v0.5.0: MCP Server, Major Simplification

What's New

MCP Server (ebk mcp-serve) — AI integration via Model Context Protocol with 3 tools:

• get_schema — introspect library database structure
• execute_sql — read-only SQL with 3-layer defense (regex, ?mode=ro, authorizer)
• update_books — batch update metadata, tags, authors, subjects, merge duplicates

What's Removed (~8,500 lines)

Module	Lines	Reason
ebk/ai/	~3,300	Replaced by MCP server
ebk/repl/	~2,300	Unused
ebk/vfs/	~2,800	Redundant with REST API
ebk/skills/	~180	Replaced by MCP server

Also removed: LLM config, ebk enrich command, VFS web router, stale references.

Install / Upgrade

pip install --upgrade ebk
# With MCP support:
pip install --upgrade ebk[mcp]

Full Changelog

v0.4.4...v0.5.0