* fix: release pi review ports on session shutdown
* fix(pi): self-preempt stale sessions on fixed-port contention
A session abandoned without a decision keeps listening on the fixed
remote port in this long-lived process, so the next command's bind
fails (#1159). On a port-in-use or range-exhausted start failure,
stop every tracked browser session and retry once. Also: guard
closeAllConnections for older runtimes, downgrade the superseded
session notification from error to info, and cover the preemption
and stop-drain paths with tests.
* fix(pi): harden session preemption per independent review
Age-gate the preemption sweep so a concurrent command's fresh session
is never stopped, drop the session_shutdown sweep (sessions
deliberately outlive in-process session replacement so cross-session
feedback keeps working; process teardown frees ports anyway), make
server stop() and the sweep exception-safe, register archive sessions
in the registry, type the stopped error instead of matching prose,
handle a stopped plan review without a false startup error, keep the
tests from launching a real browser, and pin the call-site wrappings.
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Co-authored-by: Michael Ramos <mdramos8@gmail.com>
Syahrul