add git cb

.gitconfig

@@ -11,6 +11,7 @@
 	autoSquash = true
 [alias]
 	publish = !git pull && git push
+	cb = !git-tmp-switch.sh
 [push]
 	default = current
 	autoSetupRemote = true

.local/bin/git-tmp-switch.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+set -euo pipefail
+
+if [ "$#" -lt 1 ]; then
+  echo "Usage: git cb <target-branch>"
+  exit 1
+fi
+
+TARGET_BRANCH="$1"
+
+if [ "$TARGET_BRANCH" != "-" ]; then
+  if ! git rev-parse --verify --quiet "$TARGET_BRANCH" >/dev/null; then
+    echo "Error: branch '$TARGET_BRANCH' does not exist." >&2
+    exit 1
+  fi
+fi
+
+git add -A
+if ! git diff --cached --quiet || [ -n "$(git ls-files --others --exclude-standard)" ]; then
+  git commit -m "tmp"
+fi
+
+git checkout "$TARGET_BRANCH"
+
+LATEST_AUTHOR=$(git log -1 --pretty=format:'%an')
+LATEST_MESSAGE=$(git log -1 --pretty=format:'%s')
+CURRENT_USER=$(git config user.name)
+if [ "$LATEST_AUTHOR" = "$CURRENT_USER" ] && [ "$LATEST_MESSAGE" = "tmp" ]; then
+  echo "Resetting last 'tmp' commit by $CURRENT_USER..."
+  git reset --mixed HEAD~1
+fi