fix(mcp): propagate internal serialization errors instead of silently swallowing them to prevent LLM hallucination

server/src/tools.rs

@@ -612,16 +612,28 @@ mod tests {
     fn test_schema_extraction_includes_descriptions() {
         let schema = schema_for!(SetAcceptanceCriteriaTool);
         let schema_json = serde_json::to_value(&schema).unwrap();
-        
-        let desc = schema_json.get("description").and_then(|d| d.as_str()).unwrap_or("");
-        assert!(desc.contains("Define a strict checklist of acceptance criteria"), "Schema should include struct docstring as description");
-        
+
+        let desc = schema_json
+            .get("description")
+            .and_then(|d| d.as_str())
+            .unwrap_or("");
+        assert!(
+            desc.contains("Define a strict checklist of acceptance criteria"),
+            "Schema should include struct docstring as description"
+        );
+
         let schema2 = schema_for!(LogCodeChangeTool);
         let schema2_json = serde_json::to_value(&schema2).unwrap();
         let props = schema2_json.get("properties").expect("Missing properties");
-        
+
         let file_path_prop = props.get("file_path").expect("Missing file_path property");
-        let field_desc = file_path_prop.get("description").and_then(|d| d.as_str()).unwrap_or("");
-        assert!(field_desc.contains("The path of the file that was changed"), "Schema should include field docstring as description");
+        let field_desc = file_path_prop
+            .get("description")
+            .and_then(|d| d.as_str())
+            .unwrap_or("");
+        assert!(
+            field_desc.contains("The path of the file that was changed"),
+            "Schema should include field docstring as description"
+        );
     }
 }