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hipocampus-core

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3-tier agent memory system with 5-level compaction tree. OpenCode version. Defines session start protocol, end-of-task checkpoints, and memory file management. MUST be followed every session.

platforms/opencode/core/SKILL.md

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# Hipocampus — Agent Memory Protocol (OpenCode)

## Memory Architecture

```
Layer 1 (System Prompt — read at session start):
  MEMORY.md        ~50 lines   long-term memory (Core=frozen, Adaptive=compactable)
  USER.md          ~50 lines   user profile and preferences
  SCRATCHPAD.md    ~150 lines  active working state
  WORKING.md       ~100 lines  current tasks
  TASK-QUEUE.md    ~50 lines   task backlog
  memory/ROOT.md   ~100 lines  topic index of all memory (~3K tokens, via Compaction Root in MEMORY.md)

Layer 2 (On-Demand — read when needed):