Claude code - on hook install it removes all other hooks

[cr1st1p]

I temporarily modified install detection code to return 1 (see my previous bug report - improper install detection).
It installed, but on the way it:

• removed all other NON Notification and Stop hooks.
• and it added itself as the only Notification and Stop hook

Since logic is a bit more complicated for adding/removing the hooks, I recommend doing it maybe in adhoc python3 program.

[mylee04]

Thanks for the detailed repro. This was also a real bug and I've fixed it on main in aa1ea40.

What changed:

• enabling/disabling Claude notifications now preserves unrelated existing hooks instead of overwriting the whole hooks object
• code-notify only adds or removes the Claude Notification/Stop commands that it manages
• the same preservation logic is now covered on both Unix and Windows paths

I added regression tests for custom-hook preservation and will ship this in v1.7.3 next.