The `bottles` dict held `@contextmanager`-wrapped launch contexts.
On normal Python interpreter shutdown those context managers'
generators got GC'd, which raised GeneratorExit at the yield
point and ran the `finally` block — invoking each bottle's
teardown and tearing down the compose project. Net effect: `q`
WAS implicitly stopping every dashboard-launched bottle even
though the keypress handler just `return`'d.
`os._exit(0)` skips all Python-level cleanup (GC, atexit, etc.),
so the docker compose projects survive the dashboard exit
untouched. Curses gets explicit `endwin()` first because the
brutal exit skips curses.wrapper's normal terminal restoration.
Matches PRD 0020's resolved-question answer (`q` does NOT tear
down bottles; teardown is always explicit via `x` or
`./cli.py cleanup`).
didericis
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