fix(native): windows 0.61 API paths — repair the CI Windows compile

Four unresolved-import/type errors from the release build (first real compile):
- toast.rs: generic IMap moved to the windows-collections crate; read the reply
  from the ValueSet returned by UserInput() directly (HasKey/Lookup are exposed
  on the class).
- jumplist.rs: PROPVARIANT lives in Win32::System::Com::StructuredStorage (not
  windows::core); IObjectArray/IObjectCollection in Win32::System::Com (not
  UI::Shell); PKEY_Title in Win32::Storage::EnhancedStorage (feature added);
  build the title PROPVARIANT via From<&str> (VT_LPWSTR).
- smtc.rs: event registrations return a plain i64 token in windows 0.61 (the
  EventRegistrationToken newtype is gone).
- thumbbar.rs: HICON was imported inside the fn body but used in its signature —
  fully qualify the return type.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src-tauri/src/native/jumplist.rs

@@ -42,16 +42,17 @@ pub fn set_jump_list(app: AppHandle, items: Vec<JumpItem>) -> Result<(), String>
 
         use std::os::windows::ffi::OsStrExt;
         use windows::{
-            core::{w, Interface, HSTRING, PCWSTR, PROPVARIANT},
+            core::{w, Interface, PCWSTR},
             Win32::{
+                Storage::EnhancedStorage::PKEY_Title,
                 System::Com::{
-                    CoCreateInstance, CoInitializeEx, CoUninitialize, CLSCTX_INPROC_SERVER,
+                    CoCreateInstance, CoInitializeEx, CoUninitialize, IObjectArray,
+                    IObjectCollection, StructuredStorage::PROPVARIANT, CLSCTX_INPROC_SERVER,
                     COINIT_APARTMENTTHREADED,
                 },
                 UI::Shell::{
                     DestinationList, EnumerableObjectCollection, ICustomDestinationList,
-                    IObjectArray, IObjectCollection, IShellLinkW, ShellLink,
-                    PropertiesSystem::{IPropertyStore, PKEY_Title},
+                    IShellLinkW, PropertiesSystem::IPropertyStore, ShellLink,
                 },
             },
         };
@@ -109,7 +110,8 @@ pub fn set_jump_list(app: AppHandle, items: Vec<JumpItem>) -> Result<(), String>
                     // The visible label comes from System.Title on the link's
                     // property store (a bare IShellLink has no display name).
                     let store: IPropertyStore = link.cast()?;
-                    let title = PROPVARIANT::from(&HSTRING::from(item.title.as_str()));
+                    // From<&str> builds a VT_LPWSTR PROPVARIANT (what System.Title expects).
+                    let title = PROPVARIANT::from(item.title.as_str());
                     store.SetValue(&PKEY_Title, &title)?;
                     store.Commit()?;