make justfile better and cleanup zsh

Signed-off-by: cy <cy@cy7.sh>

home/zsh/default.nix

@@ -39,11 +39,6 @@
     initExtra = ''
       # disable control+s to pause terminal
       unsetopt FLOW_CONTROL
-      # manually integrate fzf cause we need to make sure zsh-vi-mode
-      # won't override C-r
-      function zvm_after_init() {
-        eval "$(${pkgs.fzf}/bin/fzf --zsh)"
-      }
 
       # useful emacs mode bindings
       bindkey -M viins "^E" end-of-line

justfile

@@ -1,9 +1,10 @@
 update:
+    git branch -D update || true
     git switch -c update
     nix flake update
     git add flake.lock
     git commit -s -m "flake update"
-    git push
+    git push -f
     git switch main
 
 upgrade: