Restore staged uploads after page reload

routers/upload.py

@@ -205,12 +205,34 @@ async def upload_page(request: Request):
                SUM(CASE WHEN status='error' THEN 1 ELSE 0 END) AS errors
             FROM documents WHERE status != 'staged'"""
         ).fetchone()
+        staged_rows = conn.execute(
+            """SELECT id, image_path, page_number
+               FROM documents
+               WHERE status='staged'
+               ORDER BY id"""
+        ).fetchall()
+
+    staged_documents = []
+    for row in staged_rows:
+        image_name = Path(row["image_path"]).name
+        page_number = row["page_number"]
+        if page_number:
+            image_name = f"{image_name} (p{page_number})"
+        staged_documents.append(
+            {
+                "id": row["id"],
+                "image_path": row["image_path"],
+                "name": image_name,
+            }
+        )
+
     return render_template(
         templates,
         request,
         "index.html",
         {
             "stats": dict(stats) if stats else {},
+            "staged_documents": staged_documents,
             "providers": get_available_providers(),
             "default_provider": get_default_provider(),
         },
@@ -397,12 +419,16 @@ async def process_staged(
         provider = get_default_provider()
 
     ids = [int(x) for x in doc_ids.split(",") if x.strip().isdigit()]
+    if not ids:
+        return RedirectResponse("/?staged=0", status_code=303)
 
     with get_db() as conn:
         rows = conn.execute(
             f"SELECT id, image_path FROM documents WHERE id IN ({','.join('?' * len(ids))}) AND status='staged'",
             ids,
         ).fetchall()
+        if not rows:
+            return RedirectResponse("/?staged=0", status_code=303)
         for row in rows:
             conn.execute(
                 "UPDATE documents SET status='pending', provider=?, updated_at=CURRENT_TIMESTAMP WHERE id=?",