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/controller/command.rs

@@ -57,7 +57,7 @@ pub fn parse_command(text: &str) -> Command {
         "/lesson" if arg1 == "reject" && !arg2.is_empty() => Command::LessonReject(arg2.to_string()),
         "/lesson" if !arg1.is_empty() => Command::LessonCreate(arg1.to_string()),
         "/lesson" => Command::LessonList,
-        "/login" if arg1.is_empty() => Command::LessonList,
+        "/login" if arg1.is_empty() => Command::Login { provider: String::new() },
         "/login" if !arg1.is_empty() => Command::Login { provider: arg1.to_string() },
         "/edit" if !arg1.is_empty() => Command::Edit(arg1.to_string()),
         "/edit" => Command::Edit(".".to_string()),