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/dto/provider/request.rs

@@ -8,7 +8,6 @@
 //! for reserved words like `type`) so no manual (de)serialization glue is
 //! needed; optional fields use `skip_serializing_if` so unset knobs are
 //! omitted rather than sent as `null`, matching provider expectations.
-
 use serde::{Deserialize, Serialize};
 use serde_json::Value;