## Why
The paused goal statusline currently points users at `/goal` to unpause
a goal, but bare `/goal` is the summary command and does not change the
goal state. Instead of making `/goal` mutate state only when a goal is
paused, this gives the action an explicit command that reads naturally
in the UI.
## What Changed
- Replace `/goal unpause` with `/goal resume` for reactivating a paused
goal.
- Update the paused goal statusline and `/goal` summary copy to point at
`/goal resume`.