The CS2 Major EV simulation silently discarded the Champions Stage
bracket for IEM Cologne 2026: the bracket seeded "Team Spirit" in QF1
while the stage assignments listed the (different) "Spirit Academy", so
the realBracket gate found an out-of-field participant and rejected the
whole bracket. The phantom "Spirit Academy" also left a stray
event_results row (33 rows for 32 teams).
The existing "Reset all" button only cleared cs2_major_stage_results, so
re-entering couldn't remove the phantom result or its cached QP total.
Add resetCs2Event, which also deletes the event's event_results and
recomputes the affected participants' cached QP totals — all inside a
single transaction so a mid-operation failure can't leave the event in a
torn state. It deliberately preserves the Champions Stage bracket so
re-entry realigns the stage data to it. The reset button now confirms
and states that results/QP are cleared too.
Tests: resetCs2Event clear+recompute behavior, and a simulator
regression pinning that one out-of-field QF participant disables the
whole bracket.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
