Expand real-data validation: SPARC 20+, ITPA 100+, JET DT

[anulum]

Goal

Expand the real-data validation suite to cover more machines and scenarios.

Targets

Dataset	Current	Goal
SPARC GEQDSK equilibria	8 shots (MIT/CFS)	20+
ITPA confinement entries	53 / 24 machines	100+ / 30+ machines
DIII-D disruption shots	16 reconstructed profiles	Raw MDSplus ingestion
JET DT campaign	0	5+ shots

Blockers

• SPARC: pending CFS data release
• DIII-D: pending GA MDSplus access
• JET DT: pending EUROfusion access

Acceptance criteria

• Real-data strict gate passes on new datasets
• tools/real_data_roadmap_progress.py shows targets met
• Non-regression guard baseline updated

Roadmap: v4.0