feat: recall Claude Markdown memory read-only

[DottytheHomeless]

Summary

• add a bounded, read-only adapter for Claude Code project Markdown memory
• expose recall_claude_memory(query, limit?, project?) over MCP with provenance and an untrusted-evidence notice
• document routing between Claude working memory, mneme cross-project memory, and team/KOS memory

Safety

• never writes to Claude Markdown files
• does not mirror Markdown into SQLite
• public MCP schema exposes no arbitrary filesystem root/path

Verification

• node --test claude-markdown-memory.test.mjs claude-markdown-memory-mcp.test.mjs — 15/15 passed
• five DB-dependent legacy integration files rerun with isolated temp DBs — 179/179 assertions passed
• real Claude tree smoke test — 632-file inventory SHA-256 unchanged before/after recall
• node --check on both changed runtime modules
• npm audit --omit=dev — 0 vulnerabilities
• git diff --check — clean