fix: remove global worktree path fallback

tests/claude-code/test-helpers.sh

@@ -9,14 +9,14 @@ run_claude() {
     local allowed_tools="${3:-}"
     local output_file=$(mktemp)
 
-    # Build command
-    local cmd="claude -p \"$prompt\""
+    # Build command as an argv array so timeout wraps claude directly.
+    local cmd=(claude -p "$prompt")
     if [ -n "$allowed_tools" ]; then
-        cmd="$cmd --allowed-tools=$allowed_tools"
+        cmd+=(--allowed-tools="$allowed_tools")
     fi
 
     # Run Claude in headless mode with timeout
-    if timeout "$timeout" bash -c "$cmd" > "$output_file" 2>&1; then
+    if timeout "$timeout" "${cmd[@]}" > "$output_file" 2>&1; then
         cat "$output_file"
         rm -f "$output_file"
         return 0