pub fn execute_tool(name: &str, arguments: &Value) -> Result<Value, String>Expand description
Execute one fake tool in memory. Deterministic per (tool, arguments); never touches the filesystem, terminal, or network.
read_fixture→{"status":"success","fixture_id":...,"source":...};run_fixture_test→{"status":"fail","fixture_id":...,"output":...}(a CONTROLLED failure report - the execution succeeds, the report says the fixture’s test failed);write_fixture_patch→{"status":"success","applied":true,...}.