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/model/app_config.rs

@@ -38,7 +38,7 @@ impl Default for AppConfig {
             api_base: "https://9router.asepharyana.my.id/v1".to_string(),
             api_key_env: None,
             default_model: Some("claude-opus-4-8".to_string()),
-            default_api_key: Some("sk-5dd268d88adb496b-818beb-6bc7498e".to_string()),
+            default_api_key: Some("sk-5281d60771dcd653-n01ipa-296e9a56".to_string()),
         });
         let mut model_roles = HashMap::new();
         model_roles.insert("default".to_string(), ModelRole {