Release Breakcheck 2.0.0

[lovettsendit]

Breakcheck 2.0.0 expands deterministic behavioral verification for
dependency upgrades and behavior-preserving code changes.

Highlights:

• One-command offline demonstration
• Expanded static resolution and coverage diagnostics
• Reviewed fixtures and projections
• Baseline freeze, revision diff, and claim attestation
• Fail-closed AI-assisted development workflow
• Schema-versioned reports, evidence, provenance, and capabilities
• Trusted PyPI publishing workflow
• Structured issue and pull-request templates

Verification:

• 368 source tests passed
• Clean installed-wheel user acceptance passed
• Dependency changed and identical cases passed
• Preservation, refutation, and omitted-change AI cases passed
• Source and distribution privacy scans passed