Implement repository management view and multi-repo tabs

Introduces a new "Repository Management" view for browsing open and recent repositories. Adds a tabbed interface for quickly switching between multiple active repositories, with persistent state. Also includes a new command to open the current repository in the native file explorer.

src-tauri/src/git.rs

@@ -208,6 +208,12 @@ pub fn open_repository(path: String) -> Result<GitStatus, String> {
     status_for_repo(&repo)
 }
 
+#[tauri::command]
+pub fn open_repo_in_explorer(path: String) -> Result<(), String> {
+    let repo = resolve_repo(&path)?;
+    open_path_in_file_manager(&repo)
+}
+
 #[derive(Debug, Clone, Serialize)]
 pub struct RepositoryBundle {
     pub status: GitStatus,
@@ -1314,6 +1320,36 @@ fn resolve_repo(path: &str) -> Result<PathBuf, String> {
     Ok(PathBuf::from(top_level))
 }
 
+#[cfg(windows)]
+fn open_path_in_file_manager(path: &Path) -> Result<(), String> {
+    let native_path = path.to_string_lossy().replace('/', "\\");
+    let mut command = Command::new("explorer.exe");
+    command.arg(native_path);
+    command.creation_flags(CREATE_NO_WINDOW);
+    command
+        .spawn()
+        .map_err(|err| format!("Explorer konnte nicht gestartet werden: {err}"))?;
+    Ok(())
+}
+
+#[cfg(target_os = "macos")]
+fn open_path_in_file_manager(path: &Path) -> Result<(), String> {
+    Command::new("open")
+        .arg(path)
+        .spawn()
+        .map_err(|err| format!("Finder konnte nicht gestartet werden: {err}"))?;
+    Ok(())
+}
+
+#[cfg(all(unix, not(target_os = "macos")))]
+fn open_path_in_file_manager(path: &Path) -> Result<(), String> {
+    Command::new("xdg-open")
+        .arg(path)
+        .spawn()
+        .map_err(|err| format!("Dateimanager konnte nicht gestartet werden: {err}"))?;
+    Ok(())
+}
+
 fn verify_commit(repo: &Path, commit: &str) -> Result<String, String> {
     let commit = commit.trim();
     if commit.is_empty() {

src-tauri/src/main.rs

@@ -6,10 +6,10 @@ use git::{
     apply_file_patch, 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_file_patch, get_remote_url, get_status, list_branches,
-    list_commits, 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,
+    list_commits, list_file_history, list_repository_files, merge_branch, open_repo_in_explorer,
+    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,
 };
 
 fn main() {
@@ -19,6 +19,7 @@ fn main() {
         .plugin(tauri_plugin_dialog::init())
         .invoke_handler(tauri::generate_handler![
             open_repository,
+            open_repo_in_explorer,
             get_status,
             list_branches,
             checkout_branch,