feat: implement Phase 3 Excellence (v1.0.0)

[MrBT-nano]

📝 Description

This PR marks the completion of the project roadmap, reaching the v1.0.0 Excellence milestone. It implements critical security hardening, observability, and production readiness features.

Key achievements:

• Security Hardening: Implemented a heuristic workflow scanner (Rust) and runtime SHA256 disk hash verification (Python) for models.
• Strict Format Enforcement: Only .safetensors models are allowed, effectively blocking Pickle-based attacks.
• Observability: Added standard gRPC Health Check services for Kubernetes integration.
• Traceability: Implemented structured JSON Audit Logging for all security decisions.
• Final Polish: Bumped version to 1.0.0 and updated ROADMAP.md.

🛠️ Type of Change

• 🚀 New feature (Production Milestone)

✅ Checklist

• Rust build (cargo build) passes
• Python security unit tests pass
• gRPC Health check verified
• STRUCTURE.tree updated

🏷️ Metadata

• Assignee: @MrBT-nano
• Labels: enhancement