Polygraph MCP gate

Version updated for https://github.com/polygraphso/litmus to version litmus-v0.22.0.

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What’s Changed

Minor release shipping two changes from a false-positive review of the harness:

  • #78 fix(c02) — the C-02 egress D rationale is now actionable: it names the undeclared host(s) and points authors at polygraph.egress, and the CLI itemizes them. Messaging only — every server’s letter grade is byte-identical.
  • #79 feat(sandbox) — pypi/uvx MCP servers are now gradeable under the Docker sandbox. They stage wheels-only into a venv (no target code runs during staging; fails closed on sdist), resolve offline, and launch with the venv python. Both the connect and C-02 egress paths support pypi; gVisor runtime parity preserved.

methodologyVersion is unchanged (litmus-v10) — a pypi server is graded by the same rubric as an npm one.