fix: improve error handling in launch and command scripts

- Enhanced error handling in `lib/launch.sh` to log warnings when failing to open the editor or start the AI tool.
- Updated `lib/commands/clean.sh` to ensure the current branch retrieval does not fail the script execution.
- Improved user feedback in `lib/commands/editor.sh` by logging warnings when the file browser fails to open.
- Added local variables in `lib/commands/copy.sh` for better clarity and maintainability.

Author: helizaga

lib/commands/clean.sh

@@ -48,7 +48,7 @@ _clean_merged() {
     [ -d "$dir" ] || continue
 
     local branch
-    branch=$(current_branch "$dir")
+    branch=$(current_branch "$dir") || true
 
     if [ -z "$branch" ] || [ "$branch" = "(detached)" ]; then
       log_warn "Skipping $dir (detached HEAD)"

lib/commands/copy.sh

@@ -65,13 +65,15 @@ cmd_copy() {
       log_error "No worktrees found"
       exit 1
     fi
+    local _branch
     while IFS= read -r _branch; do
       [ -n "$_branch" ] && targets+=("$_branch")
     done <<< "$all_branches"
   fi
 
   # Process each target
   local copied_any=0
+  local target_id
   for target_id in "${targets[@]}"; do
     local dst_path dst_branch
     resolve_worktree "$target_id" "$repo_root" "$base_dir" "$prefix" || continue

lib/commands/editor.sh

@@ -29,8 +29,11 @@ cmd_editor() {
   worktree_path="$_ctx_worktree_path"
 
   if [ "$editor" = "none" ]; then
-    open_in_gui "$worktree_path"
-    log_info "Opened in file browser"
+    if ! open_in_gui "$worktree_path"; then
+      log_warn "Could not open file browser"
+    else
+      log_info "Opened in file browser"
+    fi
   else
     _open_editor "$editor" "$worktree_path" || exit 1
   fi

lib/launch.sh

@@ -30,7 +30,7 @@ _auto_launch_editor() {
   local editor
   editor=$(_cfg_editor_default)
   if [ "$editor" != "none" ]; then
-    _open_editor "$editor" "$worktree_path"
+    _open_editor "$editor" "$worktree_path" || log_warn "Failed to open editor"
   else
     if ! open_in_gui "$worktree_path"; then
       log_warn "Could not open file browser"
@@ -50,6 +50,6 @@ _auto_launch_ai() {
   else
     load_ai_adapter "$ai_tool" || return 1
     log_step "Starting $ai_tool..."
-    ai_start "$worktree_path"
+    ai_start "$worktree_path" || log_warn "Failed to start AI tool"
   fi
 }