v0.2.2 - Public release prep and tenant-neutral docs

Current status: stable and release-ready.\n\nHighlights:\n- Removed tenant-specific/BOKU references from tracked files\n- Kept repository generic; moved tenant specifics to external config pattern\n- Added agent-friendly installation guidance in README (GitHub URL -> setup -> verify)\n- Added tenant config templates under docs/tenant-template\n- Neutralized tests and verified full suite\n\nValidation:\n- pytest: 19 passed\n\nNote:\n- No secrets are included in the repository. Configure credentials via local .env.

v0.2.1

• Add optional self-learning skill snippet updates (keyword-based)\n- Expand mail safety guard for all message move operations\n- Add BOKU GroupWise-specific snippet guidance (prefer copy to Trash)\n- Update docs, env example, changelog, and tests