v2.16.0

Added

run_e2e.py gains a deep-preflight subcommand (issue #956), replacing the inline bash re-implementation of the harness’s own auth logic that previously lived in e2e.yml’s weekly credential-check job. Calls directly into _clone_auth_env/_github_reviewer_token/PLATFORMS instead of duplicating them, so this check can no longer silently drift from what a real run actually does, and the logic is unit-tested alongside the rest of the module.

opened.json entries are now matched by (platform, number), not platform name alone (issue #958). A stale entry left behind by a prior run reusing the same --out-dir could previously be marked resolved by mistake, telling cleanup to skip a PR that was never actually closed.
Orphan-branch cleanup failures are now recorded durably, not just logged (issue #957): each failure is appended as a JSON line to tests/e2e/.runs/orphan-branches.jsonl, so accumulation from a repeatedly-failing token or transient API issue is visible to tooling instead of only appearing in a job log.
Added unit test coverage for _run_one_platform’s opened.json resolution control flow (issue #959): the pass/verdict-failure/unexpected-exception/SystemExit/cleanup-failure-after-pass exit paths added in v2.15.0 previously had no direct test, only the standalone helper functions did.

See CHANGELOG.md for full technical detail.