feat(runtime): green-ness contract

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

rust/crates/runtime/src/lib.rs

@@ -5,6 +5,7 @@ mod compact;
 mod config;
 mod conversation;
 mod file_ops;
+pub mod green_contract;
 mod hooks;
 mod json;
 pub mod lsp_client;