chore(oracle): move 'test fixture' to inline comment (governance grep is line-by-line)

Author: hyperpolymath

src/oracle/src/lib.rs

@@ -729,8 +729,7 @@ mod tests {
             action_type: ActionType::CreateFile {
                 path: "config.rs".to_string(),
             },
-            // example test fixture: string the oracle should reject as a hardcoded secret
-            content: r#"let password = "supersecretpassword123""#.to_string(),
+            content: r#"let password = "supersecretpassword123""#.to_string(), // test fixture
             files_affected: vec!["config.rs".to_string()],
             llm_confidence: 0.9,
         };
@@ -1049,8 +1048,7 @@ mod tests {
             action_type: ActionType::CreateFile {
                 path: "config.rs".to_string(),
             },
-            // example test fixture: string the oracle should reject as a hardcoded API key
-            content: r#"const API_KEY = "abcdef1234567890abcdef""#.to_string(),
+            content: r#"const API_KEY = "abcdef1234567890abcdef""#.to_string(), // test fixture
             files_affected: vec!["config.rs".to_string()],
             llm_confidence: 0.9,
         };