v1.09 — Fix ODT download, selective removal, Display Level Full

- Direct CDN download (officecdn.microsoft.com/pr/wsus/setup.exe) instead of broken fwlink redirect
- HttpClient with proper redirect handling, content-type check, file size validation
- Selective C2R removal: each product listed separately, only checked items removed
- OfficeDetector splits ProductReleaseIds into individual entries
- Display Level="Full" for removal (shows Microsoft progress UI)
- Confirmation dialog before removal on all pages

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Services/OdtXmlGenerator.cs

@@ -46,7 +46,31 @@ namespace InstaSoftOfficeTool.Services
                 new XElement("Remove", new XAttribute("All", "TRUE")),
                 new XElement("Display",
                     new XAttribute("Level", "Full"),
-                    new XAttribute("AcceptEULA", "TRUE")));
+                    new XAttribute("AcceptEULA", "TRUE")),
+                new XElement("Property",
+                    new XAttribute("Name", "FORCEAPPSHUTDOWN"),
+                    new XAttribute("Value", "TRUE")));
+
+            var doc = new XDocument(new XDeclaration("1.0", "utf-8", null), configuration);
+            return doc.Declaration + "\n" + doc.Root;
+        }
+
+        public static string GenerateRemoveProducts(string[] productIds)
+        {
+            var remove = new XElement("Remove");
+            foreach (var id in productIds)
+            {
+                remove.Add(new XElement("Product", new XAttribute("ID", id)));
+            }
+
+            var configuration = new XElement("Configuration",
+                remove,
+                new XElement("Display",
+                    new XAttribute("Level", "Full"),
+                    new XAttribute("AcceptEULA", "TRUE")),
+                new XElement("Property",
+                    new XAttribute("Name", "FORCEAPPSHUTDOWN"),
+                    new XAttribute("Value", "TRUE")));
 
             var doc = new XDocument(new XDeclaration("1.0", "utf-8", null), configuration);
             return doc.Declaration + "\n" + doc.Root;