Library Upload Doesn't Show New File Until Page Reload ([#704](https://github.com/maziggy/bambuddy/issues/704)) — After uploading a file in the Library file manager, the file list didn't update until the user reloaded the browser. The upload endpoint used `db.flush()` instead of `db.commit()`, so the new row was only written to the database *after* the response was sent to the client. The frontend immediately refetched the file list upon receiving the response, but a new database session couldn't see the uncommitted row — resulting in stale data. Fixed by committing before the response is returned. Also fixed the same race condition in folder create, folder update, and file update endpoints. Reported by @shadowjig.

Printer File Manager Doesn't Auto-Refresh ([#704](https://github.com/maziggy/bambuddy/issues/704)) — The printer file manager (SD card browser) only fetched the file list once when opened. Files uploaded from BambuStudio/OrcaSlicer while the modal was open wouldn't appear until the user clicked the refresh button or reopened the modal. Now auto-refreshes every 30 seconds while open. Reported by @shadowjig.

Database Connection Pool Exhaustion Under Load ([#704](https://github.com/maziggy/bambuddy/issues/704)) — Background tasks (print scheduler FTP uploads, camera captures, notification sends, timelapse stitching) held database sessions open during slow network I/O, consuming connection pool slots for seconds at a time. With the default pool of 15 connections (size 5 + overflow 10), concurrent operations during print start/complete events could exhaust the pool, causing `QueuePool limit reached` errors and `greenlet_spawn` failures in RFID spool auto-assignment. Doubled the pool to 30 connections (size 10 + overflow 20). Reported by @shadowjig.

CHANGELOG.md

@@ -13,6 +13,9 @@ All notable changes to Bambuddy will be documented in this file.
 - **Ambient Drying** ([#292](https://github.com/maziggy/bambuddy/issues/292)) — Automatically keep filament dry on idle printers based on humidity, even without queued prints. Enable "Ambient drying" in Settings → Print Queue to have the scheduler start drying on any idle printer whose AMS humidity exceeds the configured threshold — no scheduled prints required. Uses the same humidity threshold, drying presets, and power constraint detection as queue auto-drying. Both modes can be enabled simultaneously. Requested by community.
 
 ### Fixed
+- **Library Upload Doesn't Show New File Until Page Reload** ([#704](https://github.com/maziggy/bambuddy/issues/704)) — After uploading a file in the Library file manager, the file list didn't update until the user reloaded the browser. The upload endpoint used `db.flush()` instead of `db.commit()`, so the new row was only written to the database *after* the response was sent to the client. The frontend immediately refetched the file list upon receiving the response, but a new database session couldn't see the uncommitted row — resulting in stale data. Fixed by committing before the response is returned. Also fixed the same race condition in folder create, folder update, and file update endpoints. Reported by @shadowjig.
+- **Printer File Manager Doesn't Auto-Refresh** ([#704](https://github.com/maziggy/bambuddy/issues/704)) — The printer file manager (SD card browser) only fetched the file list once when opened. Files uploaded from BambuStudio/OrcaSlicer while the modal was open wouldn't appear until the user clicked the refresh button or reopened the modal. Now auto-refreshes every 30 seconds while open. Reported by @shadowjig.
+- **Database Connection Pool Exhaustion Under Load** ([#704](https://github.com/maziggy/bambuddy/issues/704)) — Background tasks (print scheduler FTP uploads, camera captures, notification sends, timelapse stitching) held database sessions open during slow network I/O, consuming connection pool slots for seconds at a time. With the default pool of 15 connections (size 5 + overflow 10), concurrent operations during print start/complete events could exhaust the pool, causing `QueuePool limit reached` errors and `greenlet_spawn` failures in RFID spool auto-assignment. Doubled the pool to 30 connections (size 10 + overflow 20). Reported by @shadowjig.
 - **Block Mode Skips Humidity Auto-Stop** ([#292](https://github.com/maziggy/bambuddy/issues/292)) — When "Wait for drying to complete" was enabled and a printer had pending queue items, the scheduler skipped the humidity auto-stop check entirely. A drying session that reached its humidity target would continue indefinitely instead of stopping after the 30-minute minimum. Now, block mode only prevents starting new drying — already-drying printers still have their humidity checked and stopped when the threshold is met.
 - **AMS Fill Level Shows 0% for Non-Viewer Users** ([#676](https://github.com/maziggy/bambuddy/issues/676)) — When authentication was enabled with advanced permissions, users with `inventory:view_assignments` permission saw 0% fill level on AMS slots where inventory spool data had stale `weight_used` values. The fill level fallback chain (Spoolman → Inventory → AMS remain) used nullish coalescing (`??`), which doesn't fall through on `0` — so a stale inventory fill of 0% permanently shadowed the correct real-time AMS remain value from the printer. Now, when inventory says 0% but the AMS hardware reports a positive remain, the inventory value is bypassed in favor of the live AMS data. Viewer users were unaffected because their group lacked `inventory:view_assignments`, so the inventory query never fired and the AMS remain was used directly. Reported by @cadtoolbox.
 - **Virtual Printer Proxy Mode Always Shows X1C Model** — Creating a virtual printer in Proxy mode always set the model to X1C regardless of the destination printer, because the frontend hides the model dropdown in proxy mode and the backend defaulted to X1C. Now auto-inherits the model from the target printer when creating or updating a proxy virtual printer (e.g. a proxy pointing at a P1S correctly presents itself as P1S to the slicer). The model also auto-updates when changing the target printer or switching to proxy mode.

backend/app/api/routes/library.py

@@ -415,7 +415,7 @@ async def create_folder(
         archive_id=data.archive_id,
     )
     db.add(folder)
-    await db.flush()
+    await db.commit()
     await db.refresh(folder)
 
     return FolderResponse(
@@ -531,7 +531,7 @@ async def update_folder(
                 raise HTTPException(status_code=404, detail="Archive not found")
             folder.archive_id = data.archive_id
 
-    await db.flush()
+    await db.commit()
     await db.refresh(folder)
 
     # Get file count and names
@@ -813,7 +813,7 @@ async def upload_file(
             created_by_id=current_user.id if current_user else None,
         )
         db.add(library_file)
-        await db.flush()
+        await db.commit()
         await db.refresh(library_file)
 
         return FileUploadResponse(
@@ -1962,7 +1962,7 @@ async def update_file(
     if data.notes is not None:
         file.notes = data.notes if data.notes else None
 
-    await db.flush()
+    await db.commit()
     await db.refresh(file)
 
     # Return full response (reuse get_file logic)

backend/app/core/database.py

@@ -20,6 +20,8 @@ def _set_sqlite_pragmas(dbapi_conn, connection_record):
 engine = create_async_engine(
     settings.database_url,
     echo=settings.debug,
+    pool_size=10,
+    max_overflow=20,
 )
 
 # Register the pragma listener on the underlying sync engine
@@ -44,6 +46,8 @@ async def reinitialize_database():
     engine = create_async_engine(
         settings.database_url,
         echo=settings.debug,
+        pool_size=10,
+        max_overflow=20,
     )
     event.listen(engine.sync_engine, "connect", _set_sqlite_pragmas)
     async_session = async_sessionmaker(

frontend/src/components/FileManagerModal.tsx

@@ -303,6 +303,7 @@ export function FileManagerModal({ printerId, printerName, onClose }: FileManage
   const { data, isLoading, refetch } = useQuery({
     queryKey: ['printerFiles', printerId, currentPath],
     queryFn: () => api.getPrinterFiles(printerId, currentPath),
+    refetchInterval: 30000,
   });
 
   const { data: storageData } = useQuery({

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-CJ70I8NI.js"></script>
+    <script type="module" crossorigin src="/assets/index-Dbccwufc.js"></script>
     <link rel="stylesheet" crossorigin href="/assets/index-BgeMokkR.css">
   </head>
   <body>