Add usedforsecurity=False to hashlib.md5() calls in miner.py and
convo_miner.py to document that MD5 is used for deterministic ID
generation, not cryptographic security. Preserves stable drawer IDs
for backward compatibility with existing palaces.
Swapping to SHA-256 would change the ID formula and make existing
drawers unreachable on re-ingestion. PR #34 covers the MD5 sites
in knowledge_graph.py and mcp_server.py.
Verified: usedforsecurity kwarg is supported since Python 3.9
(project target per pyproject.toml line 10), confirmed via Context7
CPython docs.
Add Milla's conversational explanation of the palace architecture
(wings → rooms → closets → drawers → halls → tunnels) as an
introductory section before the technical diagram.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>