fix: make final4 pick counting tolerant to id drift

[mateu]

What

Make count_final4_picks resilient when final-four game IDs drift from historical numbering.

Why

A full-suite run exposed a regression: if topology/round assignments shift, ID-only matching can undercount valid final-four picks even though the games are semis/championship by round.

How

Use a joined game query that always accepts round-based final-four picks (round >= 5) and, when available, also accepts structure-derived final-four game IDs.

Testing

• script/test-env.sh prove -lv t/model_round_based_final4_counts.t
• script/test-env.sh prove -lr t

---

Quality Report

Changes: 1 file changed, 16 insertions(+), 11 deletions(-)

Code scan: clean

Tests: skipped

Branch hygiene: clean

Generated by Kōan post-mission quality pipeline

[Copilot]

Pull request overview

Improves Final Four pick counting in Bracket::Model::DBIC so it remains correct even when Final Four game IDs drift due to bracket topology/round assignment changes.

Changes:

• Updates count_final4_picks to count Final Four picks by game.round >= 5.
• When structure-derived Final Four game IDs are available, counts picks that match either the derived IDs or round >= 5 (union), preventing undercounts.