fix(#978): parse --force in milestone complete dispatcher so the guard's documented override works (#982)

* 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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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

scripts/lint-regression-test-names.allowlist.json

@@ -259,5 +259,6 @@
   "bug-941-managed-hooks-registry-manifest.test.cjs",
   "bug-947-hermes-gsd-prefix.test.cjs",
   "bug-948-state-noop-write-guard.test.cjs",
-  "bug-950-quick-summary-status-complete.test.cjs"
+  "bug-950-quick-summary-status-complete.test.cjs",
+  "bug-978-milestone-complete-force.test.cjs"
 ]

scripts/lint-test-file-count.allowlist.json

@@ -47,6 +47,7 @@
     "milestone": {
       "files": [
         "bug-730-milestone-phase-details-scope.test.cjs",
+        "bug-978-milestone-complete-force.test.cjs",
         "milestone-archive.test.cjs",
         "milestone-helper.test.cjs",
         "milestone-prefixed-convention.test.cjs",