v1.3.0: Expanded study content from PCIP training modules

What's new

Multiple-choice questions (257 total, +56 new)

• New questions sourced from actual PCIP training module content covering 3DS components, SSF structure, P2PE requirements, PTS PIN Security, SAQ types, Magecart, compensating controls, and per-requirement nuances across all 12 DSS requirements
• Existing questions reviewed for accuracy against training materials

Flashcards (214 total, fully restructured)

• Every answer now under 20 words for rapid-fire self-testing
• One fact per card throughout — multi-part questions split into individual recall cards
• Format converted from "explain" style to "true or false," "how many," and acronym recall
• ~140 new cards covering the same topic gaps as the MC questions

Removed

• PCIP credential/exam logistics questions (test venue, question count, time limit, CPE requirements, Code of Professional Responsibility) — not testable exam content