fix(#2644): deduplicate Cursor slash menu (#2812)

* fix(#2644): deduplicate Cursor slash menu

* fix: preserve installer executable mode

* chore: add changeset for PR #2812

* test(#2644): acknowledge Cursor emission changes

* test(#2644): drop spent emitted drift acknowledgments

* fix(#2644): remove retired Cursor command converter

---------

Co-authored-by: clezcoding <clezcoding@users.noreply.github.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>

docs/INVENTORY-MANIFEST.json

@@ -422,6 +422,7 @@
       "research-provider.cjs",
       "research-store.cjs",
       "resolution.cjs",
+      "retired-artifact-cleanup.cjs",
       "review-lane-descriptor.cjs",
       "review-lane-invocation.cjs",
       "review-lane-runner.cjs",