- `[2026-07-04]` **A systemd `--user` daemon that shells out to `~/.cargo/bin`/`~/.local/bin` tools
  needs an explicit `Environment=PATH`** — the minimal `--user` default silently drops them. The
  althing herald lost `zellij` → silent `pane-miss` for ALL config-backed TUI/pane agents; CC + FIFO
  routes were unaffected, so it was invisible from a CC session. `reference_nh3_dev_althing_herald`.