bluetemberg: Hook for Claude Code

{
  "PreToolUse": [
    {
      "matcher": "EnterWorktree",
      "hooks": [
        {
          "type": "command",
          "command": "bash -c 'v=$(jq -rs --arg f \"$1\" '\\''if length == 1 then .[0] else error(\"expected one JSON payload\") end | ($f / \".\") as $p | .tool_input | if type == \"object\" then . else error(\"tool_input is not an object\") end | getpath($p) | if . == null then empty else . end | if type == \"array\" or type == \"object\" then error(\"not a string, number or boolean\") else . end'\\'' 2>/dev/null); if [ \"$?\" -ne 0 ]; then printf \"bluetemberg guardrail: could not read field .%s from the hook payload (is jq installed? It must be one JSON object with an object tool_input, and the field a string, number or boolean), so the condition cannot be evaluated. Blocking.\\n\" \"$1\" >&2; exit 2; fi; fail=; bad=; if [ -n \"$5\" ] && [ -z \"$v\" ]; then fail=1; fi; if [ -n \"$2\" ]; then [[ \"$v\" =~ $2 ]]; s=$?; if [ \"$s\" -eq 2 ]; then bad=1; elif [ \"$s\" -eq 0 ]; then fail=1; fi; fi; if [ -n \"$3\" ]; then [[ \"$v\" =~ $3 ]]; s=$?; if [ \"$s\" -eq 2 ]; then bad=1; elif [ \"$s\" -ne 0 ]; then fail=1; fi; fi; if [ -n \"$bad\" ]; then printf \"bluetemberg guardrail: the condition regex for field .%s is not valid POSIX ERE, so the condition cannot be evaluated. Blocking; fix the guardrail regex.\\n\" \"$1\" >&2; exit 2; fi; if [ -n \"$fail\" ]; then printf \"%s\\n\" \"$4\" >&2; exit 2; fi' bluetemberg 'name' '^claude/' '' 'EnterWorktree requires a conventional branch name. Call EnterWorktree again with name=\"type/description\" (e.g. feat/my-feature). Ask the user what the branch should be called if unclear. Types: feat fix chore refactor docs test' '1'"
        }
      ]
    },
    {
      "hooks": [
        {
          "type": "command",
          "command": "bash -c 'name=$(cat | jq -r \".name // empty\" 2>/dev/null); if [[ -z \"$name\" || \"$name\" == claude/* ]]; then echo \"EnterWorktree requires a conventional branch name. Call EnterWor