Refactor view modules for improved readability and consistency

- Updated markdown rendering logic to use more concise methods for obtaining vector lengths.
- Changed review status display to use the correct flag from settings.
- Cleaned up sidebar rendering code for better formatting and readability.
- Enhanced status bar rendering with improved string formatting and consistent style application.
- Refined workflow panel rendering, ensuring consistent style usage and improved readability.
- Added architecture overview and detailed documentation for backend, data, dependencies, and frontend structures.

src/app/subagent/engine.rs

@@ -632,7 +632,7 @@ pub fn run_subagent(ctx: &SubagentContext, tx: &mpsc::Sender<SubagentEvent>) ->
                                         shared_text.truncate(50_000);
                                         shared_text.push_str("\n...[truncated]");
                                     }
-                                    f.push(format!("[Auto-Shared] Sibling drone executed '{}' with args {}:\n{}", tool_name, args_json, shared_text));
+                                    f.push(format!("[Auto-Shared] Sibling drone executed '{tool_name}' with args {args_json}:\n{shared_text}"));
                                 }
                             }
                         }