Merge upstream b1f003e186 while preserving PM runtime ownership and
Python 3.14 worker startup, Windows signing, and macOS wait recovery.
Keep retired runtime modules deleted. Port upstream updater preflight
checks into the checkout strategy and preserve live build logging.
Carry checkpoint filename handling and process recovery into the current
module layout. Regenerate locks and adapt incoming platform test markers.
Focused Python and JavaScript tests, desktop and root-test typechecks,
conflict-path lint checks, lock validation, and retired-import checks pass.
The full test suite and packaged release builds were not run.
Port the exact submitted-wire-text ownership boundary from #93546 onto
current topical runtime code. Do not add the candidate's mocked-result
fallback or storage-level content deduplication. Preserve later distinct
and identical user events, separate identical accepted turns, and keyless
inputs. Add two regression invariants and offline subprocess-wire A/B.
Local wire A/B: 4/8 control matrix passing on base, 8/8 after.
Broader tests queued behind campaign lock; not ready for merge.
Refs #104653
Original diagnosis: @gitszabolcs (#38254)
Original implementation: #43127, submitted by @vashkartik
Focused salvage and wire-text correction: @fancyboi999 (#93546)
Current-main carry-forward considered: #104698
Co-authored-by: Xinmin Zeng <135568692+fancyboi999@users.noreply.github.com>
Co-authored-by: VECTOR <vector.hq@outlook.com>
