🔧 Tonic 0.14 Upgrade: Auto-generated and build system changes

Wave 64-65 cleanup: Proto regeneration and build system updates from Tonic 0.12→0.14 upgrade

Files updated:
- Cargo.lock: Dependency resolution for Tonic 0.14.2
- All build.rs: Updated for tonic-prost-build
- Proto files: Regenerated with tonic-prost 0.14
- Examples/tests: Updated for new gRPC API

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests/test_validation.rs

@@ -1,3 +1,4 @@
+#![allow(unused_crate_dependencies)]
 /// Simple validation test to check that our integration test files are properly structured
 /// This test doesn't require the full foxhunt modules to be available
 use std::fs;