Original exit tie predicate and mode classifier

RE-834. Reproduce with python3 scripts/analyze_qvm_exit_predicate.py; focused validation: cargo xtask test-group exit-predicate. Machine report.

Actual 7662 and child 33715 execute across 168 cases. Playing count and the enabled global gate ties; team-classified modes compare global scores, mode9 uses ranked field308, mode11 field696, and other modes field248. Raw numeric names remain conservative; ranked pointer legality and native execution remain open.

Original executable/native runtime and complete Linux/macOS Rust/Bevy/Solari acceptance remain unverified.