v0.7.0 — first PyPI release (manna-mcp)

First release from the NSF-Simons CosmicAI Institute org, and the first published to PyPI as manna-mcp (pip install manna-mcp; the import package and CLI remain manna). Also: real distribution metadata, lean sdist, and a Trusted Publishing (OIDC) release pipeline — no stored tokens.

What's Changed

• build: PyPI packaging — metadata, lean sdist, Trusted Publishing release job by @dangause in #1
• chore: bump version to 0.7.0 (first PyPI release) by @dangause in #2
• release: promote dev to main — v0.7.0, first PyPI release (manna-mcp) by @dangause in #3

New Contributors

• @dangause made their first contribution in #1

Full Changelog: v0.6.2...v0.7.0