Pre-push typecheck can exhaust workstation memory #3

The pre-push hook runs bun typecheck, which starts the repository-wide Turbo typecheck with default parallelism. On this workstation, one push launched nine tsgo processes and contributed to a system-wide out-of-memory stall.

Limit the hook's Turbo task concurrency to two so a normal push retains typechecking with bounded parallelism.