* feat: improve context compaction handoff summaries
Adapt PR #916 onto current main by replacing the old context summary marker
with a clearer handoff wrapper, updating the summarization prompt for
resume-oriented summaries, and preserving the current call_llm-based
compression path.
* fix: clearer error when docker backend is unavailable
* fix: preserve docker discovery in backend preflight
Follow up on salvaged PR #940 by reusing find_docker() during the new
availability check so non-PATH Docker Desktop installs still work. Add
a regression test covering the resolved executable path.
* test: make gateway async tests xdist-safe
Replace sync test usage of asyncio.get_event_loop().run_until_complete()
with asyncio.run() so tests do not depend on an ambient current event loop.
Also create the email disconnect poll task inside a running loop. This fixes
xdist/CI failures where workers have no current loop in MainThread.
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Co-authored-by: aydnOktay <xaydinoktay@gmail.com>
b91cac7b4b