conductor(plan): Mark task 'Refactor main.rs' as complete

conductor/tracks/owlen_evolution_20251226/plan.md

@@ -4,7 +4,7 @@
 - [x] Task: Create `Message` enum and Central Message Hub using `tokio::sync::mpsc` b0e65e4
     - Define the `Message` enum to handle UI events, Agent responses, and System notifications.
     - Create the channel infrastructure in `main.rs`.
-- [ ] Task: Refactor `main.rs` into UI and Engine Loops
+- [x] Task: Refactor `main.rs` into UI and Engine Loops 9648ddd
     - Separate the TUI rendering loop into its own async task or thread.
     - Create the Engine loop (Tokio task) to handle `Message` processing.
 - [ ] Task: Switch LLM interaction to Streaming-only