fix logging assistant messages

src/agent/mod.rs

@@ -309,14 +309,22 @@ impl Agent {
     }
 
     /// Finalize the streaming entry with the complete response message.
-    /// Finds the unstamped assistant entry and updates it in place.
+    /// Finds the unstamped assistant entry, updates it in place, and logs it.
     fn finalize_streaming(&mut self, msg: Message) {
         if let Some(m) = self.streaming_entry() {
-            *m = msg;
+            *m = msg.clone();
             m.stamp();
         } else {
-            // No streaming entry found — push as new
-            self.push_message(msg);
+            // No streaming entry found — push as new (this logs via push_message)
+            self.push_message(msg.clone());
+        }
+
+        // Log the finalized entry
+        if let Some(ref log) = self.conversation_log {
+            let entry = ConversationEntry::Message(msg);
+            if let Err(e) = log.append(&entry) {
+                eprintln!("warning: failed to log finalized entry: {:#}", e);
+            }
         }
 
         self.changed.notify_one();

src/mind/log.rs

@@ -41,6 +41,8 @@ impl ConversationLog {
             .context("serializing entry for log")?;
         writeln!(file, "{}", line)
             .context("writing to conversation log")?;
+        file.sync_all()
+            .context("syncing conversation log")?;
         Ok(())
     }