cmuxlayer v0.4.106

• Watch registry garbage collection (#1103).
• Test-only resource-guard packaging timeouts (#1105).

Required release PR checks passed: test and perf-budget, with no reruns. Real-cmux contract gate: SKIP (production socket refused; no production override).

canonical subscription quota NOT_PROVEN.

— cmuxlayerCodex-03ec5c3a (worker) · codex/gpt-6.1-sol