Refactor API integration and enhance command handling

- Removed unused modules and updated module paths for clarity.
- Added autocomplete functionality for command input in InputState.
- Updated AppStateRest to include a method for checking if a turn is in flight.
- Refactored subagent engine to use new API client structure.
- Changed default provider from "openrouter" to "zen" with updated API keys and models.
- Implemented tests for memory management and edit log functionalities.
- Enhanced error handling in API requests and improved response parsing.
- Updated UI components to reflect new API provider and status indicators.

src/view/status.rs

@@ -30,8 +30,13 @@ pub fn draw_status_bar(frame: &mut Frame, area: Rect, state: &crate::app::state:
             .add_modifier(Modifier::BOLD),
     );
 
+    let agent_status = if state.turn_in_flight() {
+        "PROCESSING"
+    } else {
+        "READY"
+    };
     let center_text = Span::styled(
-        format!(" | STATUS: {} | AGENT LOOP: LIVE ", mode_indicator),
+        format!(" | STATUS: {} | AGENT: {} ", mode_indicator, agent_status),
         Style::default().fg(mode_color),
     );