refactor: use idiomatic home-manager options for git user and mise activation

home/dev/git.nix

@@ -3,12 +3,10 @@
 {
   programs.git = {
     enable = true;
+    userName = "imbytecat";
+    userEmail = "imbytecat@gmail.com";
     signing.format = null;
     settings = {
-      user = {
-        name = "imbytecat";
-        email = "imbytecat@gmail.com";
-      };
       merge.conflictstyle = "zdiff3";
       pull.rebase = true;
       push.autoSetupRemote = true;

home/shell/fish.nix

@@ -42,9 +42,6 @@ in
       # PATH
       fish_add_path $HOME/go/bin $HOME/.bun/bin
 
-      # mise
-      mise activate fish | source
-
       # Sudo: double Escape to prepend sudo
       bind \e\e 'fish_commandline_prepend sudo'