Refactor scrolling methods in ScrollState to accept an amount parameter

- Updated `scroll_up` and `scroll_down` methods to take an `amount` parameter for more flexible scrolling.
- Removed the `AgentMode` enum and related methods from the types module to simplify state management.
- Modified `AppStateRest` to remove the `mode` field and adjusted related logic.
- Enhanced `run_subagent` to build tool definitions and handle API key resolution from configuration.
- Updated command parsing to reflect changes in login handling.
- Removed onboarding overlays and related logic from input handling and rendering.
- Improved status bar to reflect connection status and agent readiness.
- Adjusted workflow panel rendering to simplify phase status display.
- Refactored edit log initialization to load from disk if available.
- Updated settings structure to use a HashMap for API keys.
- Enhanced error handling in LlmClient for authentication issues.

src/view/status.rs

@@ -6,38 +6,38 @@ use ratatui::Frame;
 use super::theme::Theme;
 
 pub fn draw_status_bar(frame: &mut Frame, area: Rect, state: &crate::app::state::rest::AppStateRest) {
-    let left_text = Span::styled(
-        " [zesdex] ",
+    // Connection status — reflects actual agent readiness:
+    //   PROG  → turn is in flight
+    //   READY → connected and ready
+    //   NOAPI → disconnected
+    let (agent_status, conn_color) = if state.turn_in_flight() {
+        ("PROG", Theme::MODE_YOLO)
+    } else if state.misc.api_connected {
+        ("READY", Theme::MODE_AUTO)
+    } else {
+        ("NOAPI", Theme::DIM)
+    };
+    let status = Span::styled(
+        format!(" {} ", agent_status),
         Style::default()
-            .fg(Theme::TEXT)
+            .fg(if agent_status == "NOAPI" { Theme::DIM } else { Theme::BG })
+            .bg(conn_color)
             .add_modifier(Modifier::BOLD),
     );
 
-    let agent_status = if state.turn_in_flight() {
-        "PROCESSING"
-    } else if state.misc.api_connected {
-        "READY"
-    } else {
-        "NO API"
-    };
-    let status_color = if state.misc.api_connected {
-        Theme::MODE_AUTO
-    } else if state.turn_in_flight() {
-        Theme::MODE_YOLO
-    } else {
-        Theme::DIM
-    };
-    let center_text = Span::styled(
-        format!(" | {} | {} ", state.settings.provider, agent_status),
-        Style::default().fg(status_color),
-    );
+    // Left chunk: [zesdex] STATUS
+    let mut spans = vec![
+        Span::styled(" [zesdex] ", Style::default().fg(Theme::TEXT).add_modifier(Modifier::BOLD)),
+        status,
+    ];
 
-    let right_text = Span::styled(
-        format!(" | {} ", state.settings.model),
+    // Right chunk: provider · model
+    spans.push(Span::styled(
+        format!(" {} · {} ", state.settings.provider, state.settings.model),
         Style::default().fg(Theme::DIM),
-    );
+    ));
 
-    let line = Line::from(vec![left_text, center_text, right_text]);
+    let line = Line::from(spans);
 
     let block = Block::default()
         .style(