Bump to 0.6.3

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Bump to 0.6.2

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Release v0.4.0 — inline embedding, oghma_add, cross-source dedup, rec…

…ency boost, smart session filtering

Semantic vector search + PyPI release

Add MCP server