GTR011 — Upgrade25_1: drop <trackster_conf> (25.1 → 26.0)

Contract: behaviour-preserving in the target era (dead-config removal).

The delta

26.0 removes the obsolete top-level <trackster_conf> element (the Trackster visualization config) from the schema.

The transform

Remove every <trackster_conf> element.

Proof

The element configures a subsystem that no longer exists in the Galaxy era the upgraded tool declares (profile="26.0"+): no 26.0-era code path consumes it, so removal is a runtime no-op there — and it is the only way to validate at 26.0. The pre-upgrade behaviour (Trackster on ancient Galaxies) is exactly what the opt-in upgrade contract trades away, surfaced via behavior_preserving.

History

Codemod §14; discovery-sweep grown.