Add workflow dependencies and fix attestation conflict

[MrTravisB]

Summary

Adds lint and test workflow dependencies to the publish workflow and fixes attestation generation conflict between TestPyPI and PyPI publishes.

Changes

• Added lint and test jobs that run before publishing
• Publish job now requires both lint and test to pass via needs: [lint, test]
• Disabled attestations for TestPyPI publish to prevent conflicts
• PyPI publish still generates attestations for production packages

Benefits

• Quality gates: Ensures code passes linting and tests before publishing
• Prevents bad releases: Won't publish packages that fail quality checks
• Fixes attestation error: Resolves "already have publish attestations" error
• Maintains security: Production PyPI packages still get attestations

Testing

The attestation conflict has been resolved by disabling attestations for the TestPyPI step while keeping them enabled for the production PyPI publish.

🤖 Generated with Claude Code