Compare the mirrored href against the path-relative current location so the no-op guard actually skips unchanged URLs. Read context ids through get-query-param so repeated keys resolve to the last value. Cover the navigated effect with stubbed-globals tests (write on change, skip when mirrored, strip stale context) and surface enable-link-preview in the configuration flags list.
AI-assisted-by: muse-spark-1.3-contributor
Signed-off-by: Andrey Antukh <niwi@niwi.nz>