memo 2.12.15

Fixed

• Add MCP descriptions for every core-profile tool so directory quality scanners and MCP clients receive useful tool metadata instead of empty descriptions.

Verification

• uv run --no-sync ruff check src/ tests/
• uv run --no-sync mypy src/memo
• uv run --no-sync pytest -m "not slow" -n auto --timeout=120 --cov=memo --cov-report=term-missing
• uv run --no-sync pytest -m "slow" --timeout=300 -v
• uv run --no-sync memo release check