* fix(#978): parse --force in milestone complete dispatcher so the guard's documented override works
The dispatcher built `{ name, archivePhases }` but never parsed `--force`, so
`options.force` was always `undefined` and the guard inside `cmdMilestoneComplete`
(which tells users to "Re-run with --force to override") could never be bypassed.
Add `const force = args.includes('--force')` and pass it into the options object.
The guard already honors `options.force` — no changes to milestone.cts needed.
Closes#978
* chore(#978): backfill changeset pr number (982)
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