fix: clear inventory spool assignments when switching to Spoolman mode

When enabling Spoolman, stale built-in inventory slot assignments
persisted in the database and the printer card UI still showed
assign/unassign buttons from the internal inventory. Now bulk-deletes
all SpoolAssignment records on mode switch, invalidates the frontend
spool-assignments cache, and hides inventory UI on printer cards while
Spoolman is active.

CHANGELOG.md

@@ -16,6 +16,7 @@ All notable changes to Bambuddy will be documented in this file.
 - **K-Profiles View — Accurate Filament Name Resolution** — K-profile filament names are now resolved from builtin filament tables and user cloud presets (via new `/cloud/filament-id-map` endpoint) instead of showing raw IDs like "GFU99" or "P4d64437". Falls back to extracting names from the profile name field.
 
 ### Fixed
+- **Stale Inventory Assignments Persist After Switching to Spoolman Mode** — When switching from built-in inventory to Spoolman mode, existing spool-to-AMS-slot assignments were not cleaned up. The printer card hover cards continued showing "Assign Spool" buttons that opened the internal inventory modal, and any prior assignments remained visible. Now bulk-deletes all `SpoolAssignment` records when enabling Spoolman, invalidates the frontend cache so printer cards update immediately, and hides the inventory assign/unassign UI on printer cards while in Spoolman mode.
 - **Bulk Archive Delete Leaves Orphaned Database Records** — When bulk-deleting archives, the files were removed from disk before the database commit. If concurrent SQLite writes caused a lock timeout, the commit failed and rolled back — leaving database records pointing to deleted files (broken thumbnails, 404 errors). Fixed by deleting the database record first and only removing files after a successful commit.
 - **Model-Specific Maintenance Tasks for Carbon Rods vs Linear Rails** ([#351](https://github.com/maziggy/bambuddy/issues/351)) — Maintenance tasks "Clean Carbon Rods" and "Lubricate Linear Rails" were shown for all printers regardless of motion system. H2 and A1 series use linear rails (not carbon rods), and X1/P1/P2S series use carbon rods (not linear rails). Maintenance types are now classified by rod/rail type: "Lubricate Carbon Rods" and "Clean Carbon Rods" for X1/P1/P2S, "Lubricate Linear Rails" and "Clean Linear Rails" for A1/H2. Stale and duplicate system types are automatically cleaned up on startup. Includes model-specific wiki links and i18n keys for all 4 locales.
 - **AMS Slot Configuration Overwritten on Startup** — Bambuddy was resetting AMS slot filament presets on every startup and reconnection. The `on_ams_change` callback unconditionally unlinked Bambu Lab spool assignments on each MQTT push-all response, then re-assigned them by sending `ams_filament_setting` without a `setting_id`, which cleared the printer's filament preset. Now compares spool RFID identifiers (`tray_uuid` / `tag_uid`) before unlinking — if the same spool is still in the slot, the assignment is preserved and no `ams_filament_setting` command is sent.

backend/app/api/routes/settings.py

@@ -6,7 +6,7 @@ from pathlib import Path
 
 from fastapi import APIRouter, Depends, File, UploadFile
 from fastapi.responses import JSONResponse, StreamingResponse
-from sqlalchemy import select
+from sqlalchemy import delete, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from backend.app.core.auth import RequirePermissionIfAuthEnabled
@@ -255,7 +255,16 @@ async def update_spoolman_settings(
 ):
     """Update Spoolman integration settings."""
     if "spoolman_enabled" in settings:
-        await set_setting(db, "spoolman_enabled", settings["spoolman_enabled"])
+        old_val = await get_setting(db, "spoolman_enabled") or "false"
+        new_val = settings["spoolman_enabled"]
+        await set_setting(db, "spoolman_enabled", new_val)
+
+        # Switching to Spoolman: clear built-in inventory slot assignments
+        if old_val.lower() != "true" and new_val.lower() == "true":
+            from backend.app.models.spool_assignment import SpoolAssignment
+
+            result = await db.execute(delete(SpoolAssignment))
+            logger.info("Cleared %d spool assignments on switch to Spoolman mode", result.rowcount)
     if "spoolman_url" in settings:
         await set_setting(db, "spoolman_url", settings["spoolman_url"])
     if "spoolman_sync_mode" in settings:

frontend/src/components/SpoolmanSettings.tsx

@@ -86,6 +86,7 @@ export function SpoolmanSettings() {
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['spoolman-settings'] });
       queryClient.invalidateQueries({ queryKey: ['spoolman-status'] });
+      queryClient.invalidateQueries({ queryKey: ['spool-assignments'] });
       showToast(t('settings.toast.settingsSaved'));
     },
   });

frontend/src/pages/PrintersPage.tsx

@@ -2926,7 +2926,7 @@ function PrinterCard({
                                             });
                                           } : undefined,
                                         }}
-                                        inventory={(() => {
+                                        inventory={spoolmanEnabled ? undefined : (() => {
                                           const assignment = onGetAssignment?.(printer.id, ams.id, slotIdx);
                                           return {
                                             assignedSpool: assignment?.spool ? {
@@ -3164,7 +3164,7 @@ function PrinterCard({
                                         });
                                       } : undefined,
                                     }}
-                                    inventory={(() => {
+                                    inventory={spoolmanEnabled ? undefined : (() => {
                                       const assignment = onGetAssignment?.(printer.id, ams.id, htSlotId);
                                       return {
                                         assignedSpool: assignment?.spool ? {
@@ -3350,7 +3350,7 @@ function PrinterCard({
                                           });
                                         } : undefined,
                                       }}
-                                      inventory={(() => {
+                                      inventory={spoolmanEnabled ? undefined : (() => {
                                         const assignment = onGetAssignment?.(printer.id, 255, slotTrayId);
                                         return {
                                           assignedSpool: assignment?.spool ? {

static/index.html

@@ -23,7 +23,7 @@
 
     <!-- Splash screens for iOS -->
     <link rel="apple-touch-startup-image" href="/img/android-chrome-512x512.png" />
-    <script type="module" crossorigin src="/assets/index-CEmIWZ6o.js"></script>
+    <script type="module" crossorigin src="/assets/index-8IRr_Byo.js"></script>
     <link rel="stylesheet" crossorigin href="/assets/index-CggumZ2v.css">
   </head>
   <body>