Add automatic memory integration so EJClaw host directly calls Memento
MCP for recall at session start and reflect on compact, removing
reliance on agent voluntary tool use.
Stage 1: New sessions get room memory briefing injected into system
prompt (CLAUDE.md / AGENTS.md) via host-side MCP client.
Stage 2: PreCompact hook automatically calls reflect + remember to
persist session summaries as room-memory fragments.
Also restores missing source files (token-rotation, codex-token-rotation,
claude-usage exports) to fix full build from source.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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