fix: remove incorrect ethernet badge on printer cards

home_flag bit 18 was incorrectly interpreted as "wired/ethernet
  connection", causing the ethernet badge to always show — even on
  printers without an ethernet port (e.g. A1, P1S). This hid the
  WiFi signal indicator entirely.

  Removed the wired_network field and ethernet badge UI. The WiFi
  signal badge now shows correctly whenever the printer reports
  signal strength.

backend/app/api/routes/printers.py

@@ -571,7 +571,6 @@ async def get_printer_status(
         timelapse=state.timelapse,
         ipcam=state.ipcam,
         wifi_signal=state.wifi_signal,
-        wired_network=state.wired_network,
         nozzles=nozzles,
         nozzle_rack=nozzle_rack,
         print_options=print_options,

backend/app/schemas/printer.py

@@ -139,7 +139,7 @@ class AMSUnit(BaseModel):
     is_ams_ht: bool = False  # True for AMS-HT (single spool), False for regular AMS (4 spools)
     tray: list[AMSTray] = []
     serial_number: str = ""  # AMS unit serial number (sn from MQTT)
-    sw_ver: str = ""         # AMS firmware version (from get_version info.module)
+    sw_ver: str = ""  # AMS firmware version (from get_version info.module)
 
 
 class NozzleInfoResponse(BaseModel):
@@ -212,7 +212,6 @@ class PrinterStatus(BaseModel):
     timelapse: bool = False  # Timelapse recording active
     ipcam: bool = False  # Live view enabled
     wifi_signal: int | None = None  # WiFi signal strength in dBm
-    wired_network: bool = False  # Ethernet connection detected
     nozzles: list[NozzleInfoResponse] = []  # Nozzle hardware info (index 0=left/primary, 1=right)
     nozzle_rack: list[NozzleRackSlot] = []  # H2C 6-nozzle tool-changer rack
     print_options: PrintOptionsResponse | None = None  # AI detection and print options

backend/app/services/bambu_mqtt.py

@@ -120,7 +120,6 @@ class PrinterState:
     timelapse: bool = False  # Timelapse recording active
     ipcam: bool = False  # Live view / camera streaming enabled
     wifi_signal: int | None = None  # WiFi signal strength in dBm
-    wired_network: bool = False  # Ethernet connection detected (home_flag bit 18)
     # Nozzle hardware info (for dual nozzle printers, index 0 = left, 1 = right)
     nozzles: list = field(default_factory=lambda: [NozzleInfo(), NozzleInfo()])
     # AI detection and print options
@@ -2071,8 +2070,6 @@ class BambuMQTTClient:
                     f"[{self.serial_number}] store_to_sdcard changed: {self.state.store_to_sdcard} -> {store_to_sdcard}"
                 )
             self.state.store_to_sdcard = store_to_sdcard
-            # Bit 18 (0x00040000) indicates wired/ethernet connection
-            self.state.wired_network = bool((home_flag >> 18) & 1)
 
         # Parse timelapse status (recording active during print)
         if "timelapse" in data:

backend/app/services/printer_manager.py

@@ -668,7 +668,6 @@ def printer_state_to_dict(state: PrinterState, printer_id: int | None = None, mo
         "ams_extruder_map": ams_extruder_map,
         # WiFi signal strength
         "wifi_signal": state.wifi_signal,
-        "wired_network": state.wired_network,
         # Calibration stage tracking
         "stg_cur": state.stg_cur,
         "stg_cur_name": get_derived_status_name(state, model),