User-driven /model (and sessions.patch) overrides were dropped when a
session rolled over at the daily/idle reset boundary, reverting to the
configured default on the next turn despite the 'Model set to ... for
this session' ack. The override-preservation carryover in
initSessionState was gated on resetTriggered, so implicit stale
rollovers (the common case for always-on channel sessions) skipped it.
Run resolveResetPreservedSelection for any rollover that mints a new
session from an existing entry (explicit /new + /reset AND implicit
stale daily/idle). resolveResetPreservedSelection already preserves only
user-driven overrides and clears auto-fallback pins, so resets still
return to the default.
Adds regression tests in session.test.ts covering both cases.
Fixes#90119
Filed with AI assistance (OpenClaw agent); reviewed by @Peetiegonzalez.
Co-authored-by: Marvinthebored <marvinthebored@users.noreply.github.com>
8e81bf774e