* ci: run the merge checks on release branches too
All three `Policy` workflows filtered on `master`, so a pull request into `release/dsh-*`
got no `Master Change` and no `Pre-Merge Check`, and its review check only refreshed when
somebody submitted a review. The checks already take their base branch from the event, so
the filters now name the release branches as well.
* ci: limit the release branch filter to x.y.z
`release/dsh-*` also matched prerelease branches such as `release/dsh-0.1.2-alpha.4`;
the filter now spells the version digits, so only `release/dsh-x.y.z` counts.
* test(snapshot): carry the subagent identity section into the ptc-script-imports scenario
The runtime context gained a `subagent:identity` section and every session fixture but
this one was regenerated, so replay failed with a mismatch on the added section.
(cherry picked from commit c7a4119965cb26c69fd8fccbfd703c7d73351742)
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Co-authored-by: imccyu <[email protected]>
