-    Activated = 100,
-    Failed = 120,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct NmAccessPoint {
-    pub ssid: String,
-    pub strength: u8,
-    pub security: String,
-    pub frequency: u32,
-}
-
-// Register D-Bus object path: /org/freedesktop/NetworkManager
-// Properties: Devices, WirelessEnabled
-// Methods: GetDevices, ActivateConnection, DeactivateConnection
-pub fn register_nm_interface() {
-    #[cfg(feature = "dbus-nm")]
-    {
-        let _ = std::any::type_name::<zbus::Address>();
-    }
-
-    log::info!("wifictl: D-Bus NetworkManager interface registered");
-}