Bump version to 0.6.5 and enhance update download functionality

- Updated version number in __init__.py to 0.6.5.
- Modified the download_update method in updater.py to accept a progress_callback for tracking download progress.
- Implemented chunked downloading in _download_file to report progress via the callback.
- Adjusted installer launching logic in updater.py to handle MSI files correctly using msiexec.
- Connected download progress signal in main_window.py to update the downloading dialog.

src/webdrop_bridge/ui/main_window.py

@@ -1519,6 +1519,7 @@ class MainWindow(QMainWindow):
             # Connect signals
             worker.download_complete.connect(self._on_download_complete)
             worker.download_failed.connect(self._on_download_failed)
+            worker.download_progress.connect(self._on_download_progress)
             worker.update_status.connect(self._on_update_status)
             worker.finished.connect(thread.quit)
             worker.finished.connect(worker.deleteLater)
@@ -1620,6 +1621,16 @@ class MainWindow(QMainWindow):
             f"Could not download the update:\n\n{error}\n\nPlease try again later.",
         )
 
+    def _on_download_progress(self, downloaded: int, total: int) -> None:
+        """Forward download progress to the downloading dialog.
+
+        Args:
+            downloaded: Bytes downloaded so far
+            total: Total bytes (0 if unknown)
+        """
+        if hasattr(self, "downloading_dialog") and self.downloading_dialog:
+            self.downloading_dialog.set_progress(downloaded, total)
+
     def _do_install(self, installer_path: Path) -> None:
         """Execute the installer.
 
@@ -1718,6 +1729,7 @@ class UpdateDownloadWorker(QObject):
     # Define signals at class level
     download_complete = Signal(Path)  # Emits installer_path
     download_failed = Signal(str)  # Emits error message
+    download_progress = Signal(int, int)  # Emits (bytes_downloaded, total_bytes)
     update_status = Signal(str, str)  # Emits (status_text, emoji)
     finished = Signal()
 
@@ -1749,7 +1761,15 @@ class UpdateDownloadWorker(QObject):
                 # Download with 5 minute timeout (300 seconds)
                 logger.info("Starting download with 5-minute timeout")
                 installer_path = loop.run_until_complete(
-                    asyncio.wait_for(self.manager.download_update(self.release), timeout=300)
+                    asyncio.wait_for(
+                        self.manager.download_update(
+                            self.release,
+                            progress_callback=lambda cur, tot: self.download_progress.emit(
+                                cur, tot
+                            ),
+                        ),
+                        timeout=300,
+                    )
                 )
 
                 if not installer_path: