Optimize repository loading and enhance Git UI

Consolidate multiple Git backend calls into a single bundle to reduce
overhead when opening and auto-refreshing repositories. This significantly
improves performance by fetching status, branches, commits, and files
in one optimized operation, instead of re-running 'git rev-parse' and
'git status' multiple times.

Also, streamline commit history loading by fetching file changes inline
via 'git log --name-status -z', eliminating expensive per-commit
'git diff-tree' processes.

Additionally, introduce the ability to create new branches from a
specific commit in the history and refactor the commit comparison
feature into a dedicated dialog. The status panel now displays concise
file names.

src-tauri/src/main.rs

@@ -6,7 +6,8 @@ use git::{
     cancel_code_search, checkout_branch, commit, compare_commits, compare_file_to_head,
     compare_file_to_parent, create_branch, cred_delete, cred_load, cred_save,
     diff_file_against_working_tree, get_remote_url, get_status, list_branches, list_commits,
-    list_file_history, list_repository_files, merge_branch, open_repository, pull, push,
+    list_file_history, list_repository_files, merge_branch, open_repository,
+    open_repository_bundle, pull, push,
     read_conflict, resolve_conflict, resolve_conflict_side, restore_file_from_commit,
     restore_files, restore_to_commit, search_code_introductions, stage_files, unstage_files,
     SearchCancellationState,
@@ -34,6 +35,7 @@ fn main() {
             restore_file_from_commit,
             merge_branch,
             list_repository_files,
+            open_repository_bundle,
             list_file_history,
             compare_commits,
             compare_file_to_head,