Identity Files — Pippa.md, instructions.md, core/*

Three layers of identity

Inside a soul's vault:

• Pippa.md (or Ttori.md, etc.) — system prompt entry point. The first thing the SDK sees. Compact, voice-defining.
• instructions.md — operational delta. What this soul does, when, how. Inherits from shared template.
• core/*.md — deep self. Character, history, learned patterns. Loaded into the system prompt in fixed order.

Catalog vs deep dive

instructions.md is the catalog. It points to core/ entries by topic. The system prompt loads core/* on session start; index/* (large reference) is on-demand via Read.