feat(tauri): update Windows taskbar badge with combined count

The Windows overlay badge now renders a single combined number and
includes an additional “changes” component in the total. This makes
the badge more informative while keeping the icon compact and
legible across small sizes.

- Simplify badge rendering to one circle with centered text
- Extend the Tauri command and frontend call to pass changes count

src-tauri/src/main.rs

@@ -7,14 +7,13 @@ use badge::set_sync_badge;
 use git::{
     SearchCancellationState, apply_file_patch, cancel_code_search, cancel_file_history,
     checkout_branch, commit, commit_ai_generate, commit_ai_load, commit_ai_local_models,
-    commit_ai_status, compare_commits, compare_file_to_head, compare_file_to_parent,
-    create_branch, cred_delete, cred_load, cred_save, delete_branch,
-    diff_file_against_working_tree, get_file_patch, get_remote_url, get_status, list_branches,
-    list_commits, list_file_history, list_repository_files, merge_branch, open_repo_in_explorer,
-    fetch, open_repository, open_repository_bundle, open_repository_file, pull, push,
-    read_conflict, rename_branch, resolve_conflict, resolve_conflict_side,
-    restore_file_from_commit, restore_files, restore_to_commit, search_code_introductions,
-    stage_files, unstage_files,
+    commit_ai_status, compare_commits, compare_file_to_head, compare_file_to_parent, create_branch,
+    cred_delete, cred_load, cred_save, delete_branch, diff_file_against_working_tree, fetch,
+    get_file_patch, get_remote_url, get_status, list_branches, list_commits, list_file_history,
+    list_repository_files, merge_branch, open_repo_in_explorer, open_repository,
+    open_repository_bundle, open_repository_file, pull, push, read_conflict, rename_branch,
+    resolve_conflict, resolve_conflict_side, restore_file_from_commit, restore_files,
+    restore_to_commit, search_code_introductions, stage_files, unstage_files,
 };
 
 fn main() {