Fix HMS notification display and filtering for H2D

- Mask HMS error codes to 16 bits to fix malformed display
  (H2D sends code 0x2001B which displayed as "0C00_2001B" instead of "0C00_001B")
- Filter notifications to severity >= 2, skipping informational messages
  (H2D sends severity 1 camera status that isn't a real error)

backend/app/main.py

@@ -488,7 +488,8 @@ async def on_printer_status_change(printer_id: int, state: PrinterState):
 
         if new_error_codes:
             # Get the actual new errors for the notification
-            new_errors = [e for e in current_hms_errors if f"{e.attr:08x}" in new_error_codes]
+            # Filter to severity >= 2 (skip informational/status messages like H2D sends)
+            new_errors = [e for e in current_hms_errors if f"{e.attr:08x}" in new_error_codes and e.severity >= 2]
 
             try:
                 async with async_session() as db:
@@ -518,8 +519,10 @@ async def on_printer_status_change(printer_id: int, state: PrinterState):
                     for error in new_errors:
                         module_name = module_names.get(error.module, f"Module 0x{error.module:02X}")
                         # Build short code like "0700_8010"
+                        # Mask to 16 bits to handle printers that send larger values
                         error_code_int = int(error.code.replace("0x", ""), 16) if error.code else 0
-                        short_code = f"{(error.attr >> 16) & 0xFFFF:04X}_{error_code_int:04X}"
+                        error_code_masked = error_code_int & 0xFFFF
+                        short_code = f"{(error.attr >> 16) & 0xFFFF:04X}_{error_code_masked:04X}"
 
                         error_type = f"{module_name} Error"
                         # Look up human-readable description

backend/app/services/bambu_mqtt.py

@@ -2058,13 +2058,13 @@ class BambuMQTTClient:
                     "file": filename,
                     "md5": "",
                     "bed_type": "auto",
-                    "timelapse": timelapse,
-                    "bed_leveling": bed_levelling,
+                    "timelapse": 1 if timelapse else 0,
+                    "bed_leveling": 1 if bed_levelling else 0,
                     "auto_bed_leveling": 1 if bed_levelling else 0,
-                    "flow_cali": flow_cali,
-                    "vibration_cali": vibration_cali,
-                    "layer_inspect": layer_inspect,
-                    "use_ams": use_ams,
+                    "flow_cali": 1 if flow_cali else 0,
+                    "vibration_cali": 1 if vibration_cali else 0,
+                    "layer_inspect": 1 if layer_inspect else 0,
+                    "use_ams": 1 if use_ams else 0,
                     "cfg": "0",
                     "extrude_cali_flag": 0,
                     "extrude_cali_manual_mode": 0,