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

server/src/mcp.rs

@@ -23,8 +23,9 @@ pub fn error(id: serde_json::Value, code: i32, message: &str) -> serde_json::Val
 pub fn tool_def<T: JsonSchema>(name: &str, fallback_desc: &str) -> serde_json::Value {
     let schema = schemars::schema_for!(T);
     let schema_val = serde_json::to_value(&schema).unwrap_or_default();
-    
-    let desc = schema_val.get("description")
+
+    let desc = schema_val
+        .get("description")
         .and_then(|d| d.as_str())
         .unwrap_or(fallback_desc)
         .to_string();