feat(queue): add registerQueueCommand for mosaic queue CLI surface

Implements CU-05-03: adds queue list, stats, pause, resume, jobs tail,
and drain subcommands. Local adapter stubs unsupported ops with a clear
message. Wires into @mosaicstack/mosaic CLI via registerQueueCommand(program).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/mosaic/package.json

@@ -32,6 +32,7 @@
     "@mosaicstack/macp": "workspace:*",
     "@mosaicstack/prdy": "workspace:*",
     "@mosaicstack/quality-rails": "workspace:*",
+    "@mosaicstack/queue": "workspace:*",
     "@mosaicstack/types": "workspace:*",
     "@clack/prompts": "^0.9.1",
     "commander": "^13.0.0",