fix: ignore nix dev files

[gigamonster256]

removes and ignores nix dev files

 file .direnv/*
.direnv/flake-profile:         broken symbolic link to flake-profile-13-link
.direnv/flake-profile-10-link: broken symbolic link to /nix/store/bz0fxgpxhnhd5k6pl94yx5b0cnkihjfm-nix-shell-env
.direnv/flake-profile-11-link: broken symbolic link to /nix/store/vlm7h8szz6zk7pw4kbf6rx6wgzz2xkwp-nix-shell-env
.direnv/flake-profile-12-link: broken symbolic link to /nix/store/mnyy3zgc5kaij16qzkfkh7b228y6drg1-nix-shell-env
.direnv/flake-profile-13-link: broken symbolic link to /nix/store/kx2kx5d0fbjdrcmpw8aq3ldv8c1rr3v0-nix-shell-env
.direnv/flake-profile-1-link:  broken symbolic link to /nix/store/8n92g7fw4nix506iwq8nl1fb6ay2sdgc-nix-shell-env
.direnv/flake-profile-2-link:  broken symbolic link to /nix/store/q19smb3y056p32ziwy4kx7rxmma0m1v0-nix-shell-env
.direnv/flake-profile-3-link:  broken symbolic link to /nix/store/3z0dhrbjl6ixk8rnflizdxjsqp363dg4-nix-shell-env
.direnv/flake-profile-4-link:  broken symbolic link to /nix/store/9virk8id889lkdr93d5sv03wywybxcrq-nix-shell-env
.direnv/flake-profile-5-link:  broken symbolic link to /nix/store/lzbfvrsqj2q22h2b99dcicbhcxcy9bqy-nix-shell-env
.direnv/flake-profile-6-link:  broken symbolic link to /nix/store/m12racr5hxc041wzs28iivg142fb91qf-nix-shell-env
.direnv/flake-profile-7-link:  broken symbolic link to /nix/store/6znavhsxp7n9x5a6fmjy3mnzjwbpzsw0-nix-shell-env
.direnv/flake-profile-8-link:  broken symbolic link to /nix/store/mzhw4r4fwncli7rz89h5lfa6fnx2dnlx-nix-shell-env
.direnv/flake-profile-9-link:  broken symbolic link to /nix/store/smfaqmssbm1y8qi1iwb6s4a70247j3qg-nix-shell-env

[Copilot]

Pull request overview

Adds .gitignore entries for Nix development artifacts (result, result-*, .direnv) so they aren't tracked.

Changes:

• Append a # nix caches/outputs section to .gitignore.

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