Add omb version

lib/cli.bash

@@ -24,7 +24,26 @@ function _omb_cmd_update {
  echo 'Not yet implemented'
 }
 function _omb_cmd_version {
- echo 'Not yet implemented'
+ if ! _omb_util_command_exists git; then
+ echo "git not available to determine version"
+ return 1
+ fi
+
+ # Get the version name:
+ # 1) try tag-like version
+ # 2) try branch name
+ # 3) try name-rev (tag~<rev> or branch~<rev>)
+ local version
+ version=$(command git -C "$OSH" describe --tags HEAD 2>/dev/null) \
+ || version=$(command git -C "$OSH" symbolic-ref --quiet --short HEAD 2>/dev/null) \
+ || version=$(command git -C "$OSH" name-rev --no-undefined --name-only --exclude="remotes/*" HEAD 2>/dev/null) \
+ || version="<detached>"
+
+ # Get short hash for the current HEAD
+ local commit=$(command git -C "$OSH" rev-parse --short HEAD 2>/dev/null)
+
+ # Show version and commit hash
+ printf "%s (%s)\n" "$version" "$commit"
 }
 
 function omb {