move startup orchestration from mind to event_loop

The top-level run() that creates Mind, wires channels, spawns the
Mind event loop, and starts the UI event loop is orchestration —
it belongs with the UI entry point, not in the cognitive layer.

Renamed to event_loop::start(cli). mind/mod.rs is now purely the
Mind struct: state machine, MindCommand, and the run loop.

Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>

src/user/event_loop.rs

@@ -18,6 +18,37 @@ use crate::user::ui_channel::{self, UiMessage};
 
 pub use crate::mind::MindCommand;
 
+/// Top-level entry point — creates Mind and UI, wires them together.
+pub async fn start(cli: crate::user::CliArgs) -> Result<()> {
+    let (config, _figment) = crate::config::load_session(&cli)?;
+
+    if config.app.debug {
+        unsafe { std::env::set_var("POC_DEBUG", "1") };
+    }
+
+    let (ui_tx, ui_rx) = ui_channel::channel();
+    let (turn_tx, turn_rx) = tokio::sync::mpsc::channel(1);
+    let (mind_tx, mind_rx) = tokio::sync::mpsc::unbounded_channel();
+
+    let mut mind = crate::mind::Mind::new(config, ui_tx.clone(), turn_tx);
+    mind.init().await;
+
+    let ui_agent = mind.agent.clone();
+    let shared_mind = mind.shared.clone();
+    let shared_context = mind.agent.lock().await.shared_context.clone();
+    let shared_active_tools = mind.agent.lock().await.active_tools.clone();
+    let turn_watch = mind.turn_watch();
+
+    tokio::spawn(async move {
+        mind.run(mind_rx, turn_rx).await;
+    });
+
+    run(
+        tui::App::new(String::new(), shared_context, shared_active_tools),
+        ui_agent, shared_mind, turn_watch, mind_tx, ui_tx, ui_rx,
+    ).await
+}
+
 fn send_help(ui_tx: &ui_channel::UiSender) {
     let commands = &[
         ("/quit",    "Exit consciousness"),